Готові списки джерел за темами / Glass-matrix composites, bioactive glasses, metal matrix composites

Добірка наукової літератури з теми "Glass-matrix composites, bioactive glasses, metal matrix composites"

Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "Glass-matrix composites, bioactive glasses, metal matrix composites"

Georgarakis, Konstantinos, Dina V. Dudina, and Vyacheslav I. Kvashnin. "Metallic Glass-Reinforced Metal Matrix Composites: Design, Interfaces and Properties." Materials 15, no. 23 (November 22, 2022): 8278. http://dx.doi.org/10.3390/ma15238278.

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When metals are modified by second-phase particles or fibers, metal matrix composites (MMCs) are formed. In general, for a given metallic matrix, reinforcements differing in their chemical nature and particle size/morphology can be suitable while providing different levels of strengthening. This article focuses on MMCs reinforced with metallic glasses and amorphous alloys, which are considered as alternatives to ceramic reinforcements. Early works on metallic glass (amorphous alloy)-reinforced MMCs were conducted in 1982–2005. In the following years, a large number of composites have been obtained and tested. Metallic glass (amorphous alloy)-reinforced MMCs have been obtained with matrices of Al and its alloys, Mg and its alloys, Ti alloys, W, Cu and its alloys, Ni, and Fe. Research has been extended to new compositions, new design approaches and fabrication methods, the chemical interaction of the metallic glass with the metal matrix, the influence of the reaction products on the properties of the composites, strengthening mechanisms, and the functional properties of the composites. These aspects are covered in the present review. Problems to be tackled in future research on metallic glass (amorphous alloy)-reinforced MMCs are also identified.

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Bernardo, E., G. Scarinci, A. Maddalena, and S. Hreglich. "Development and mechanical properties of metal–particulate glass matrix composites from recycled glasses." Composites Part A: Applied Science and Manufacturing 35, no. 1 (January 2004): 17–22. http://dx.doi.org/10.1016/j.compositesa.2003.09.022.

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Shamlaye, Karl F., Kevin J. Laws, and Michael Ferry. "Fabrication of Bulk Metallic Glass Composites at Low Processing Temperatures." Materials Science Forum 773-774 (November 2013): 461–65. http://dx.doi.org/10.4028/www.scientific.net/msf.773-774.461.

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Bulk metallic glasses (BMGs) are amorphous alloys that exhibit unique mechanical properties such as high strength due to their liquid-like structure in the vitreous solid state. While they usually exhibit low ductility, they can be toughened by incorporating secondary phase particles within the amorphous matrix via composite fabrication to generate amorphous metal matrix composites (MMCs). Traditional MMCs are fabricated at high temperature in the liquid state with tedious blending processes. This high temperature processing route often leads to unwanted reactions at the reinforcement/matrix interface, creating brittle intermetallic by-products and damaging the reinforcement. In the present work, novel bulk metallic glass composites (BMGCs) were fabricated at low processing temperatures via thermoplastic forming (TPF) above the glass transition temperature of the amorphous matrix. Here, the unique thermophysical features of the matrix material allow for TPF of composites in non-sacrificial moulds incorporating various types of reinforcement, via processing in the solid state at low temperatures (less than 200 °C), within a short timeframe (less than 10 minutes); this avoids the formation of brittle phases at the reinforcement/matrix interface leading to efficient bonding between particles and matrix, thereby creating a tough, low density composite material.

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Lyyra, Inari, Katri Leino, Terttu Hukka, Markus Hannula, Minna Kellomäki, and Jonathan Massera. "Impact of Glass Composition on Hydrolytic Degradation of Polylactide/Bioactive Glass Composites." Materials 14, no. 3 (February 1, 2021): 667. http://dx.doi.org/10.3390/ma14030667.

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Understanding the degradation of a composite material is crucial for tailoring its properties based on the foreseen application. In this study, poly-L,DL-lactide 70/30 (PLA70) was compounded with silicate or phosphate bioactive glass (Si-BaG and P-BaG, respectively). The composite processing was carried out without excessive thermal degradation of the polymer and resulted in porous composites with lower mechanical properties than PLA70. The loss in mechanical properties was associated with glass content rather than the glass composition. The degradation of the composites was studied for 40 weeks in Tris buffer solution Adding Si-BaG to PLA70 accelerated the polymer degradation in vitro more than adding P-BaG, despite the higher reactivity of the P-BaG. All the composites exhibited a decrease in mechanical properties and increased hydrophilicity during hydrolysis compared to the PLA70. Both glasses dissolved through the polymer matrix with a linear, predictable release rate of ions. Most of the P-BaG had dissolved before 20 weeks in vitro, while there was still Si-BaG left after 40 weeks. This study introduces new polymer/bioactive glass composites with tailorable mechanical properties and ion release for bone regeneration and fixation applications.

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Castro, Moara M., Debora R. Lopes, Renata B. Soares, Diogo M. M. dos Santos, Eduardo H. M. Nunes, Vanessa F. C. Lins, Pedro Henrique R. Pereira, Augusta Isaac, Terence G. Langdon, and Roberto B. Figueiredo. "Magnesium-Based Bioactive Composites Processed at Room Temperature." Materials 12, no. 16 (August 16, 2019): 2609. http://dx.doi.org/10.3390/ma12162609.

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Hydroxyapatite and bioactive glass particles were added to pure magnesium and an AZ91 magnesium alloy and then consolidated into disc-shaped samples at room temperature using high-pressure torsion (HPT). The bioactive particles appeared well-dispersed in the metal matrix after multiple turns of HPT. Full consolidation was attained using pure magnesium, but the center of the AZ91 disc failed to fully consolidate even after 50 turns. The magnesium-hydroxyapatite composite displayed an ultimate tensile strength above 150 MPa, high cell viability, and a decreasing rate of corrosion during immersion in Hank’s solution. The composites produced with bioactive glass particles exhibited the formation of calcium phosphate after 2 h of immersion in Hank’s solution and there was rapid corrosion in these materials.

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Lichtenberg, Klaudia, and Kay André Weidenmann. "Mechanical Properties of AlSi12-Based Metal Matrix Composites with Layered Metallic Glass Ribbons." Key Engineering Materials 742 (July 2017): 181–88. http://dx.doi.org/10.4028/www.scientific.net/kem.742.181.

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During the last years, several studies proved the high potential of metallic glasses to be used as reinforcements in lightweight alloys. Thereby, focus was mostly on particle reinforced composites or three-dimensional and omnidirectional glass arrays within the composite. Using a specific layered structure of the entire ribbons as reinforcement to design direction-dependent tailored properties is a novel approach. The composites in this study were produced by gas pressure infiltration of a layered stack of metallic glass ribbons. Ribbons of the metallic glass Ni60Nb20Ta20 were used as reinforcements and aluminum alloy AlSi12 as matrix. Mechanical tests like four point bending and tensile tests as well as elastic analysis using ultrasound phase spectroscopy (UPS) were performed to classify composite’s properties. Further, micro computed tomography (µCT) analysis and metallographic investigations were carried out on the four point bending samples after testing to reveal occurring damage mechanisms.

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Roy, S., and D. Chakravorty. "Electrical conduction in composites of nanosized iron particles and oxide glasses." Journal of Materials Research 9, no. 9 (September 1994): 2314–18. http://dx.doi.org/10.1557/jmr.1994.2314.

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Nanocomposites involving iron particles in silica glass matrix have been synthesized by the hot pressing of suitably reduced precursor gel powders. The metal particles have diameters in the range 3.8 to 10.2 nm. An almost four orders of magnitude resistivity range at room temperature has been obtained by such changes in particle diameters. The resistivity in the temperature range 200-340 K shows a fractional temperature dependence with an average value of n ∼ 0.69. The resistivity changes in this temperature region can be explained on the basis of an electron tunneling mechanism.

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Bellucci, Devis, Roberta Salvatori, Jessica Giannatiempo, Alexandre Anesi, Sergio Bortolini, and Valeria Cannillo. "A New Bioactive Glass/Collagen Hybrid Composite for Applications in Dentistry." Materials 12, no. 13 (June 28, 2019): 2079. http://dx.doi.org/10.3390/ma12132079.

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Bioactive glasses (BGs) are currently employed in a wide range of medical and dentistry applications by virtue of their bone-bonding ability. The incorporation of BGs into a collagen matrix may be used to combine the regenerative potential of these materials with the specific biological advantages of collagen. However, most of the collagen/BG composites reported in the literature are scaffolds and there is a lack of moldable putties or injectable systems. Here, granules of an innovative BG containing strontium and magnesium were mixed with collagen and PEG to obtain a putty (BGMS/C) suitable for dental applications. For the sake of comparison, granules of 45S5 Bioglass®, the gold standard among BGs, were used to prepare a 45S5/collagen putty. Both the composites were evaluated in vitro with respect to murine fibroblasts. The materials showed an excellent biocompatibility, making them interesting for possible applications in dentistry and reconstructive surgery. Moreover, BGMS/C seems to stimulate cell proliferation.

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Sergi, Rachele, Devis Bellucci, Roberta Salvatori, and Valeria Cannillo. "Chitosan-Based Bioactive Glass Gauze: Microstructural Properties, In Vitro Bioactivity, and Biological Tests." Materials 13, no. 12 (June 23, 2020): 2819. http://dx.doi.org/10.3390/ma13122819.

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Passive commercial gauzes were turned into interactive wound dressings by impregnating them with a chitosan suspension. To further improve healing, and cell adhesion and proliferation, chitosan/bioactive glass wound dressings were produced with the addition of (i) 45S5, (ii) a Sr- and Mg-containing bioactive glass, and (iii) a Zn-containing bioactive glass to the chitosan suspension. SEM and FTIR analyses evidenced positive results in terms of incorporation of bioactive glass particles. Bioactivity was investigated by soaking chitosan-based bioactive glass wound dressings in simulated body fluid (SBF). Cell viability, proliferation, and morphology were investigated using NIH 3T3 (mouse embryonic fibroblast) cells by neutral red (NR) uptake and MTT assays. Furthermore, the wound-healing rate was evaluated by means of the scratch test, using NIH 3T3. The results showed that bioactive glass particles enhance cell adhesion and proliferation, and wound healing compared to pure chitosan. Therefore, chitosan-based bioactive glass wound dressings combine the properties of the organic matrix with the specific biological characteristics of bioactive glasses to achieve chitosan composites suitable for healing devices.

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Barroca, N. B., A. L. Daniel-da-Silva, M. H. V. Fernandes, and P. M. Vilarinho. "Porogen Effect of Bioactive Glass on Poly(L-lactide) Scaffolds: Evidences by Electron Microscopy." Microscopy and Microanalysis 14, S3 (September 2008): 65–66. http://dx.doi.org/10.1017/s143192760808940x.

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Recently, porous polymer-ceramic composites have been developed and represent promising scaffolds to be used as synthetic extracellular matrix in bone tissue engineering since they combine the advantages of these two types of materials. On the other hand bioactive glasses (BG) have been used as ceramic fillers to promote bioactivity and to enhance mechanical properties and osteoblast functions. Among all the requirements, these 3D porous structures should have a controllable average pore size larger than 100 μm as well as good pore interconnectivity to allow vascularization and tissue ingrowth. The goal of this study is to investigate the effect of the addition of a bioactive glass on the porous structure development of the scaffolds prepared by thermally induced phase-separation and also to test the bioactivity of these composite scaffolds. Poly (L-lactic) acid (PLLA) was chosen as the polymer matrix because of its well-known biocompatibility and adjustable physical and mechanical properties. Micron-sized (<10 μm) glass from the 3CaO.P2O5-MgO-SiO2 system was produced in our laboratory and used as the bioactive ceramic filler.

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Більше джерел

Частини книг з теми "Glass-matrix composites, bioactive glasses, metal matrix composites"

Reis, R. L., A. M. Cunha, M. H. Fernandes, and R. N. Correia. "Bionert and biodegradable polymeric matrix composites filled with bioactive SiO2−3CaO·P2O5−MgO glasses and glass-ceramics." In Bioceramics, 415–18. Elsevier, 1997. http://dx.doi.org/10.1016/b978-008042692-1/50099-6.

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