Journal articles on the topic 'Ceramic'
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Scolaro, Juliano Milczewsky, Jefferson Ricardo Pereira, Accácio Lins do Valle, Gerson Bonfante, and Luiz Fernando Pegoraro. "Comparative study of ceramic-to-metal bonding." Brazilian Dental Journal 18, no. 3 (2007): 240–43. http://dx.doi.org/10.1590/s0103-64402007000300012.
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Dentists and technicians have used dental ceramics associated with different types of alloys without taking into account the characteristics of compatibility of these materials. Knowing the properties of the alloy and ceramic used in metal/ceramic restorations is a key factor for treatment success. The purpose of this study was to evaluate the bond strength of a palladium-silver alloy (Pors-on 4) to 3 ceramics (Ceramco, Noritake and Vita VMK-68) using shear forces at the metal-ceramic interface. A stainless steel cylindrical matrix was used for preparation of the metal dies, application of ceramic and shear strength testing. Thirty palladium-silver alloy cylinders received two layers of opaque and two layers of body porcelain, and shear tests were performed in a universal testing machine at a cross-head speed of 0.5 mm/min. Shear bond strength means (in MPa) were: 28.21(Ceramco), 28.96 (Noritake) and 24.11 (Vita VMK-68). One-way ANOVA did not show statistically significant differences (p>0.05) among the materials. The results of this study indicate that the three evaluated ceramic systems are suitable to be used in combination with the tested palladium-silver alloy.
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Colomban, Ph. "Gel technology in ceramics, glass-ceramics and ceramic-ceramic composites." Ceramics International 15, no. 1 (January 1989): 23–50. http://dx.doi.org/10.1016/0272-8842(89)90005-9.
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Lv, Xiang, Xinyu Liu, and Jiagang Wu. "Decoding the correlation between initial polarity and strain property of BNT-based ceramics." Journal of Applied Physics 132, no. 16 (October 28, 2022): 164101. http://dx.doi.org/10.1063/5.0121941.
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Although a large electric-induced strain has been obtained in sodium bismuth titanate (Bi0.5Na0.5TiO3, BNT)-based ceramics using chemical modifications, the effect of initial BNT-based ceramic's polarity on modulating strain properties was rarely reported. Herein, we comparatively studied the effect of tantalum (Ta) doping on two BNT-based ceramics with different ferroelectric polarities, namely, (Bi0.5Na0.5)0.935Ba0.065TiO3–0.7%Bi2FeCrO6 and (Bi0.98Gd0.02)0.5Na0.5TiO3. The former locates at the morphotropic phase boundary (MPB), whereas the latter is close to pristine BNT ceramics. An effective critical point, located at the crossover between ferroelectric and relaxor, is constructed in the former ceramic and significantly enhances strain properties, whereas a useless one is found in the latter ceramic due to the retention of a non-ergodic relaxor and has merely limited ability to promote strain properties. Our results demonstrate that the ferroelectric polarity of the initial BNT-based ceramic matrix also plays an important role in pursuing high strain properties.
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Cheng, Zhao Gang, Xin Hua Ni, and Xie Quan Liu. "The Mechanical-Stress-Field of Matrix in Eutectic Ceramic Composite." Applied Mechanics and Materials 121-126 (October 2011): 3607–11. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.3607.
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Based on the interaction between nano-fiber and eutectic interphase, forth-phase mode is used to get the mechanical stress field of matrix in eutectic composite ceramics. The effective flexibility increment tensor of eutectic ceramic composite is obtained by the volumetric average strain. The remote stress boundary condition of the eutectic composite ceramis is accounted for getting the mechanical stress field in matrix. The results show the mechanical stress field of the matrix is associated with the stiffness and the volume fractions of each component in eutectic composite ceramic , the shape of interphase and nano-fiber. The stresses in matrix will decrease due to the strong constraining effects of the eutectic interphase. The eutectic interphase make the eutectic composite ceramics strengthen.
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Aronov, V., and T. Mesyef. "Wear in Ceramic/Ceramic and Ceramic/Metal Reciprocating Sliding Contact. Part 1." Journal of Tribology 108, no. 1 (January 1, 1986): 16–21. http://dx.doi.org/10.1115/1.3261136.
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This paper is the first of a series of two devoted to an investigation of wear mechanisms in ceramic/ceramic and ceramic/metal sliding contact tribological systems at high temperatures and exhaust gas environment. The first part presents results of the experiments carried out at room temperature and air environment. Scanning electron microscope, optical microscope and X-ray dispersion analysis were used for an identification of wear mechanisms. Surface geometry and morphology, friction coefficients and wear were determined as functions of sliding distance, nominal contact pressure, sliding velocity and mechanical properties of specimens (hardness and fracture toughness). The wear mechanism of ceramics rubbed against ceramics may be attributed to intensive plastic deformation of surfaces resulting in low cycle fatigue. The wear mechanism of ceramics rubbed against metals was polishing and surface fracture, while that of metals was adhesive transfer of material on to ceramic surfaces. Wear rates and friction coefficients were independent of mechanical properties of metallic samples.
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Jiang, Hong. "Research on Applied-Information Technology in Online Compact System Based on Serial Communication." Advanced Materials Research 1046 (October 2014): 431–35. http://dx.doi.org/10.4028/www.scientific.net/amr.1046.431.
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The ceramic industry fall into two main categories: daily used ceramics and craft ceramic. With the demand for daily used ceramics is increasing in my country, ceramics enterprises are faced with intense market competition. Based on the investigation of ceramic industrial production, the traditional method for Ceramic production has some disadvantages, such as long periods of dies production, complicated production process, wasting human resource, high cost, short life, poor quality, easy to damage. According to the characteristics of daily used ceramics, this paper presents a rapid prototyping system based on RS-232C compacts. This system can cancel the long and complex development process of the dies, and can achieve rapid prototyping of ceramic body, thereby greatly reducing the cost of production of ceramic manufacturers.
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Shi, Hao Yu, Runxuan Pang, Jing Yang, Di Fan, HongXin Cai, Heng Bo Jiang, Jianmin Han, Eui-Seok Lee, and Yunhan Sun. "Overview of Several Typical Ceramic Materials for Restorative Dentistry." BioMed Research International 2022 (July 18, 2022): 1–18. http://dx.doi.org/10.1155/2022/8451445.
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With the development of ceramic technology, prosthodontic ceramics are becoming a useful option for improving esthetic outcomes in dentistry. In this paper, various ceramic materials were reviewed and evaluated, and their advantages and disadvantages and indications in oral prosthodontics were analyzed objectively. The properties of resin-based ceramics, polycrystalline ceramics, and silicate ceramics were compared and analyzed. Resin-based ceramics may replace other ceramic materials in the CAD/CAM field.
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Yan, Yan Yan, Bo Zhao, and Jun Li Liu. "Research on the Fracture Phenomenon of Zirconia-Toughened Alumina Ceramics under Ultrasonic Vibration." Key Engineering Materials 455 (December 2010): 156–60. http://dx.doi.org/10.4028/www.scientific.net/kem.455.156.
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A study of the fracture phenomenon of zirconia-toughened alumina (ZTA) ceramics was carried. It analyzes the mechanisms of crack propagation of ZTA ceramics, and constructs fracture experiments of ZTA ceramics, so the propagation behavior on fracture in ZTA ceramics was investigated according to the experiment. By contrast, intercrystalline fracture happed in V-shaped groove of ceramic specimen under normal load without ultrasonic vibration during ceramic fracture, and transcrystalline fracture happed in V-shaped groove of ceramic specimen under normal load with ultrasonic vibration during ceramic fracture. Furthermore, the loading force of ceramic specimen under normal load with ultrasonic vibration is smaller than that under normal load without ultrasonic vibration all other conditions being equal. The results of fracture experiment prove that ultrasonic vibration assisted is good for the fracture of ceramic specimen, and it also proves that ultrasonic vibration assisted grinding may raise the working efficiency and improve surface integrity of ceramics from the standpoint of the fracture.
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Ding, Liang. "Analysis of Creative Teaching of Ceramics and Student Creativity in Colleges and Universities in China." Scientific and analytical journal Burganov House. The space of culture 18, no. 2 (May 10, 2022): 80–86. http://dx.doi.org/10.36340/2071-6818-2022-18-2-80-86.
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Ceramic art has been an important part of human culture for thousands of years and it has had a significant influence all over the world. China is the home country of ceramics and the progression of ceramic culture has contributed much to the development of human history and civilisation. Education has played a key role in this progression of ceramic art and through ceramics education, the ceramic culture, ceramic arts and the crafts of ceramics, ceramic skills have been passed down from one generation to the next. Ceramics education is an important part of art education. Faced with the globalisation of culture and economics, Chinese ceramic art education and global ceramic art education have a mutual influence on each other and are closely linked together. Therefore, achieving perfection and development in the ceramics education in Chinese universities, specifically in ceramics teaching, is important. In the long term, training students that have creative abilities will influence the current status and the future of ceramics education in China. Today, in China, ceramics are classified as either ‘handwork’ or ‘industrial arts’, focusing on production-oriented requirements like practicality, aesthetic appearance and economy. Ceramics teaching has been restricted by this traditional thinking as it conforms to existing stereotypes. Lacking an interactive paradigm that is open to change, the ceramics teaching in China attaches great importance to the mere training of skills. By analysing the current situation of ceramics education in colleges and universities in China, this paper discusses how to use creative teaching methods to guide students' learning consciousness, improve learning motivation and develop students' creativity from the perspectives of creative teaching and teaching creativity. This is to provide enlightening reflections on the cultivation of students' creativity in ceramics education in colleges and universities.
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Denny Sukma Eka Atmaja and Muhammad Kusumawan Herliansyah. "Optimasi Parameter Pengukuran Dimensi dan Defect Ubin Keramik dengan Metode Taguchi." Jurnal Sistem Cerdas 4, no. 3 (December 28, 2021): 171–79. http://dx.doi.org/10.37396/jsc.v4i3.182.
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The ceramics industry in Indonesia has a large contribution to the growth of various aspects in Indonesia. But in reality, there is still an imbalance between exports and imports for ceramic products. One way is to improve the quality of the ceramic industry in Indonesia. In fact, the ceramic quality inspection process in the ceramic industry is still done manually which can make mistakes in identifying defects. In this study, the design of variable identification system of ceramics was carried out specifically in the area of ceramics and dry spot defects on ceramic surfaces using image processing. Whereas to get a low error rate against the applicable variables, a design of experiment with the Taguchi approach is carried out. The results show that 50 cm distance, 300 lux light, 1x resize and 0.06 threshold can produce an image that has the smallest error value when identifying ceramic area and dry spot defects on the ceramic surface.
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Watanabe, Keiichiro, Tomonori Takahashi, Tomoki Nagae, and Hiroyuki Tsuji. "Precision Forming and Machining Technologies for Ceramic-Based Components." International Journal of Automation Technology 12, no. 5 (September 5, 2018): 739–49. http://dx.doi.org/10.20965/ijat.2018.p0739.
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Structural ceramics components for industrial use are classified under two categories: one that is originally designed for ceramics (Ceramic Origin), and the other that is originally designed for metals and subsequently replaced with ceramics because of their improved hardness and resistance to both heat and corrosion (Metal Origin). Ceramic insulators for power lines and catalytic substrates used to control automotive emissions in gasoline engines are “Ceramic Origin” components. As ceramics are difficult to machine, a precision mold has been used in the forming process to minimize the machining volume in the case of “Ceramic Origin” components. Meanwhile, ceramic turbo charger rotors and valves for automotive engines are “Metal Origin” components, which not only require durability under severe operating conditions but also severe dimensional accuracy, similar to metal parts. These components have been derived from extensive R&D efforts in materials and process technologies for ceramic gas turbines, which have been implemented in the majority of advanced countries since the 1970s. This paper includes some examples of precision forming and machining technologies for both types of ceramic components developed by NGK Insulators, Ltd., and highlight their issues. Finally, the possibility of new types of ceramic-based components will be introduced.
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Garcia, Rubens Nazareno, Reinaldo Francisco do Nascimento, Ana Cristina Rocha Gomes, João Augusto Coutinho Garcia, Luiz Carlos Machado Miguel, Peter Clayton Moon, and Shélen Xavier Fernandes. "Bond strength of resin cements to leucite-reinforced ceramics: part 2 – after one-year aging in water." RSBO 13, no. 3 (May 4, 2017): 156. http://dx.doi.org/10.21726/rsbo.v13i3.308.
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The aim of this study was to compare the shear bond strength (SBS) of two resin cements bonded to four leucite-reinforced ceramics after one week and one year of aging. Material and methods: Forty ceramic blocks (4 mm wide, 14 mm length, and 2 mm thick) were used (1 week) and reused at the back side (1 year). The blocks were abraded with aluminum oxide (90 µm) and randomly divided into eight groups for each time. Two dual resin cements (RelyX ARC and RelyX U200 self-adhesive, 3M ESPE) were bonded to ceramics Creapress (CRE – Creation / Klema), Finesse All-Ceramic (FIN – Dentsply / Ceramco), IPS Empress Esthetic (IEE – Ivoclar Vivadent) and Vita PM9 (PM9-Vita). For each resin, time, and ceramic block, after applications of the 10% hydrofluoric acid (for 1 min) and silane, 3 Tygon cut tubes were positioned over each block and filled in with the resin cements (light-cured for 40 s). The tubing molds were removed to expose the bond specimens as cylinders (area=0.38 mm2) stored in relative humidity at 24±2°C for one week and at 37±2°C for one year. All bonds were tested in an Instron in shear (applied of the base cylinder with a thin wire - 0.25 mm) at speed of 0.5 mm/min, until failure. Results: The results were analyzed by ANOVA (resin cements, ceramic systems, and time) and Tukey test (p<0.05) for rank ordering of SBS. The FIN and IEE ceramics did not show significant SBS decreasing on aging with U200. The mean SBS decreasing for all the ceramics was 36% with ARC and 14% with U200 cement. Conclusion: The SBS of ARC cement were significantly lower for all ceramics with aging than that of U200 cement. The SBS of ARC cement was also weakened by aging. FIN ceramic + U200 cement proved to be the most stable and strongest bond strength, and PM9+ARC cement proved to be the weakest bond strength with low stability.
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Li, Bei, X. B. Liu, M. Chen, and X. A. Mei. "Ferroelectric Properties of Bismuth Titanate Ceramics by Tm2O3/V2O5 Substitution." Key Engineering Materials 633 (November 2014): 374–77. http://dx.doi.org/10.4028/www.scientific.net/kem.633.374.
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The ferroelectricity of Bi3.25Tm0.75Ti2.97V0.03O12 (BTTV) ceramic prepared at 1200°C by a conventional ceramic technique was investigated. The ceramic possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BTTV ceramics are 25 μC/cm2 and 70kV/cm, respectively. The Pr value of the BTTV ceramics up to 25 μC/cm2 is larger than that of the BTT ceramics. Therefore, co-sustitution of Tm and V in Bi4Ti3O12 (BIT) ceramics is effective for the improvement of the ferroelectricity of Bi4Ti3O12 ceramics.
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Tian, Fang, X. A. Mei, M. Chen, and C. Q. Huang. "Ferroelectric Properties of Bismuth Titanate Ceramics by Pm3+/V5+ Substitution." Key Engineering Materials 591 (November 2013): 228–31. http://dx.doi.org/10.4028/www.scientific.net/kem.591.228.
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The ferroelectricity of Bi3.25Pm0.75Ti3O12 (BPT), and Bi3.25Pm0.75Ti2.97V0.03O12 (BPTV) ceramics prepared at 1200°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BPT ceramic are 16 μC/cm2 and 62kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BPT ceramic up to 25 μC/cm2 which is larger than that of the BPT ceramic. Therefore, co-sustitution of Pm and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroelectricity.
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Cui, Fengdan, Guoqing Wu, Tian Ma, and Weiping Li. "Effect of Ceramic Properties and Depth-of-penetration Test Parameters on the Ballistic Performance of Armour Ceramics." Defence Science Journal 67, no. 3 (April 25, 2017): 260. http://dx.doi.org/10.14429/dsj.67.10664.
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<p>Through an analysis on the relationship among ceramic properties, the depth of penetration (DOP) test parameters and the ballistic performance of armour ceramics based on literatures, the effects of ceramic type, tile thickness and projectile velocity on the ballistic performance of different kinds of ceramics were investigated systematically. The results show that the ballistic performance of different armour ceramics mainly depends on its density, and by using thin ceramic tiles or under high velocity impact, the ceramic composite armour could not provide effective ballistic protection. Furthermore, the differences in the ballistic performance of armour ceramic are found due to the different ballistic performance criteria and DOP test conditions. Additionally, the slope of the depth of penetration (not include tile thickness) (Pa) versus tile thickness has negative correlation with flexural strength of ceramics, indicating the flexural strength can be one of the criteria to evaluate the performance of armour ceramics.</p>
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Dennis, James E., Stephen E. Haynesworth, Randell G. Young, and Arnold I. Caplan. "Osteogenesis in Marrow-Derived Mesenchymal Cell Porous Ceramic Composites Transplanted Subcutaneously: Effect of Fibronectin and Laminin on Cell Retention and Rate of Osteogenic Expression." Cell Transplantation 1, no. 1 (January 1992): 23–32. http://dx.doi.org/10.1177/096368979200100106.
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Cultured-expanded rat marrow-derived mesenchymal cells differentiate into osteoblasts when combined with a porous calcium phosphate delivery vehicle and subsequently implanted in vivo. In this study, the effects of ceramic pretreatment with the cell-binding proteins fibronectin and laminin on the osteogenic expression of marrow-derived mesenchymal cells were assessed by scanning electron microscopy, [3H]-thymidine-labeled cell quantitation, and histological evaluation of bone formation. Scanning electron microscopic observations showed that marrow-derived mesenchymal cells rapidly spread and attach to both fibronectin- or laminin-adsorbed ceramic surfaces but retain a rounded morphology on untreated ceramic surfaces. Quantitation of [3H]-thymidine labeled cells demonstrated that laminin and fibronectin preadsorbed ceramics retain approximately double the number of marrow-derived mesenchymal cells than do untreated ceramics harvested 1 wk postimplantation. Histological observations indicate that the amount of time required to first detect osteogenesis was shortened significantly by pretreatment of the ceramic with either fibronectin or laminin. Fibronectin- and laminin-coated ceramic composite samples were observed to contain bone within 2 wk postimplantation, while in untreated ceramic the earliest observation of bone was at 4 wk postimplantation. A comparison was made of the initial cell-loading, in vivo cell retention characteristics, and rate of osteogenesis initiation of marrow-derived mesenchymal cells on two types of ceramic with different pore structure and chemical composition, with and without preadsorption with fibronectin or laminin. “Biphasic” ceramics contain randomly distributed pores 200-400 μm in diameter, and “coral-based” ceramics have continuous pores of approximately 200 μm in diameter. Laminin or fibronectin preadsorption significantly increases the number of cells retained in all ceramic test groups by day 7 postimplantation. In addition, by day 7 postimplantation, the biphasic ceramics retain a significantly greater number of cells for all test groups than do coral-based ceramics. The biphasic ceramics consistently have more specimens positive for bone with the identical cell-loading conditions used throughout this study. These results indicate that the retention of cells within the ceramic is an important factor for optimization of marrow mesenchymal cell initiated bone formation. The retention of cells within ceramics is augmented by the adsorption of the cell-binding proteins laminin and fibronectin, but this effect varies depending on ceramic pore structure and/or chemical composition.
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Zhang, Tian Hang, Yan Gai Liu, Cheng Xue Yang, Jin Qiu Zhao, Zhao Hui Huang, and Ming Hao Fang. "Preparation and Electrical Properties of Sr2KNb5O15 Ceramics by Molten Salt Method." Key Engineering Materials 591 (November 2013): 194–99. http://dx.doi.org/10.4028/www.scientific.net/kem.591.194.
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Sr2KNb5O15 ceramic powders have been synthesized by molten salt method, ceramics were sintered via a pressureless sintering method. The effect of calcining temperature on the phase composition and microstructure of ceramic powders were investigated by XRD and SEM analysis. The results show that microstructure of ceramic powders changed from acicular to platy, and the average size of ceramic powders become bigger with the calcining temperature increased. The optimal calcining temperature was 1200°C, and the length and diameter of ceramic powders was about 1-5 mm and 0.2-1 mm, thus the aspect ratio of ceramic powders was about 1-5. The influence of sintering temperature on density, microstructure and electrical properties of the ceramics were systematically analyzed. The results indicate that density and electrical properties of the ceramics first increased then decreased with increasing the sintering temperature. When the sintering temperature was 1400°C, the ceramics show optimized relative density and electrical properties (d33=40 pC/N, er=616, tand=0.029, Ec=9.83 kV/cm, Pr=32.50 mC/cm2).
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Denry, Isabelle L. "Recent Advances in Ceramics for Dentistry." Critical Reviews in Oral Biology & Medicine 7, no. 2 (April 1996): 134–43. http://dx.doi.org/10.1177/10454411960070020201.
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For the last ten years, the application of high-technology processes to dental ceramics allowed for the development of new materials such as heat-pressed, injection-molded, and slip-cast ceramics and glass-ceramics. The purpose of the present paper is to review advances in new materials and processes available for making all-ceramic dental restorations. Concepts on the structure and strengthening mechanisms of dental ceramics are provided. Major developments in materials for all-ceramic restorations are addressed. These advances include improved processing techniques and greater mechanical properties. An overview of the processing techniques available for all-ceramic materials is given, including sintering, casting, machining, slip-casting, and heat-pressing. The most recent ceramic materials are reviewed with respect to their principal crystalline phases, including leucite, alumina, forsterite, zirconia, mica, hydroxyapatite, lithium disilicate, sanidine, and spinel. Finally, a summary of flexural strength data available for all-ceramic materials is included.
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Dulnev, A. "Applications of ceramics in composite protective structures." Transactions of the Krylov State Research Centre 2, no. 396 (May 21, 2021): 52–66. http://dx.doi.org/10.24937/2542-2324-2021-2-396-52-66.
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Object and purpose of research. The object of the study is ceramic-containing protective structures. The purpose of the study is to substantiate the feasibility and effectiveness of using ceramics as part of standard ship structures for protection against the effects of high-speed damaging elements. Materials and methods. Composites of the "ceramic + steel", "ceramic + fiberglass" type, made with the use of poly-crystalline ceramic materials based on boron carbide, nitride and silicon carbide, aluminum oxide and some other types, are considered. The study is based on an analytical approach, the results of ballistic tests of ceramic-containing composites and computational collapse simulation of ceramics in the composition of armor structures. Main results. The results of experimental studies demonstrating the level of efficiency of ceramic-containing structures are presented. The influence of the fragmentation features of various types of ceramics on the ballistic robustness of protective structures is shown. Structural and technological solutions aimed at increasing the survivability and ensuring the mounting of ceramic-containing structures on the ship are presented. Conclusion. The high efficiency of ceramics use in ship structures for protection against the impact of high-speed damaging elements is demonstrated. The use of ceramics in protective structures allows to get a significant increase in the ballistic robustness of structures while ensuring their ballistic survivability.
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He, Runhui, Yuna Sheng, Jianxin Zhang, Zihan Xu, Chengrui Li, and Liya Wang. "Study on Ceramic Sintering Process Based on Random Forest." Academic Journal of Science and Technology 4, no. 3 (February 8, 2023): 177–82. http://dx.doi.org/10.54097/ajst.v4i3.5054.
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While the manufacturing process of ceramics is complex and each link is important to the ceramic, we focus on the sintering process of ceramics and construct models and algorithms to investigate the temperature of the ceramic sintering process in order to improve the yield of the ceramic sinter. We make full use of the ceramic sintering process node temperature and ceramic product problem data, adopt factor analysis for data dimensionality reduction, and use principal component analysis to extract factors to improve efficiency for subsequent optimisation. The random forest algorithm of integrated machine learning is used to investigate the effect of different nodal temperature rates on the ceramic product, and a decision tree is derived to identify the more influential temperature rates. These obtained important temperature factors affecting ceramic sintering can be used as a reference for the ceramic sintering process, thus achieving a study of the temperature of the ceramic sintering process.
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Takagi, Hiroshi. "History and Future Prospect of Electro-ceramics in Japan and Asia." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2012, CICMT (September 1, 2012): 000002–9. http://dx.doi.org/10.4071/cicmt-2012-kn2_murata.
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On the background of a long history of Japanese ceramics, various electro-ceramic materials have been studied and many kinds of electronic components using them have been developed in Japan. The first invention of electro-ceramics in Japan should be a ferrite at Tokyo Institute of Technology in 1930, and the mass production of ferrite started in 1937. Then, Japanese electro-ceramic industry has led the world on electro-ceramic materials and components until now, especially in the fields of BaTiO3, PZT, PTC thermistor, ZnO varistor and insulating ceramics. In recent years, new electro-ceramic materials, their processes and new devices using them have been still studied actively in Japan. Currently, R&D activities in Asia outside of Japan, and electro-ceramic industries in those areas have been grown steadily.
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ÖNEY, Dicle. "IMJIN SAVAŞI SONRASI KORELİ ÇÖMLEKÇİLERİN JAPON SERAMİK KÜLTÜRÜNE ETKİLERİ." SOCIAL SCIENCE DEVELOPMENT JOURNAL 7, no. 33 (September 15, 2022): 43–56. http://dx.doi.org/10.31567/ssd.734.
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The Imjin War was fought between Japan and Korea between 1592 and 1598. The process that started with Japan's invasion of Korea resulted in the capture of skilled Korean craftsmen and about 800 Korean potters, among them, after the war. Captive Korean potters were settled in areas of western and southern Japan ruled by the Lords of the time. Korean potters, who have a deep-rooted ceramic tradition, developed ceramic production techniques in the Japanese regions where they were placed and became the creators of products such as Satsuma-yaki, Hagi and Karatsu ceramics, and Arita porcelain, which are known today as Japanese ceramics. As a result of the effects of Korean potters captured as a kind of war booty on Japanese ceramic art and culture, the Imjin War in the literature of ceramic art history; is called the “Tea Bowl War”, “The Pottery War” and the “Ceramic War”. In this study, a brief history of the Imjin War is given, the Korean ceramic tradition and culture, which reached its peak during the pre-war Joseon Dynasty, is evaluated through examples, and finally, technical and formal transformations and new formations in post-war Japanese ceramic production are examined. Keywords: Imjin War, Tea Bowl War, Pottery War, Korean Ceramics, Japanese Ceramics
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Miculescu, Florin, Lucian Toma Ciocan, Daniela Meghea, and Marian Miculescu. "Morphologic Characterization of Ceramic-Ceramic Dental Systems Failure." Key Engineering Materials 614 (June 2014): 140–43. http://dx.doi.org/10.4028/www.scientific.net/kem.614.140.
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Sintered ceramics and ceramic glasses are frequently used as biomaterials for dental restorations, usually for inlays, onlays, veneers, crowns or bridges. In this study we analyzed several types of ceramic-ceramic type prosthetic restorations in order to assess the types of defects that can lead to their failure. The research aim is to morphologically identify by scanning electron microscopy the main types of defects that lead to failure over time of ceramic-ceramic prostheses type. The type of failure registered were fracture of plating material (feldspatic porcelain) and fracture of entire structure (zirconia and feldspatic porcelain).
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Sugiyama, Toyohiko, Hajime Nagae, Kazuo Suzuki, and Kenichi Nakano. "Ceramic Brick with High Water Retentivity Prepared from Ceramic Waste and by Products." Advances in Science and Technology 45 (October 2006): 2235–39. http://dx.doi.org/10.4028/www.scientific.net/ast.45.2235.
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Many kinds of industrial waste were examined as potential constituents of ceramic bricks or tiles. The basic physical properties of these materials were measured, such as sintering temperature, water absorption, porosity, density, color, chemical stability and bending strength. Several kinds of sintered ceramics containing large amounts of waste materials were obtained by adjusting the amount of the waste materials added to the ceramics. These were fired at temperatures lower than 1000°C. A lowering of firing temperature results in a reduction of discharge of CO2 on the production process. Ceramic brick with high water retention is expected to mitigate the heatisland phenomenon by the latent heat of evaporation. Porous ceramics were prepared using industrial waste, burned ash and recycled roofing tile as raw materials. The permeability, water retentivity, water absorption, and other properties of the porous recycled ceramics were investigated. The pF value of the ceramics was measured as an indicator of water retentivity. An appropriate method of characterizing water retentive ceramic materials was also discussed based on results of fundamental examination of the ceramics under practical conditions.
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Wang, Hui, Bang Cheng Yang, Qi Feng Yu, Dayi Wu, and Xing Dong Zhang. "In Vitro Bioactivity of Composite of Nanophase Titania/Bioactive Glass-Ceramic in Simulated Body Fluid." Key Engineering Materials 288-289 (June 2005): 171–74. http://dx.doi.org/10.4028/www.scientific.net/kem.288-289.171.
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Titania ceramics is lack of bone-bonding ability even if it has excellent biocompatibility. Recently, it is even found that the nanophase titania ceramics could enhance the proliferation of osteoblasts. If the bone-bonding ability of this material is improved, it would be a potential bone replacement material. Bioactive glass-ceramic (BGC) is provided with the best bioactivity in biomaterials. In this study, the apatite formation ability and the mechanic properties of titania ceramic were investigated by the accession of BGC. Four samples: TiO2 ceramic, TiO2 +10%BGC, TiO2 +20%BGC and BGC were prepared respectively. These ceramics were exposed to a simulated body fluid (SBF) for 7, 14 and 21d. Scanning electron microscopy (SEM), energy dispersive X-ray detector (EDX) and thin film X-ray diffraction (TF-XRD) results showed that the apatite formation of the ceramics was improved by adding BGC into nanophase titania ceramic. The mechanical analysis showed the biomechanical compatibility was also improved by adding BGC into nanophase titania ceramic.
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Somiya, Shigeyuki, Sridhar Komarneni, and Rustum Roy. "Ceramic Powders for Advanced Ceramics: What are Ideal Ceramic Powders for Advanced Ceramics?" Transactions of the Materials Research Society of Japan 20thAnniv (2012): 47–57. http://dx.doi.org/10.14723/tmrsj.20thanniv.47.
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Somiya, Shigeyuki, Sridhar Komarneni, and Rustum Roy. "Ceramic Powders for Advanced Ceramics: What are Ideal Ceramic Powders for Advanced Ceramics?" Transactions of the Materials Research Society of Japan 35, no. 3 (2010): 473–83. http://dx.doi.org/10.14723/tmrsj.35.473.
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Wu, Hongchang, and Yamin Ma. "Application of 3D Printing Reconstruction Algorithm in Ancient Ceramic Restoration." Scientific Programming 2022 (January 29, 2022): 1–10. http://dx.doi.org/10.1155/2022/8529229.
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The study of the ancient ceramic is of great significance to the identification of authenticity, value recognition, cultural types, and dissemination channels of the ceramic. In this study, a series of technical problems such as ceramic contour extraction, image distortion correction, and nonlinear contour modeling for 3D printing of rotating body under complex background were solved and a restoration algorithm for the shape of ancient ceramics was proposed. Then, an accurate contour model is established by using the two-dimensional images of the rotating ancient ceramics to reconstruct the three-dimensional model of the ceramic shape. The experimental results show that the modeling algorithm for three-dimensional printed ceramics can accurately obtain the three-dimensional model of rotating ancient ceramics, which is of certain significance to explore a new direction of the research and development of three-dimensional printed ancient ceramics.
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Zhang, Yu. "Preparation And Degreasing Process Optimization of Light-Curing Slurry for Alumina Ceramics." Highlights in Science, Engineering and Technology 51 (May 16, 2023): 210–16. http://dx.doi.org/10.54097/hset.v51i.8268.
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Aluminum oxide ceramic light-curing paste preparation and degreasing has always been an important part of the production and manufacturing of alumina ceramics, and is also the key to ensure the quality of alumina ceramics, so it has been the attention of relevant technical personnel and workers and concerns. The traditional alumina ceramic light-curing paste preparation and degreasing process still has some shortcomings, and if these shortcomings are not compensated in time, the overall quality of alumina ceramics will be affected, so the alumina ceramic light-curing paste preparation and degreasing process must be continuously optimized. In this regard, this paper analyzes in detail the preparation and degreasing process optimization of light-curing slurry for alumina ceramics. The preparation of alumina ceramic light-curing paste with incomplete degreasing and other undesirable phenomena will not only lead to the occurrence of a large number of porosity, but also increase the incidence of defects such as cracks, thus reducing the quality of ceramics. Therefore, as the relevant staff, not only should pay great attention to the preparation and degreasing of alumina ceramic light-curing paste, but also according to the various preparation and degreasing problems that occurred in the past, and constantly optimize the existing alumina ceramic light-curing paste preparation and degreasing process, if necessary, with the help of 3D printing technology, light-curing molding (SLA) technology modern high-tech technology, to constantly optimize the alumina ceramic light-curing paste Preparation and degreasing process
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de Matos, Jefferson David Melo, Guilherme Rocha Scalzer Lopes, Daher Antonio Queiroz, Leonardo Jiro Nomura Nakano, Nathália Carvalho Ramos Ribeiro, Adriano Baldotto Barbosa, Lilian Costa Anami, and Marco Antonio Bottino. "Dental Ceramics: Fabrication Methods and Aesthetic Characterization." Coatings 12, no. 8 (August 22, 2022): 1228. http://dx.doi.org/10.3390/coatings12081228.
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This study aimed to describe different staining protocols for the main dental ceramics. A bibliographic search was conducted in the main health databases PubMed and Scholar Google, in which 100 studies published were collected. In vitro and in silico studies, case reports, and systematic and literature reviews, on ceramic materials, were included. Therefore, articles that did not deal with the topic addressed were excluded. Ceramics can be classified into glass-matrix ceramics (etchable), polycrystalline (non-etchable), and hybrid ceramics. In this context, different fabrication methods, method indications, and characterization layers can be used for each ceramic group and numerous protocols differ according to the choice of material. Several ceramic systems are available, thus professionals in the prosthetic area need constant updates on dental ceramic restorations and their proper characterizations.
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Andriyani, Meita, Sonya Harwasih, and Eny Inayati. "Fabrication Technique of Dental Restoration Using Hybrid Ceramic With Cad Cam Method." Journal Of Vocational Health Studies 1, no. 1 (July 3, 2017): 32. http://dx.doi.org/10.20473/jvhs.v1.i1.2017.32-38.
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Background : Ceramic is superior in aesthetic but fragile and breakable under bite pressure . Lack of understanding of material requirements for resistance in the oral cavity and minimal ceramic processing techniques is the initial cause of the failure. Hybrid ceramic dental restoration is a material that combines the good properties of ceramics and composites that have elasticity and ensures high strength and minimize the wall thickness of the restoration. Mechanical manufacture of dental restorations currently growing, CAD CAM systems are becoming popular in the field of dentistry. CAD CAM provides the advantage that the effectiveness of the time, does not require a lot of human resources, and produce a restoration with good quality. Purpose: To explain hybrid ceramic material and techniques of making hybrid ceramic dental restorations with CAD CAM system. Review: Hybrid ceramic is a material that combines the advantages of ceramics and composite elasticity. This material contains a hybrid structure with two networks, ceramic and polymer are linked to each other, known as double hybrid network. It added that the structure of the ceramic feldspathic network (86% wt) is reinforced by a polymer network (14% wt) are integrated as a polymer network filling cavities that exist in the network and make its structure ceramic hybrid ceramic material becomes denser. Conclusion: Hybrid ceramic having chewing load capacity and high elasticity, flexural strength 150-160 Mpa and fracture toughness 1.5 Mpa, higher than conventional ceramics. Mechanical manufacture of dental restorations using ceramic hybrid materials with CAD CAM method begins with scanning, selection of materials and tooth shade, designing, milling, followed by finishing, polishing, ends with staining and glazing.
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RAKHIMOV, RUSTAM, and DILMUROD MUKHTOROV. "INVESTIGATION OF A FILM-CERAMIC COMPOSITE IN A SOLAR CELL." Computational Nanotechnology 9, no. 1 (March 28, 2022): 132–38. http://dx.doi.org/10.33693/2313-223x-2022-9-1-132-138.
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The results of comparative tests of a polyethylene film and a film-ceramic composite of sun-dried grapes are presented. A film-ceramic composite based on polyethylene and functional ceramics allows deeper and faster drying of products compared to conventional polyethylene film. The film-ceramic composite, other things being equal, makes it possible to achieve a commercial degree of drying of grapes almost 1.5 times faster. When drying grapes, the faster drying rate is most likely determined by the deeper penetration of the pulsed radiation generated by functional ceramics. Conventional polyethylene film without functional ceramics completely degraded in about 2 months. The film-ceramic composite did not change at all during the year.
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Vasiliu, Roxana-Diana, Sorin Porojan, and Liliana Porojan. "The Influence of Oral Environment on the Optical Properties of Heat- pressed Ceramics." Materiale Plastice 56, no. 1 (March 30, 2019): 271–76. http://dx.doi.org/10.37358/mp.19.1.5164.
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The interest in aesthetics of dental materials is becoming greater with time and dental ceramics have proven excellent aesthetic properties. The study investigated how does the oral environment and the different surface finishing affect the optical properties and roughness of two types of ceramic, obtained using the heat- pressed method. Results showed that immersion has some influence on the optical and roughness of the two types of ceramics, but the major influence is made by the surface finishing and the type of ceramic. Lithium disilicate ceramic proved to have better optical properties compared to feldspathic ceramic. Roughness values showed that the parameters(Ra and Rz) were influenced by the surface finishing for both type of ceramics.
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Altun, Altan Alpay, Thomas Prochaska, Thomas Konegger, and Martin Schwentenwein. "Dense, Strong, and Precise Silicon Nitride-Based Ceramic Parts by Lithography-Based Ceramic Manufacturing." Applied Sciences 10, no. 3 (February 3, 2020): 996. http://dx.doi.org/10.3390/app10030996.
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Due to the high level of light absorption and light scattering of dark colored powders connected with the high refractive indices of ceramic particles, the majority of ceramics studied via stereolithography (SLA) have been light in color, including ceramics such as alumina, zirconia and tricalcium phosphate. This article focuses on a lithography-based ceramic manufacturing (LCM) method for β-SiAlON ceramics that are derived from silicon nitride and have excellent material properties for high temperature applications. This study demonstrates the general feasibility of manufacturing of silicon nitride-based ceramic parts by LCM for the first time and combines the advantages of SLA, such as the achievable complexity and low surface roughness (Ra = 0.50 µm), with the typical properties of conventionally manufactured silicon nitride-based ceramics, such as high relative density (99.8%), biaxial strength (σf = 764 MPa), and hardness (HV10 = 1500).
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Tian, Ye, and Xiaobing Hu. "SWOT Analysis of China’s Ceramic Industry and the Use of Computers for Scientific and Technological Innovation Research." Scientific Programming 2021 (August 13, 2021): 1–9. http://dx.doi.org/10.1155/2021/5395988.
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Chinese ceramics have a long history and have been deeply recognized by the world after centuries of changes. The current world ceramic industry is diversified. Under this background, there is a huge challenge to the development of Chinese ceramics. The update of materials, the participation of computers in ceramic design, and the demonstration of ingredients all constitute technological factors that cannot be ignored in the development of the ceramic industry. Therefore, this study uses the SWOT analysis method to analyze the development of Chinese ceramics, puts forward its advantages and disadvantages, opportunities, and threats, and under the background of advanced technology, and how to use computer software to demonstrate raw materials and color matching to make Chinese ceramics. The development achieves the goal of self-improvement and then completes the upgrade of its production process and production. Through the research of this study, it is found that the current development of China’s ceramic industry should be good at using SWOT analysis, face up to its shortcomings and pressure from other ceramic production areas in the world, give full play to its advantages, maximize strengths and avoid weaknesses, and use technological innovation, combined with technical factors from other disciplines, to promote ceramic industry design and production capabilities and provide a reference for the current ceramic industry development.
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Wang, Ning Zhang, Sha Sha, and Yu Tian Ma. "Influence of Doped Mn, Cu, Ni and Fe on Electrical Properties of SrTiO3 Ceramics." Advanced Materials Research 79-82 (August 2009): 1603–6. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.1603.
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MnCO3, CuO, NiO and Fe2O3 doped SrTiO3 multifunction ceramics were fabricated firstly. The microstructure and electrical properties were investigated. The results show that MnCO3 doped ceramic and CuO doped ceramic possess relative higher resistivity (ρ),nonlinear coefficient (α), varistor voltage (V1mA) and relative lower dielectric constant (ε),dielectric loss (tgδ) in contrast with NiO doped ceramic and Fe2O3 doped ceramic with the same contents under the same sintering conditions. The electrical properties among the ceramics doped are different due to the different behaviors of Mn,Cu,Ni and Fe acceptor dopants during the sintering course.
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Jing, Weiyu. "Kitchen knife blade made from ceramic." Advances in Engineering Technology Research 4, no. 1 (March 18, 2023): 630. http://dx.doi.org/10.56028/aetr.4.1.630.2023.
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The kitchen knife blades currently on the market are divided into metal blades and ceramic blades, and the performance of ceramic blades is better than that of metal blades. According to the performance of the blade, Yttria-steaded zirconia ceramic material is the most suitable to be made into ceramic blade. Zirconia ceramics have good mechanical properties, anti-corrosion, not easy to leave odor and light weight. The only disadvantage of zirconia ceramics is its high cost, but it can be recycled and reused later to reduce costs.
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Meng, Kejing, Lu Wang, Jintao Wang, Zhuoqun Yan, Bin Zhao, and Bing Li. "Effect of Optical Properties of Lithium Disilicate Glass Ceramics and Light-Curing Protocols on the Curing Performance of Resin Cement." Coatings 12, no. 6 (May 24, 2022): 715. http://dx.doi.org/10.3390/coatings12060715.
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This study aimed to investigate the effects of optical properties of lithium disilicate glass ceramics and the light-curing protocols (LCP) on the curing performance of light-cured resin cement. Lithium disilicate glass-ceramics with different optical properties were sectioned to produce ceramic specimens of 0.8 mm thickness. Irradiance through the ceramic specimens was measured by a radiometer. Light transmittance of ceramics was assessed using a UV/Vis spectrophotometer. The light-cured resin cement was injected into a Teflon mold and ceramics with different optical properties were placed on it, cured under different LCPs, and the degree of conversion (DC) and Vickers microhardness of the resin cement were separately measured by Micro-ATR/FTIR spectrometry and the microhardness tester. The shade (p < 0.001) and transparency (p < 0.001) of ceramics affect the irradiance of the light-curing unit. The transparency (p < 0.001) of the ceramic and light-curing protocols (p < 0.001) affect the DC and microhardness of resin cements. When the thickness of the ceramic is 0.8 mm, the light transmittance of the ceramic and the curing performance of the resin cement increase with the increase of the transparency of the ceramic. An appropriate increase in irradiance and exposure time can optimize the curing performance of resin cement. These factors should be taken into account by the clinician when designing the bonding solution for porcelain veneers.
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Sunny, MSH, MR Islam, MS Rahman, and MT Hasan. "Effects of waste ceramic aggregate on compressive strength of cement mortar." Progressive Agriculture 30, no. 3 (January 29, 2020): 311–16. http://dx.doi.org/10.3329/pa.v30i3.45157.
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In Bangladesh, the cost of building materials is increasing gradually, available raw materials of construction are not sufficient to meet up the needs of the country. For that we have to find out cheaper and waste materials (such as ceramic waste) to reuse for construction. The study was conducted to observe the physical properties of waste ceramics and compressive strength of ceramics mortar for different curing ages. The study was done to check the probability of using waste ceramics instead of natural aggregates (sand).The fineness modulus of ceramics aggregates was 2.94. Ceramic aggregate absorbs 5.89% moisture whereas sand absorbs 14.33%. Generally, finer the aggregate shows greater the compressive strength. Though the fineness modulus of ceramics was greater than that of sand, it possessed higher compressive strength because of its self-strength. The ratio of mortar mixture was (1:2) and (1:3) for different curing periods both sand and ceramics samples. The compressive strength of sand and ceramic mortar was 2603 psi and 3500 psi respectively at the ratio of (1:2) for 3 days curing. On the other hand the compressive strength of sand and ceramics mortar was 2340 psi and 3075 psi respectively at the ratio of (1:3) for 3 days curing. Between the sand and ceramic mortar, the compressive strength of ceramic mortar was found maximum at 28 days curing period. It can be concluded that recycled ceramic aggregates will be used in comparatively low load bearing, low cost temporary and medium category farming etc. concrete structure.
Progressive Agriculture 30 (3): 311-316, 2019
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Liu, Chun Feng, Feng Ye, and Yu Zhou. "In Situ Toughened α-Sialon Ceramics Doped with Lutecia and Ytterbia." Key Engineering Materials 353-358 (September 2007): 1525–28. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1525.
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Ytterbia and Lutecia were adopted to stabilize α-sialon ceramics during a two-step hot press sintering, respectively. Although Yb3+ and Lu3+ possess the similar small ion size (0.86 Å and 0.85 Å) as two adjacent rare-earth elements, Yb- and Lu-α-sialon ceramics present very different microstructure and properties. Yb-α-sialon ceramic is fully composed of α-sialon phase without any secondary phase. The ceramic incorporated with Lu2O3 also consists of α-sialon phase, but a trace amount of intergranular phase J′ (Lu4Si2-xAlxO7+xN2-x) still remains at the boundary. Microstructure observation indicates the fully equiaxial grain morphology of Yb-α-sialon ceramic. However, elongated grains appear in the Lu-α-sialon ceramic, coexisting with small equiaxed grains. Owing to the almost full α-sialon phase assemblage, both ceramics present high hardness with the value of over 21 GPa. Lu-α-sialon ceramic possesses good toughness, which is attributed to the elongated grains assisting the facilitation of toughening mechanism. The equiaxied grain morphology results in a comparatively lower toughness for Yb-α-sialon ceramic.
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Wu, Chia Ching, Ying Hsun Lin, Ping Shou Cheng, Chao Chin Chan, and Cheng Fu Yang. "The Influences of NaNbO3 on the Dielectric and Structure Characteristics of (1-X) (Na0.5Bi0.5)TiO3–x NaNbO3 Ceramics." Advanced Materials Research 415-417 (December 2011): 1064–69. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.1064.
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Perovskite-based (1-x) (Na0.5Bi0.5)TiO3-x NaNbO3 [(1-x) NBT-x NN, x = 0.1, 0.2, 0.3 and 0.4] ceramics were sintered at 1080°C. Dielectric characteristics, crystalline structures, and Raman investigations were carried out on (1-x) (Na0.5Bi0.5)TiO3-x NaNbO3 ceramics. X-ray diffraction (XRD) patterns showed that NaNbO3 ceramic would form a solid solution with (Na0.5Bi0.5)TiO3 ceramic, and and unknown or second phases were not observable as well. NaNbO3 ceramic diffused into the crystalline structure of (Na0.5Bi0.5)TiO3 ceramic and (1-x) NBT-x NN ceramics still revealed a rhombohedral structure. The temperature-dielectric constant curves showed that as NN content increased, the temperature to reveal the maximum dielectric constant (Tm) was raised, the depolarization temperature (Td) was shifted to lower value, and the dielectric constant at Tm and the loss tangent at Td gradually decreased. The Raman bands at 770 and 830 cm-1 were attributed to the existence of the oxygen vacancies. In this study, the relaxor-type ferroelectric properties of NBT ceramic had been improved as NN ceramic was added.
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Mesaros, Anca, Michaela Mesaros, Diana Dudea, Alexandrina Muntean, and Mandra Badea. "Ceramics and Orthodontics." Key Engineering Materials 587 (November 2013): 343–48. http://dx.doi.org/10.4028/www.scientific.net/kem.587.343.
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Introduction: An orthodontist has two clinical situations in which he is confronted with ceramics: 1. Use of ceramic brackets 2. Applying brackets on teeth with ceramic restorations. Aim: The present study wishes to emphasize the advantages and the disadvantages that the use of ceramics has brought to the orthodontic profession. Material And Method: 75 consecutive adult orthodontic patients after being presented with their treatment plan were administered a questioner to motivate their choice in the type of braces and the cases with aesthetic braces or which had ceramic restorations prior to orthodontics received a special follow-up threw-out their treatment. Results: Ceramic braces are chosen for aesthetic reasons but sometimes they create other type of problems during treatment. Adhesion between braces and ceramic restorations rests problematic. Conclusions: The use of ceramics in orthodontics was indispensable but dental materials still need to be perfected.
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Lampropoulou, Paraskevi, and Dimitrios Papoulis. "Halloysite in Different Ceramic Products: A Review." Materials 14, no. 19 (September 23, 2021): 5501. http://dx.doi.org/10.3390/ma14195501.
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The increased demands of our rapidly developing way of life lead to the broadening of the ceramic market among other effects. Due to the advanced ceramic properties of halloysite and its abundance, combined with its good synergistic effect with other materials, it has been investigated for multifarious possible applications to produce traditional and advanced ceramics as well as ceramic composites. In this review, a substantial number of studies by several investigators into halloysite-based ceramics were are summarized. The possibilities and limitations of different halloysite-based ceramic materials for future applications are also discussed in this manuscript and new fields of research are proposed. The summarization of published results indicates a constant scientific interest in halloysite-based traditional ceramics and new potential uses in the future. Additionally, investigations on different novel ceramic composites with low cost halloysite nanotubes (HNTS) have rapidly increased, covering different scientific and technological areas. On the other hand, research into advanced ceramics (SiAlONS) has been pursued due to its highly cost effective technology treatments on a large scale.
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Jurado, Carlos A., Saad Alresayes, Silvia Rojas-Rueda, Ali Alqahtani, Akimasa Tsujimoto, Nicholas G. Fischer, and Kelvin I. Afrashtehfar. "Ceramic versus Composite Resin Polishing Systems on the Surface Roughness of Milled Leucite-Reinforced Ceramics." Medicina 59, no. 6 (May 29, 2023): 1048. http://dx.doi.org/10.3390/medicina59061048.
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Background and Objective: This study aimed to compare the surface finish of milled leucite-reinforced ceramics polished with ceramic and composite polishing systems based on the manufacturers’ recommendations. Materials and Methods: Sixty subtractive computer-aided manufactured (s-CAM) leucite-reinforced glass-ceramic specimens (IPS-Empress-CAD) were assigned into six groups: no polishing, a ceramic polishing kit, and four composite kit groups. The roughness average (Ra) was evaluated in microns using a profilometer, and scanning electron micrographs were obtained for qualitative analysis. A Tukey HSD posthoc test (α = 0.05) was used to determine significant intergroup differences. Results: After surface evaluation of the ceramics, the Ra values of the polishing systems ranked OptraFine (0.41 ± 0.26) < Enhance (1.60 ± 0.54) < Shofu (2.14 ± 0.44) < Astropol (4.05 ± 0.72) < DiaComp (5.66 ± 0.62) < No Polishing (5.66 ± 0.74). Discussion: Composite polishing systems did not provide as smooth surfaces as the ceramic polishing kit for CAD-CAM leucite-reinforced ceramics. Thus, using ceramic polishing systems, polishing leucite ceramics is recommended, whereas composite polishing systems should not be considered as an alternative for use in minimally invasive dentistry.
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Hirvonen, Ari T., Yoo Yamamoto, Tohru Sekino, Roman Nowak, and Koichi Niihara. "Fabrication and Characterization of Zirconia-Based New Ceramic Composites for Thermal Barrier Coatings." Key Engineering Materials 317-318 (August 2006): 597–600. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.597.
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Ceramic nanocomposites became nowadays an important ingredient of many structural and electronic ceramics, as well as ceramic coatings. The same applies to chemically processed and environmental related ceramics. The performance and characteristics of ceramic components are considerably influenced by the characteristics of precursor powder. The outstanding properties possessed by advanced nanoceramics are achieved through exceptional composition and microstructure that require very careful control throughout the successive stages of the applied processing.
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Li, Xue, and Xiaobing Hu. "Current Status of Ceramic Industry and VR Technology Used in Ceramic Display and Dissemination." Scientific Programming 2021 (October 26, 2021): 1–8. http://dx.doi.org/10.1155/2021/7555550.
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With the deepening of reform and opening up, the development of China’s ceramic industry has been rapidly improved, leading the world, and various ceramic varieties have also been greatly developed. However, as the growth rate of the global economy has gradually slowed down and structural imbalances have become more obvious, China’s economy has gradually entered a new development trend. In the context of supply-side structural reforms, the severe macroenvironment and policy pressure to eliminate backward production capacity have further promoted the development of China’s ceramic industry to face greater challenges. In the context of the rapid development of various high-tech technologies such as “Internet +” and intelligent manufacturing, this paper discusses the use of VR technology in the design of ceramics from the principles and characteristics of ceramic design and, according to the characteristics of virtual design of ceramics, demonstrates the feasibility of its shape, decoration, color matching, and so on. The ceramics are classified according to their use functions, and the characteristics of different types of virtual display of ceramics and their suitable virtual display methods are discussed. Finally, this paper combines panoramic image display technology and graphic VR display technology to create the best virtual display method suitable for different types of ceramic products, implements the interactive design in virtual software, and then performs virtual display.
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Ozkanli, Nilufer Nazende. "Position paper mixed ceramic and porcelain on mud example applications." New Trends and Issues Proceedings on Humanities and Social Sciences 5, no. 6 (September 14, 2018): 34–44. http://dx.doi.org/10.18844/prosoc.v5i6.3693.
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It has been observed that organic or inorganic materials such as grass, straw, fibrous plants, plant roots and mineral additives have been added to the ceramic bodies in order to be stronger throughout history. The use of paper as an additive material. It is known that in the past years, a mixture called ‘Papier Mache’ in India has been used in papermaking in ceramics. Nowadays, many ceramic artists use paper additives in their artistic applications. Cellulosic fibres are a ceramics body since it prevents creaking of the ceramic during the course of drying of the ceramic due to its binding properties when mixed with clay as well as its lightness after firing. In this study, the use of the paper additive in kaolin, some sample applications and samples from artist works have been presented.Keywords: Porcelain, artistic ceramic, paper additive ceramic.
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Ndukwe, Agha Inya, Chukwuma Daniel Okolo, and Benjamin Uchenna Nwadirichi. "Overview of corrosion behaviour of ceramic materials in molten salt environments." Zastita Materijala 65, no. 2 (June 15, 2024): 202–12. http://dx.doi.org/10.62638/zasmat1128.
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This study reviewed previous studies between the years 2015 and 2021 on how ceramic materials degraded in the presence of molten salt environments. The processes of corrosion resistance of various ceramic compositions subjected to various molten salt compositions and temperatures were also scrutinized. The results offer important new insights into the variables affecting ceramics' corrosion behaviour and the production of corrosion products. The reported result reveals that the ceramic material with the composition (Sm0.5Sc0.5)2Zr2O7 performed better than that of Sm2Zr2O7 in terms of hot corrosion resistance in molten salt (V2O5 + Na2SO4). It has also been reported that corrosion behaviour is influenced by particle size. Notably, zirconia (n-YSZ) with nanoscale grain sizes was more susceptible to hot corrosion, which was explained by increased specific surface areas. On the other hand, sintering and additives have been found to enhance corrosion resistance. The Y-Y2Si2O7 ceramic's resistance to corrosion in (V2O5 + Na2SO4) molten salt was enhanced by the addition of alumina. The results of these investigations help us understand how corrosion works and what influences ceramic materials' susceptibility to deterioration in molten salt media. This information can direct the creation of more corrosive-resistant ceramic materials for use in high-temperature environments or molten salt-based energy systems, among other corrosive uses.
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Srivastava, Aaditya Ranjan, Shrish Bajpai, and Sushant Khare. "Current Scenario of Ceramic Engineering Education in India." Comparative Professional Pedagogy 8, no. 1 (March 1, 2018): 84–88. http://dx.doi.org/10.2478/rpp-2018-0011.
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AbstractHistorical overview of ceramic development has been provided in the paper. It has been stated that the trail of ceramics has been rooted in Indus valley civilization. Advancement of materials leads to afflux of development in the fields of science and technology. Present paper deals with the realm of Ceramic Engineering, mainly focuses on education and jobs in the respected fields in India. This paper also holds the framework and research work in Ceramic Engineering in India. It has been defined that the whole processing of ceramics is done in the laboratories, like refractories, ceramics white wares, fuel furnace and pyrometry etc. There are a number of jobs which are offered by government sector as well as private sector. It has been determined that ceramic engineers are able to get job opportunities in aerospace, automotive industry, building material manufacturing, chemical industries, electronics, food processing, mining, medicine and refinery sectors in India. Curricula, undergraduate and postgraduate programs in Ceramics Engineering have been characterized. The peculiarities of dual degree education in Ceramics Engineering have been described. It has been stated that there are several initiatives taken by the government for the enhancement of skills and knowledge in Ceramics Engineering, which have been discussed in the extant paper. It has been defined that a new advancement in Ceramics Engineering is the initiative for enhancement of the knowledge through video lectures, offered by a couple of institutes. The prospects of ceramics application have been analyzed. It has been stated that the momentousness of ceramics are protruding diurnally just like in sculptures designing, pottery, building constructions, sanitary & textile etc. Not only the designing field of ceramics but its use in electronics field has been covered. It has been concluded that ceramic has a great potential to give solutions to the heat absorption between the walls or contacting surfaces. Earthenware was the heretofore product of ceramics. It has been proved that the future scope of ceramic is enormous. It has also been stressed that nowadays Ceramic Engineering is one of the emerging fields in engineering education, but a very prospective one.
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Subedi, Mitra Mani. "Ceramics and its Importance." Himalayan Physics 4 (December 23, 2013): 80–82. http://dx.doi.org/10.3126/hj.v4i0.9433.
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The term "ceramic" once referred only to clay-based materials. However, new generations of ceramic materials have tremendously expanded the scope and number of possible applications. Many of these new materials have a major impact on our daily lives and on our society. Ceramics has advanced far beyond its beginnings in clay pottery. Ceramic tiles cover the space shuttle as well as our kitchen floors. Ceramic electronic devices make possible high-tech instruments for everything from medicine to entertainment. Clearly, ceramics are our window to the future.The Himalayan Physics Vol. 4, No. 4, 2013 Page: 80-82 Uploaded date: 12/23/2013