Articles de revues : « Anti-Abrasion »

1

Yao, Hai Bin, Xiang Zhang, Wen Ming You, Yong Sheng Li et Lu Ming Mao. « A Repair Technology of Anti-Cavitation and Anti-Abrasion on Water Pump Impeller ». Advanced Materials Research 651 (janvier 2013) : 389–95. http://dx.doi.org/10.4028/www.scientific.net/amr.651.389.

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In this paper, some common repair schemes of anti-cavitation and anti-abrasion on water pump impeller are compared. The method of repair welding is firstly applied to repair the corrosion perforation on the impeller, and then Belzona polymer material is applied to paint the impeller. After using for a long time, it is confirmed that the coating of this technology is qualified with good anti-cavitation and anti-abrasion ability, which can save energy, reduce consumption and also has obvious economic benefits.

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Guo, Jinjun, Minghao Gao, Kun Wang et Peng Zhang. « Mechanisms and influential variables on the abrasion resistance hydraulic concrete ». Nanotechnology Reviews 11, n^o 1 (1 janvier 2022) : 2997–3019. http://dx.doi.org/10.1515/ntrev-2022-0488.

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Abstract Abrasion damage is inevitable for hydraulic structure concrete, to increase the service life of large water conservancies and to keep them running safely and reliably, hydraulic concrete requires a high abrasion resistance. This review synthesizes current practices defined by scientific literature in a format focused on allowing quick comparison and understanding of the current scenario of anti-abrasion concrete enhancing mechanism, measuring methods, and approaches to enhance concrete abrasion resistance. Besides, the review highlights the application of widely used materials and potential materials application, like silica fume and fibers which are mature research at present, and effective but preliminary used materials like nanoparticles, to better understand the development of higher abrasion resistance of concrete. According to the present research, it indicate that incorporating enhancement materials into concrete to achieve better abrasion resistance are basically through the way of hardening cement paste, controlling internal crack propagation, or using stronger coarse aggregate to enhance its ability for anti-abrasive. Finally, based on the systematic literature review, a discussion on major areas holding the significant potential to improve current practices is presented and practical recommendations are provided to advance toward more direct and optimized methods.

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Jiang, Chao Hua, T. J. McCarthy, D. Chen et Q. Q. Dong. « Study on the Bond and Anti-Abrasion Performance of Repair Materials for Hydraulic Concrete ». Key Engineering Materials 426-427 (janvier 2010) : 403–8. http://dx.doi.org/10.4028/www.scientific.net/kem.426-427.403.

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The bond and anti-abrasion performance of repair materials are the key factors for successful repair of hydraulic concrete. Acrylic acid emulsion (AAE) mortar, silica fume (SF) mortar, high strength (HS) mortar, polypropylene (PP) fiber mortar and basalt fiber (BF) mortar were prepared and their direct tensile bond strength, splitting tensile bond strength, abrasion resistance and SEM analysis of bond interface are studied in this paper. The results show that the highest direct tensile bond strength was recorded for fiber mortar. But compared to homogenous specimen’s tensile strength, AAE mortar showed the highest direct tensile bond strength. The anti-abrasion properties of repair mortars were tested with decreasing performance recorded in the following order: PP fiber mortar, SF mortar, BF mortar, HS mortar and AAE mortar. Compared with the HS mortar without fiber, the wear rate of PP fiber mortar was decreased by 29.2 % and the anti-abrasion strength was increased by 37.7%. This shows that adding fiber can greatly improve the anti-abrasion property. SEM analysis showed that addition of PP fiber and BF into repair mortar did not change the type of hydrates. The interface of AAE mortar was level and dense. The bond interface of SF mortar was uniform without big porosity. Addition of super plasticizer, the bond interface of HS mortar presented a large quantity of fibrous the CSH gel and less porosity which could improve the mortar bond effect effectively.

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Fan, Wen Jie, Fang Liu et Hong Zhan Guo. « Mechanism of the Effect of Interface Structure on the Abrasion Performance of Polycrystalline Diamond Compact ». Advanced Materials Research 230-232 (mai 2011) : 669–73. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.669.

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Abrasion performance is an important performance parameter of polycrystalline diamond compact. This paper focuses on the research for test method of PDC abrasion performance. With the improvement method, the abrasion performance of PDC with five typical macroscopic interface structure such as planar structure, v-groove, u-groove, ring groove, ring claw-tooth are tested at normal temperature and after heating, With SEM, we study on its mechanism of abrasion performance due to different macroscopic interfaces structure, analyze the reason why PDC abrasion performance is different with the changing of PDC macroscopic interface structure. The research result shows that the temperature influenced the wear property and the anti-impact property of PDC obviously. In the same technological conditions, the interfacial structure of the PDC layer and WC-Co substrate has little influence on the abrasion performance, and the diamond and grains can sinter better, causing the excellent abrasion performance of PDC.

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Lange, Katja, Charlotte Pfau, Erik Grunwald, Matthias Schak, Eric Matthes, Stefan Grob, Marko Turek, Christian Hagendorf et Klemens Ilse. « Abrasion testing of anti-reflective coatings under various conditions ». Solar Energy Materials and Solar Cells 240 (juin 2022) : 111732. http://dx.doi.org/10.1016/j.solmat.2022.111732.

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Pang, Youxia. « ANALYSIS OF THERMAL MICROSTRESSES OF ANTI-ABRASION ADHESION COATING ». Chinese Journal of Mechanical Engineering 36, n^o 06 (2000) : 99. http://dx.doi.org/10.3901/jme.2000.06.099.

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Kuru, Serdar, Osman Bahadir Bozkirli, Aziz Mutlu Barlas, Mehmet Esat Duymus, Mehmet Senes, Nihat Yumusak, Cevdet Yilmaz et Kemal Kismet. « The Preventive Effect of Dexmedetomidine Against Postoperative Intra-abdominal Adhesions in Rats ». International Surgery 100, n^o 1 (1 janvier 2015) : 87–95. http://dx.doi.org/10.9738/intsurg-d-14-00184.1.

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Abstract This study aimed to determine the possible preventive effects of dexmedetomidine on postoperative intra-abdominal adhesions. Dexmedetomidine is a highly selective and potent α2 adrenergic agonist with sedative, analgesic, anxiolytic, sympatholytic, hemodynamic, and diuretic properties. In recent years, investigations have shown that dexmedetomidine possesses secondary antioxidant and also anti-inflammatory effects. Thirty Wistar albino male rats were randomized and divided into 3 groups of 10 animals each: group 1, sham-operated; group 2, cecal abrasion + peritoneal dissection; group 3, cecal abrasion + peritoneal dissection followed by daily intravenous injection of 10 μg/kg dexmedetomidine for 10 days. The animals were killed on postoperative day 21. Blood and cecal samples were taken for biochemical and histopathologic evaluation. In this study, biochemical and pathologic parameters were significantly better in the cecal abrasion + peritoneal dissection + dexmedetomidine group when compared with the cecal abrasion + peritoneal dissection group. Tissue malondialdehyde, myeloperoxidase, total sulfhydryl, and catalase were found to be significantly different between the cecal abrasion/peritoneal dissection + dexmedetomidine and the cecal abrasion/peritoneal dissection groups. Plasma malondialdehyde and total sulfhydryl values were also statistically different between these groups (P < 0.05). Statistical analyses of mean pathologic scores showed that the histopathologic damage in the cecal abrasion/peritoneal dissection + dexmedetomidine group was significantly less than the damage in the control group (P < 0.05 for all pathologic parameters). The results of this study show that dexmedetomidine had a significant preventive effect on postoperative intra-abdominal adhesions. We concluded that these effects might be due to antioxidant and anti-inflammatory activities.

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Wang, Huixin, Jian Zhuang, Jiangtao Yu, Hongyan Qi, Yunhai Ma, Hubiao Wang et Zhijun Guo. « Fabrication of Anti-Reflective Surface with Superhydrophobicity/High Oleophobicity and Enhanced Mechanical Durability via Nanosecond Laser Surface Texturing ». Materials 13, n^o 24 (13 décembre 2020) : 5691. http://dx.doi.org/10.3390/ma13245691.

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In this work, anti-reflective surface with superhydrophobicity/oleophobicity and enhanced abrasion resistance was fabricated on steel alloy surface. Two different surface patterns (i.e., parallel microgrooves and spot arrays) were created by nanosecond laser ablation and chemical immersion. The surface micro/nanostructure, spectral reflectance, wettability, and abrasion resistance of all the samples were determined. The experimental results showed that the laser-chemical treated surfaces exhibited much lower spectral reflectance and significantly enhanced surface integrities compared with the untreated surface. Firstly, the contact angles of water, glycerol, and engine oil on the laser-chemical treated surfaces were increased up to 158.9°, 157.2°, and 130.0° respectively, meaning the laser-chemical treated surfaces achieved both superhydrophobicity and high oleophobicity. Secondly, the laser-chemical treated surface showed enhanced abrasion resistance. The experimental results indicated that the spectral reflectance of the laser-chemical treated surfaces remained almost unchanged, while the laser-chemical treated surface patterned with parallel microgrooves sustained superhydrophobicity with a water contact angle of 150.2° even after more than one hundred abrasion cycles, demonstrating the superior mechanical durability. Overall, this fabrication method has shown its effectiveness for fabrication of multifunctional metal surface integrating the surface functionalities of anti-reflectivity, superhydrophobicity/high oleophobicity, and enhanced abrasion resistance.

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Fang, Duoxun, Adham Al-akhali, Molin Cao, Jiahao Liu et Zhengqiang Tang. « Robust Superhydrophilic/Underwater Superoleophobic Surface with Anti-Abrasion and Anti-Corrosion Performances Based on Laser Ablation ». Coatings 13, n^o 6 (17 juin 2023) : 1118. http://dx.doi.org/10.3390/coatings13061118.

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Preparing underwater superoleophobic surface is an effective method to solve the problems of oil adhesion on the underwater surfaces and oil spill in water. However, the underwater superoleophobic surfaces at present are not reliable in practical application due to their poor stability under corrosion and abrasion. Herein, we proposed a facile method to fabricate a robust superhydrophilic/underwater superoleophobic surface. The surface is combined with micro honeycomb frame structure and nanostructure, which was fabricated by laser ablation. The surface with the honeycomb pattern shows strong hydrophilicity with a water contact angle of 0° and stable underwater oil repellency with an underwater oil contact angle of 164.9°. Furthermore, it can maintain its excellent underwater superoleophobic performance after 120 cycles of abrasion and corrosion of 6 h at pH = 1–14.

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Li, Zongmei, et Xin Su. « Safety Monitoring Network Architecture of Water Release Structures Based on Intelligent Sensing Equipment for Concrete Abrasion ». Journal of Sensors 2022 (30 septembre 2022) : 1–10. http://dx.doi.org/10.1155/2022/1818646.

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The concrete abrasion monitoring of water launch constructions is the key and hard factor in hydraulic engineering. With the development of technology, the present concrete abrasion monitoring techniques have made excellent progress; however, there are still some problems, such as the small monitoring range, and it is hard to totally mirror the diploma of abrasion damage. The smart sensing tools based totally on concrete abrasion is greater and extra used in engineering dimension due to the fact of its excessive precision and robust anti-interference ability. Based on the alive analysis accessory for accurate abrasion, this cardboard establishes the aegis ecology association anatomy of baptize barrage structures, selects the abstinent chafe advice of the project, incorporates out coaching modelling thru the education set, and forecasts the take a look at set. Through theoretical evaluation and accuracy verification test, it can be concluded that the smart sensing tools based totally on concrete abrasion can be used to measure the floor modifications of concrete materials, the size accuracy can attain 0.1 mm level, and the monitoring accuracy price can attain 95%, which can meet the necessities of concrete abrasion depth monitoring in hydraulic engineering.

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Yang, Dongxu, Yong You, Wanyu Zhao, Hai Huang, Hao Sun et Yang Liu. « Abrasion Behavior and Anti-Wear Measures of Debris Flow Drainage Channel with Large Gradient ». Water 12, n^o 7 (29 juin 2020) : 1868. http://dx.doi.org/10.3390/w12071868.

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Debris flow gullies have high potential energy and geomorphic characteristics including a steep longitudinal slope and abundant loose material sources. They often experience debris flow with a strong impact force and a large instantaneous flow. Drainage engineering measures are most commonly used for mitigation in these gullies. However, the abrasion of drainage channels with large gradients (DCLG) is complex and strong because of the high-speed flushing of debris. In this study, the abrasion behavior of debris flow in DCLG is analyzed based on the kinematic characteristics and the theory of composite abrasive wear. Energy dissipation and anti-wear measures are suggested, and their effects are summarized with reference to a case study and in situ observation. The results show that there are four main types of wear morphology in drainage channels. The abrasion system of drainage channels shows the characteristics of system dependency, time dependency and multidisciplinary coupling. Energy dissipation and anti-wear measures include prefabricated reinforced concrete boxes as substrate, transverse roughening belts, adding a wear-resistant admixture, etc. The flow velocity of the debris flow is reduced by 5.7–37.1% after passing through the energy dissipation section. The distribution of abrasion and the mud depth show that the variation trend of the flow velocity in the channel is ”acceleration → deceleration → reacceleration“. According to tracking observations during two flood seasons, the energy dissipation and anti-wear measures are the most effective.

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Sun, Hong Fei, Can Ming Wang, Qiang Song et Qiong Qiong Yan. « Research on High Temperature Anti-Abrasion Protection Technology of Thermocouple Cannula ». Key Engineering Materials 353-358 (septembre 2007) : 1765–68. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1765.

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Abrasion mechanism of thermocouple cannula is studied in this article. For different working position and condition, different material should be selected to ensure the working characteristics of thermocouple cannula. Several protection methods were introduced to prolong the sevice life of thermocouple cannula. 1. M-Al series intermetallic compound coating protection method. 2. Metal/ceramic compound coating protection method. 3. Development of new abrasion-resisting material for high temperature according to some special work conditions of thermocouple cannula. With the adoption of those new technologies, thermocouple cannula’s service life can be prolonged to 3~5 times of that untreated.

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Cao, Xiangkang, Guangyi Cai, Yicong Wang, Jinglong Pan, Xinxin Zhang et Zehua Dong. « Bio-inspired polybenzoxazine coating : Anti-corrosion and anti-abrasion performance enhancement through monomer design ». Progress in Organic Coatings 174 (janvier 2023) : 107283. http://dx.doi.org/10.1016/j.porgcoat.2022.107283.

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Wang, Zhide, Jing Li, Yan Wang et Zhiyong Wang. « An EIS analysis on corrosion resistance of anti-abrasion coating ». Surfaces and Interfaces 6 (mars 2017) : 33–39. http://dx.doi.org/10.1016/j.surfin.2016.11.003.

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Righeira Carnegie, M., A. Sherine, D. Sivagami et S. Sakthivel. « Anti-reflection coatings with enhanced abrasion and scratch resistance properties ». Journal of Sol-Gel Science and Technology 78, n^o 1 (22 décembre 2015) : 176–86. http://dx.doi.org/10.1007/s10971-015-3924-9.

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Sebastian, Divine, Chun-Wei Yao et Ian Lian. « Abrasion Resistance of Superhydrophobic Coatings on Aluminum Using PDMS/SiO2 ». Coatings 8, n^o 11 (21 novembre 2018) : 414. http://dx.doi.org/10.3390/coatings8110414.

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Superhydrophobic coatings have shown tremendous improvement in the usability of metals such as aluminum. These coatings are capable of adding attractive features such as self-cleaning, anti-corrosion, and anti-biofouling to the array of diverse features that aluminum possesses, including lightweight and high ductility. For superhydrophobic surfaces, having considerable abrasion resistance is as important as achieving a high contact angle. In this work, two types of coatings have been prepared, each composed of functionalized silica nanoparticles along with polydimethylsiloxane (PDMS) dispersed in ethanol, and their superhydrophobicity and abrasion characteristics have been investigated. The same silica nanoparticles are present in each coating, but each has a different proportion of the PDMS base to its curing agent. The surface morphology of the coatings was studied with the aid of a scanning electron microscope (SEM) and an atomic force microscope (AFM). The surface chemical composition was characterized using an energy dispersive X-ray spectroscope (EDX). The prepared coatings were analyzed for their degree of superhydrophobicity, abrasion resistance and adhesion characteristics. In addition, atomic force microscopy was used to understand the adhesion characteristics of the coatings.

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Passos, Thais Andrezza, Henara Costa, Felipe Kevin Correa Luz et Giuseppe Pintaude. « The Effect of the Dilution Level on Microstructure and Wear Resistance of Fe-Cr-CV Hardfacing Coatings Deposited by PTA-P ». Coatings 12, n^o 12 (27 novembre 2022) : 1835. http://dx.doi.org/10.3390/coatings12121835.

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Soil preparation tools are subject to severe abrasion. The wear resistance of various industrial components can be improved using the hardfacing technique. The improvement in hardfacing wear resistance depends on the microstructure, i.e., the chemical composition of the alloys, the method of overlay, and the parameters of the selected process. The Plasma Transferred Arc with Powder (PTA-P) welding process is interesting as a hardfacing technique since it promotes very low dilution of the substrate in the coating. In this article, the PTA-P welding process was used for the deposition of Fe-Cr-C-based hard coatings with the addition of vanadium onto cheap and relatively soft low-carbon steel substrates. Rubber-wheel abrasion tests were performed to compare the abrasion resistance between commercial anti-wear steel and weld-deposited Fe-Cr-C-V hard coatings. In addition, the microstructure, dilution, and wear mechanisms were investigated. The dilution of the coatings affected the microstructure, in particular, the free mean path of the vanadium carbides, but it only affected abrasion resistance when the wear mechanism involved rolling abrasion. The deposited coatings proved to be at least three times stronger than a commercial abrasion-resistant steel due to the distribution and morphology of the vanadium carbides formed in the coatings.

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Shi, Jiakun, Bizhu Zhang, Xin Zhou, Runxian Liu, Jun Hu, Huaan Zheng et Zhong Chen. « An Abrasion Resistant TPU/SH-SiO2 Superhydrophobic Coating for Anti-Icing and Anti-Corrosion Applications ». Journal of Renewable Materials 10, n^o 5 (2022) : 1239–55. http://dx.doi.org/10.32604/jrm.2022.018045.

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Cheng, Yuanyuan, Shixiang Lu, Wenguo Xu et Hong Tao. « Fabrication of Cu–CuO–Fe2O3/Fe anti-sticky and superhydrophobic surfaces on an iron substrate with mechanical abrasion resistance and corrosion resistance ». New Journal of Chemistry 41, n^o 12 (2017) : 5205–14. http://dx.doi.org/10.1039/c7nj00658f.

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Duan, Weidang, Tao Liu, Qiuping Li, Jian Xu, Jialin Zhang, Yongchun Qin, Jie Wang et Rong Chang. « Evaluation and Technical Requirements of the Initial Anti-Wear Performance of an Emulsified Asphalt Cold Recycled Mixture : A Case Study in Northern China ». Sustainability 14, n^o 22 (21 novembre 2022) : 15469. http://dx.doi.org/10.3390/su142215469.

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Considering the initial strength evaluation method of a cold recycled asphalt emulsified mixture, the abrasion test was selected as the evaluation method. The comparison test was designed to determine the key parameters of the test, including the molding method, the curing temperature, the curing relative humidity, and the curing time. The influence of different emulsifiers, the emulsifier dosage, the asphalt dosage, the cement dosage, and the mineral aggregate gradation on the initial anti-wear performance of the mixture was analyzed. The technical requirements for the emulsified asphalt cold recycled mixture were put forward. We analyzed the significance of different influencing factors using analysis of variance. The results shows that the abrasion test is simple and reliable. It can be used to evaluate the initial abrasion resistance of the emulsified asphalt cold recycled mixture. The curing conditions had a great impact on the abrasion loss. With the increase in temperature or the extension of the curing time, the abrasion loss gradually decreased. With the increase in relative humidity, the abrasion loss gradually increased. The testing protocols, namely 25 °C with a relative humidity of 70%, the curing time was 4 h, followed an active Chinese standard (JTG/T 5521). The results indicate that the factors that affect the initial performance of the cold reclaimed mixture of emulsified asphalt are in the following order: cement dosage, cement strength grade, emulsifier type, mineral aggregate gradation, emulsified asphalt dosage, mixture moisture content, and emulsifier dosage. The cement dosage, emulsifier type, and mineral aggregate gradation had significant effects on the initial strength of the cold recycled mixture. An abrasion loss of less than 3.5% was selected as the basis for optimizing the design of the emulsified asphalt cold recycled mixture.

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Wang, Peng, Yongchun Qin, Jian Xu, Wei Huang et Guoli Feng. « Evaluation of Anti-Abrasion Performance for High-Performance Micro Surfacing Mixture ». Journal of Physics : Conference Series 1972, n^o 1 (1 juillet 2021) : 012136. http://dx.doi.org/10.1088/1742-6596/1972/1/012136.

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Tong, Jin, Mohammad Almagzoub Mohammad Almobarak, Yunhai Ma, Wei Ye et Sen Zheng. « Biomimetic Anti-Abrasion Surfaces of a Cone Form Component Against Soil ». Journal of Bionic Engineering 7, S4 (décembre 2010) : S36—S42. http://dx.doi.org/10.1016/s1672-6529(09)60215-8.

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Zhang, Dongjiu, Guoqing Wu, Hong Li, Yan Cui et Yongming Zhang. « Superamphiphobic surfaces with robust self-cleaning, abrasion resistance and anti-corrosion ». Chemical Engineering Journal 406 (février 2021) : 126753. http://dx.doi.org/10.1016/j.cej.2020.126753.

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Pan, Siwei, Qing Hu, Yaohong Zhao, Qing Wang, Yuanyuan Li, Yihua Qian et Chunqing He. « Fabrication of a Fluorocarbon Low Surface Energy Coating for Anti-Stain Applications ». Materials 16, n^o 24 (5 décembre 2023) : 7516. http://dx.doi.org/10.3390/ma16247516.

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In the long-term working state, stains such as dust, oil, and charged particles in the environment are prone to deposit on the surface of the power equipment, which has great security risks. To achieve anti-stain performance, fluorocarbon composite coating with a low surface energy was prepared and studied. In this paper, SiO2 nanoparticles were used as inorganic fillers and fluorocarbon resin was used as the substrate to form anti-stain coatings. By adjusting and optimizing the ratio of fillers and organic resins, coatings with different static contact angles were constructed. The optimum composite coating has a contact angle of 151 ± 2° and a surface energy of 9.6 mJ/m2. After high-temperature treatment (up to 200 °C), immersion in corrosive solutions (pH 3–11), and sandpaper abrasion (after 5 abrasion cycles), the coating has been proven to show good thermal, chemical and mechanical stability. Our study provides significant research and market opportunities for the anti-stain application of the fluorocarbon composite coating on power equipment.

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SONAR, MISS RUCHITA. « Behaviour of Steel Fiber Reinforced Concrete in Deep Beam for Flexure ». INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, n^o 04 (26 avril 2024) : 1–5. http://dx.doi.org/10.55041/ijsrem31558.

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Use of deep beam in construction field saves money as well as increase the strength of structure. Reinforced concrete deep beams have very useful structural application such as piles-caps, water tanks and tall buildings. Addition of steel fibers gives good results to both load carrying capacity and increase the flexural strength of the deep beam. Steel fiber is kind of newly developed reinforced material for concrete widely adopted globally now a day, which features good performance in anti-crack, pressure resistance, anti-abrasion bending toughness, affinity with concrete, reinforcement for construction element compjonent and lengthy service life. Thus by using the steel fiber reinforced deep beam with varying percentage of steel fibers increases the first crack load and the ultimate load which gives the high flexural strength to the structure and achieves economy. This paper includes study of behaviour of steel fiber reinforced concrete in deep beam with advantages, disadvantages, properties of steel fiber etc. Keywords: Steel Fiber, Beam, Anti-Abrasion Bending Toughness, Affinity, Reinforcement

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Liu, Xingyu, Lili Xu, Shuaisheng Zhao, Haoxuan Hua, Yifan Su, Xinquan Yu, Jinlei Wang, Gang Li et Youfa Zhang. « Correction : Double cross-linked transparent superhydrophilic coating capable of anti-fogging even after abrasion and boiling ». RSC Advances 13, n^o 36 (2023) : 25578. http://dx.doi.org/10.1039/d3ra90080k.

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Correction for ‘Double cross-linked transparent superhydrophilic coating capable of anti-fogging even after abrasion and boiling’ by Xingyu Liu et al., RSC Adv., 2023, 13, 23409–23418, https://doi.org/10.1039/D3RA03113F.

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Chen, Li Na, Fan Rong Kong et Rui Chao Xu. « Comparative Study on Mechanical Properties of Jutecell, Cotton and Bamboo Fiber Knitted Fabrics 20 ». Advanced Materials Research 627 (décembre 2012) : 33–36. http://dx.doi.org/10.4028/www.scientific.net/amr.627.33.

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In order to have a better understanding and using of the new type of regenerated flax fiber –Jutecell, Mechanical properties of three kinds of fabrics which knitted by Jutecell, cotton and bamboo fiber were tested, focusing on the stretching, bursting, abrasion-resistant and anti-pilling properties, through the comparison and analysis of the three kinds of fabrics, the results shown that: The strength of Jutecell fabric is the best, followed by regenerated bamboo fiber, natural cotton fibre is the worst. The stretching, bursting and abrasion-resistant of the fabrics knitted by Jutecell yarn are all better than that of the cotton and bamboo fiber knitted fabrics; but its anti-pilling performance is poor, a appropriate measure must be taken in the production process to reduce the pilling phenomenon of clothes made by Jutecell yarns.

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Wang, Zhi De, Jing Li, Zhen Wei Guan, Yu Zhong Zhang, Yan Wang et Zhi Yong Wang. « Fabrication and Evaluation of an Amino Modified Epoxy Coating for Anti-Scouring and Anti-Corrosion Application ». Materials Science Forum 815 (mars 2015) : 684–89. http://dx.doi.org/10.4028/www.scientific.net/msf.815.684.

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Excellent performance is necessary for compressor blade when aircraft engine serves in harsh environment, where it will go through scouring from jet-stream and extraneous sand, shaking of blades and corrosion from corrosive medium, taking moisture, salt, SO2 for example. Due to the shortage of scouring resistant and anti-corrosion property, shedding of damaged coating is a fundamental reason for the breakdown of aircraft engine blades, which is also the technique bottleneck that hinders the engineering application of compressor blades. Aiming at such problems, an amino modified epoxy coating which performed excellent scouring resistent and anti-corrosion property was fabricated on blades in this paper. Physical properties, anti-corrosion performance, abrasion resistant profiles and scouring resistant test were comprehensively evaluated. Results showed that the coating displayed a high hardness (pendulum hardness 0.9), overlong pot life, well anti-corrosion performance and excellent scouring resistant property. Pot life extends from 8h which is that of common coatings to 36h, so that it is benefit to large scale coating in engineering application. The anti-corrosion performance is similar to traditional aluminizing/inorganic silicate protect coatings, and abrasion resistant property is superior to common protect coatings. Moreover, scouring resistance performance is 3~4 times that of traditional coatings. Hence, such protective coatings could ensure the long lasting of blades protection.

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Li, Wen Zhen, et Nan Qu. « Study of High Temperature Wear Resistance of Hot Work Steel for Magnesium Alloy Die Casting ». Advanced Materials Research 26-28 (octobre 2007) : 33–36. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.33.

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The wear properties of TFHS-1 hot work steel developed by Tsinghua University for magnesium die casting application was studied at elevated temperature with the help of GWY-2000 high temperature wear tester. The result showed that the oxidation wear is the main wear mechanism at high temperature with dry abrasion, which was also accompanied by some extent of adhesive wear and abrasive wear. Heat treatment conditions of TFHS-1 steel have an important effect on its anti-abrasion properties. In this paper, the higher temperature of tempering may result in the better wear resistance.

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Yi, Yong, Yingjun Jiang, Qilong Li, Changqing Deng, Xiaoping Ji et Jinshun Xue. « Development of Super Road Heat-Reflective Coating and Its Field Application ». Coatings 9, n^o 12 (29 novembre 2019) : 802. http://dx.doi.org/10.3390/coatings9120802.

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Heat-reflective coatings, used to reduce the asphalt pavement temperature and urban heat island effect, have a good cooling effect; coating development, however, generally focuses on cooling. This study aims to design a heat-reflective coating with both durability and cooling effect by considering the functions of each component, improving the coating bond strength and abrasion resistance, and conducting laboratory tests and test section verification. The coating developed exhibits bond strength and abrasion resistance 20% and 49%, respectively, higher than those of ordinary coatings. The experiments reveal a cooling effect of red coating up to 10.2 °C, a bond strength of up to 1.20 MPa at 25 °C, and an abrasion rate of up to 25% after 60 min; the cooling effect is basically the same as that for traditional heat-reflective coatings, but the bond strength and abrasion resistance significantly improved. In the analysis of the test section, the cooling effect reaches 7.0 °C, the performance of anti-skid decreases little, and the coating is still usable normally after 4 months.

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Wang, Peng, Jian Wang, Wei Duan, Chunyan Li, Huilong Han et Qing Xie. « A Superhydrophobic/Electrothermal/Photothermal Synergistically Anti-icing Strategy with Excellent Self-healable and Anti-abrasion Property ». Journal of Bionic Engineering 18, n^o 5 (septembre 2021) : 1147–56. http://dx.doi.org/10.1007/s42235-021-00093-w.

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AbstractUnexpected ice accumulation tends to cause many problems or even disasters in our daily life. Based on the superior electrothermal and photothermal function of the carbon nanotubes, we introduced a superhydrophobic/electrothermal/photothermal synergistically anti-icing strategy. When a voltage of 15 V was applied to the superhydrophobic sample, the surface could rapidly melt the ice layer (~ 3 mm thickness) within 530 s at the environmental temperature of − 25 °C. When the near-infrared light (808 nm) irradiates on the superhydrophobic sample, the ice could be rapidly removed after 460 s. It was found that the superhydrophobicity helps the melted water to roll off immediately, and then solves the re-freeze problem the traditional surfaces facing. Moreover, the ice can be completely melted with 120 s when the superhydrophobic/electrothermal/photothermal synergistically anti-icing strategy was utilized. To improve the mechanical robustness for practical application, both nanoscale carbon nanotubes and microscale carbon powders were utilized to construct hierarchical structure. Then these dual-scale fillers were sprinkled onto the semi-cured elastomer substrate to prepare partially embedded structure. Both hierarchical structure and partially embedded structure were obtained after completely curing the substrate, which imparts excellent abrasion resistance (12.50 kPa, 16.00 m) to the prepared sample. Moreover, self-healable poly(urea–urethane) elastomer was introduced as the substrate. Thus, the cutted superhydrophobic sample can be mended by simply contacting at room temperature.

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Hou, Jun Ying. « Research on Crafts of Ni-P-Al₂O₃-SiO₂ Electroless Composite Plating ». Key Engineering Materials 501 (janvier 2012) : 53–56. http://dx.doi.org/10.4028/www.scientific.net/kem.501.53.

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In order to obtain the composite coatings of abrasion resistance and anti-corrosion, experiments of Ni-P-Al2O3-SiO2 chemical composite plating were carried out by electroless composite plating technology, and then the added amount of composite particles influenced coatings performance were investigated. After experiments, the metallographic structure, the micro-hardness, bonding strength, thickness and anti-corrosion of composite coatings were characterized by using a XJZ-6A type metalloscope and a HVS1000 type micro-hardometer, respectively. The results show that the composite coatings have bright surface appearance and the properties of bath are stable. Besides having a higher hardness, a higher thickness and a lower porosity, composite coatings combine well with the matrix and the abrasion resistance is better when the amount of Al2O3-SiO2 composite particles were added correctly. These composite particles should be treated by ultrasonic vibration firstly.

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Chen, Zheyu, Huiyan Niu, Jiayin Li, Yang Zhang, Zhiyuan Zhang, Haotong Chen et Li Li. « Superamphiphobic coatings based on graphene oxide with abrasion resistant property by a simple method ». Journal of Physics : Conference Series 2383, n^o 1 (1 décembre 2022) : 012138. http://dx.doi.org/10.1088/1742-6596/2383/1/012138.

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Due to the excellent physiochemical properties of graphene oxide (GO), the fabrication of superamphiphobic coatings based on GO can explore the application fields of GO. Herein, superamphiphobic GO coatings are fabricated by simple dip coating GO and organosilane polymer (GO-FAS) dispersion on the cotton fabric, with GO acting as solid lubricant originating from its low friction coefficient. Through compound with PS/PTFE and PVDF-HFP/FAS, the PVDF-HFP/FAS/GO-FAS coating exhibit enhanced anti-abrasion property and can withstand 200 cycles of sandpaper abrasion. This study provides an opportunity for the applications of graphene oxide as superamphiphobic materials.

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Wu, Yong Gen, Liang Cai Cai et Ya Wei Fu. « Durability of Green High Performance Alkali-Activated Slag Pavement Concrete ». Applied Mechanics and Materials 99-100 (septembre 2011) : 158–61. http://dx.doi.org/10.4028/www.scientific.net/amm.99-100.158.

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Green high performance alkali-activated slag pavement concrete(ASC) was prepared by adding Na2SiO3 and NaOH complex activator in slag. Physical, mechanical performance and durability of ASC were studied by workability, strength, hydrostatics and chlorin ion penetrability, fast freeze-thaw cycle tests and abrasion resistance tests. The results show that slump of ASC exceeds 160mm, fluidity and workability is excellent. 28d compressive and flexural trength of AAC are 91.9MPa and 8.5MPa, 7d compressive and flexural strength are 84.8MPa and 7.6MPa, which belongs to high–early strenth concrete. And its impermeability rank exceeds S40, chlorin ion impermeability is excellent, 6h eletricity is 1751～1894 coulomb, and its anti-frozen rank exceeds F300, which can meet the anti-frozen requirements in frore area. Depth of abrade slot is 0.45～0.96mm, abrasion resistance of ASC is 4.99, so its physical, mechanical performance and durability are superior to traditional portland concrete.

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TOMODA, MASAYASU. « For Rubber Friction and Abrasion. Friction Wear and Anti Adhesion of Fluororubber. » NIPPON GOMU KYOKAISHI 68, n^o 9 (1995) : 655–61. http://dx.doi.org/10.2324/gomu.68.655.

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Cai, Chao, Xiaoli Yang, Zhen Wang, Haixia Dong, Hongwei Ma, Ning Zhao et Jian Xu. « Robust anti-reflective silica nanocoatings : abrasion resistance enhanced via capillary condensation of APTES ». Journal of Materials Chemistry C 3, n^o 17 (2015) : 4254–59. http://dx.doi.org/10.1039/c5tc00357a.

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Wang, Dong, Si Qing Zhang et Yun Long Zhang. « Numerical Simulation of Modified Trailing Edge of Francis Turbine Stay Vane Based on Solid-Liquid Two-Phase Flow ». Applied Mechanics and Materials 700 (décembre 2014) : 643–46. http://dx.doi.org/10.4028/www.scientific.net/amm.700.643.

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In order to investigate the silt abrasion of modified trailing edge of stay vane in Francis turbine, the numerical simulation of trailing edge with different geometries were carried out based on the solid-liquid two-phase flow by means of Computation Fluid Dynamics. The results show that low solid volume fraction distributes on the chamfered surface of trailing edge, and high solid volume fraction distributes on the end of oblique surface. The smaller the modified angle is, the larger the distribution area of high solid volume fraction is, which show the trailing edge with smaller oblique angle may suffer from silt abrasion. Therefore, in order to solve the vibration caused by Karman vortex the trailing edge has to be sharpened, the oblique angle of trailing edge should not be too small. At end of trailing edge needs to ensure a certain thickness, especially the trailing edge near the lower ring can be thicker, which can meet the anti-abrasion requirements.

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Hao, Jian Jun, Lu Ping Ma, Liang Gao, Yue Jin Ma et Jian Guo Zhao. « TiCN Cermet Composite Coating Prepared By Reaction Nitrogen Arc Welding Cladding Process ». Applied Mechanics and Materials 190-191 (juillet 2012) : 581–84. http://dx.doi.org/10.4028/www.scientific.net/amm.190-191.581.

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A TiCN cermet composite coating was fabricated on 45# steel substrate by reaction nitrogen arc welding cladding technique. The mixture powder of titanium and graphite was preplaced onto the 45# steel substrate after intensive mixing by star ball-mill and gluing with starch binder. The microstructures and phase of the coatings, interracial behavior between coatings and the substrate were investigated by scanning electronic microscope, X-ray diffractometer. The microhardness distribution of the coating section, frictional coefficient, abrasion loss and wearing surface morphology were investigated by microhardness tester, abrasion machine and scanning electronic microscope. The results show that an excellent bonding between the coatings and the 45# steel substrate is ensured by the strong metallurgical interface and phase of the coatings are mainly composed of TiCN. The highest microhardness of the coatings reaches HV 0.5 810, which is about 3 times more than that of the 45# steel substrate. The anti-abrasive test results show the coating has better anti-abrasive performance than the 45# steel substrate.

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WANG, CHAOXIA, MAO LI, MIN WU et LI CHEN. « COTTON FABRIC PROPERTIES WITH WATER-REPELLENT FINISHING VIA SOL–GEL PROCESS ». Surface Review and Letters 15, n^o 06 (décembre 2008) : 833–39. http://dx.doi.org/10.1142/s0218625x08012025.

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The properties of the cotton fabric with water-repellence finishing by sol method with the hexadecyltrimethoxysilane as additive were observed. The cotton fabrics were immersed in the prepared sols with double dip and double nip dried at 90°C, annealed at 160°C for 3 min. The water repellence and the physical properties such as gas permeability, bending properties, beetling properties, tensile strength, elongation at break, abrasion resistance, and anti-crease properties of the cotton fabrics were investigated. The results showed that anti-crease and tensile strength were improved. However, the abrasion resistance of the cotton fabrics decreased in some way. Both the bending and beetling properties measurement proved that the handle of the treated cotton fabrics changed stiffness. For the dyed fabrics by the water-repellent finishing, the hue was slightly changed, the deeper color was achieved. There is no adverse effect for treated fabric by water-repellent finishing on the fastness.

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Chen, Bing, Ming Cheng He et Hai Hai Lin. « Research on Abrasion Mechanism of Working Roll and Strategies of Anti-Wear in Tension Leveler ». Applied Mechanics and Materials 577 (juillet 2014) : 174–77. http://dx.doi.org/10.4028/www.scientific.net/amm.577.174.

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Combining with both working condition of working roll in tension leveler and wear classification, this paper maintains that abrasive wear is the main type of working roll’s abrasion, and states that shape defects of hot rolled strip is the main cause of the abnormal abrasion of working roll, and concludes that to reduce the wear of working roll relying solely on technology of tension leveling has its limits. So, combining with the materials of working roll in tension leveler and rolling mill, the surface hardness and the wear rates of different materials after heat treatment are experimentally analyzed to provide a theoretical guidance for the further improvement of working roll’s materials.

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Qin, Qinglong, Qingshan Meng, Huamei Yang et Wenjuan Wu. « Study of the anti-abrasion performance and mechanism of coral reef sand concrete ». Construction and Building Materials 291 (juillet 2021) : 123263. http://dx.doi.org/10.1016/j.conbuildmat.2021.123263.

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Ganss, C., A. Lussi, O. Grunau, J. Klimek et N. Schlueter. « Conventional and Anti-Erosion Fluoride Toothpastes : Effect on Enamel Erosion and Erosion-Abrasion ». Caries Research 45, n^o 6 (2011) : 581–89. http://dx.doi.org/10.1159/000334318.

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Dmitruk, Anna, Paulina Mayer et Joanna Pach. « Pull-off strength and abrasion resistance of anti-corrosive polymer and composite coatings ». International Journal of Surface Science and Engineering 13, n^o 1 (2019) : 50. http://dx.doi.org/10.1504/ijsurfse.2019.097924.

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Pach, Joanna, Anna Dmitruk et Paulina Mayer. « Pull-off strength and abrasion resistance of anti-corrosive polymer and composite coatings ». International Journal of Surface Science and Engineering 13, n^o 1 (2019) : 50. http://dx.doi.org/10.1504/ijsurfse.2019.10019184.

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Aspa, Llewellyn Ann N., et Chelsea Mae L. Escutin. « A Review of Additives and their Effects on the Hydrophobicity and Abrasion Resistance of Dip-Coated Silica-Based Anti-Reflective Coatings for Solar Panels ». Materials Science Forum 1076 (8 décembre 2022) : 83–88. http://dx.doi.org/10.4028/p-34oh76.

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The photovoltaic panel is one of the most promising advancements when it comes to sustaining energy. However, being exposed to extreme and harmful atmospheric conditions can decrease its efficient transmittance. Therefore, an anti-reflective coating is added to a PV panel to provide different promising properties for the PV panel. It is used to reduce the reflection of light for more efficient transmittance. It can also possess several properties like hydrophobic self-cleaning and abrasion resistance when further modified. With these properties, PV panels become more effective and maintain their high transmission for a long time. Different materials are used in fabricating ARCs, but this review focused on silica due to its low refractive index of 1.52 using the dip-coating fabrication technique. This review focused on introducing additives such as CTAB, PMHS, and PDMS and their effects on the hydrophobicity and abrasion resistance of ARCs. Moreover, studies gathered for each additive were analyzed and compared to determine the advantages and disadvantages of each additive. Insights and perspectives were also given by focusing on the factors affecting the hydrophobicity and abrasion resistance of ARCs which may help future researchers to fabricate more efficient ARCs.

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Kim, Young Jin, et H. S. Kim. « Functional Assessment of an Anti-Abrasive Elbow for Particle-Laden Gas Flows ». Key Engineering Materials 297-300 (novembre 2005) : 2345–50. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.2345.

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The characteristic of flow fields in elbow has been numerically studied to develop anti-abrasive elbows, which is typically equipped in coal-burning power plants, for conveying highvelocity particle-laden fluids. Specially, a vortex flow field in the pipe experiencing particle abrasion was formed and particle flow simulation was conducted. The governing equations for threedimensional, turbulent flow fields were discretized by FVM and solved by the SIMPLE algorithm.

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Wang, Hui, Li Ping Liu et Li Jun Sun. « Characterization of OGFC Mixtures Containing Lignin Fibers ». Applied Mechanics and Materials 174-177 (mai 2012) : 775–81. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.775.

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This paper deals with the viability of using lignin fibers as an additive in OGFC mixtures. Draindown test results indicated that OGFC mixtures with the two kinds of fibers can both be effectively used to retard draindown of the binder and mineral filler. Mixture designs were performed for a range of 3.5–6.0% asphalt content. Laboratory tests including indirect tensile load tests, Cantabro test, soaking Cantabro test were carried out on OGFC mixtures to determine the tensile strength, anti-abrasion ability and durability. The test results indicated that OGFC mixtures with lignin fibers showed improvement in strength, improved resistance to abrasion, and reduce moisture susceptibility when compared with mixtures without fibers. Comparison of test performance of two different lignin fibers added to OGFC mixture shows that flocculent lignin Fibers is superior to the Granular fiber.

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Ke, Cheng, Yifan Fang, Zheng Zhou, Guohong Wang, Yongjia Liu, Wei Wu, Lishuang Xiao, Mengzhuo Zhang, Haibao Hu et Jianxi Liu. « Superhydrophobic Composite Coating with Excellent Mechanical Durability ». Coatings 12, n^o 2 (31 janvier 2022) : 185. http://dx.doi.org/10.3390/coatings12020185.

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Superhydrophobic surfaces have great potential for self-cleaning, anti-icing, and drag-reducing because of their water repellency property. However, their super-hydrophobicity is destroyed under mechanical abrasion due to the vulnerability of the delicate surface textures. Here, we demonstrate a strategy to create a robust superhydrophobic surface using MXene and fluoridated silica as functional fillers in epoxy resin. The fluoridated silica produces low surface energy, MXene serves as a wear-resistant phase and epoxy resin is the binding matrix. The composite coating demonstrates a self-cleaning effect to remove particles from the superhydrophobic surface by rolling water droplets. Moreover, the coating exhibits excellent mechanical durability by standing abrasion to maintain super-hydrophobicity. The superhydrophobic composite coating has the advantages of low cost and feasibility and has the potential for expandable industrial promotion.

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Schultz, C. L., A. G. Buret, M. E. Olson, H. Ceri, R. R. Read et D. W. Morck. « Lipopolysaccharide Entry in the Damaged Cornea and Specific Uptake by Polymorphonuclear Neutrophils ». Infection and Immunity 68, n^o 3 (1 mars 2000) : 1731–34. http://dx.doi.org/10.1128/iai.68.3.1731-1734.2000.

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ABSTRACT Bacterial lipopolysaccharide (LPS) is an important agent of induction of ocular pathology following corneal injury or wearing of contaminated contact lenses. The mechanism of LPS uptake through the corneal epithelium is unclear, and the role played by inflammatory cells in this phenomenon has not been previously assessed. Fluorescein isothiocyanate-labeled LPS from Escherichia coli was deposited onto the abraded corneas of New Zealand White rabbits. Epifluorescence microscopy of living excised corneas revealed diffuse LPS staining in the epithelial and stromal layers only in the vicinity of the abrasion. In addition, specific cellular uptake of LPS was suggested by fluorescence staining of cells along the abrasion site. In a second series of experiments, an anti-CD18 polyclonal antibody was used to block infiltration of polymorphonuclear neutrophils (PMN) into the cornea. In these experiments, a diffuse distribution of fluorescent LPS was still observed along the abrasion, but the specific cellular uptake was abolished. The findings indicate that LPS enters the cornea via diffuse penetration at sites of injury and that specific cellular uptake of LPS occurs within the cornea via PMN which have migrated into the damaged tissue.

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Mittal, Rinku K., Ramesh K. Singh, Salil S. Kulkarni, Praveen Kumar et H. C. Barshilia. « Characterization of anti-abrasion and anti-friction coatings on micromachining response in high speed micromilling of Ti-6Al-4V ». Journal of Manufacturing Processes 34 (août 2018) : 303–12. http://dx.doi.org/10.1016/j.jmapro.2018.06.021.

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