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sliding speed of 0.47 m/s. But the wear mechanism does not change under sliding speed of 0.94 m/s. The effect of sliding speeds on wear rate of the MMCs specimens is greater and more complex than that of the AZ91D matrix alloy. The relationship between wear rate and volume fraction of the composite is influenced by applied loads and sliding speeds under dry friction. Key words: aluminium......
rate under dry sliding of the composites were investigated at room temperature. By scanning electron microscopy (SEM), the worn surfaces and debris were observed, and wear mechanism was also analyzed and discussed. The experimental wear process consists of the run-in, steady wear and severe wear process with the increasing of sliding distance. Both the friction coefficient and wear rate......
. The results indicated that the material with the highest hardness was the one continuously cooled at 20°C, which exhibited the lowest wear rate under each set of test conditions. The hardness of the worn...Wear behavior of bainite ductile cast iron under impact loadTing Sun,Ren-bo Song,Fu-qiang Yang,Chun-jing WuSchool of Materials Science and Engineering, University of Science and Technology Beijing摘 要......
定磨合阶段,以保证入轨工作后具有较好的摩擦磨损性能. 图8 真空跑合磨损率 Fig. 8 Wear rate of brushes Ag-Cu-MoS2电刷的磨损表面形貌如图9所示.从图9可见:电刷磨损表面沿滑动摩擦方向形成了大量深度浅且均匀的犁沟,大量黑色小块均匀分布于电刷的磨损表面.对图中黑色小块区域进行能谱分析,发现黑色小块区域含有大量的Mo元素和S元素,这说明在Ag-Cu-MoS2电刷经...向会严重影响电刷材料磨损行为. 图5 真空跑合的电刷磨损形貌 Fig. 5 Wear morphology of brushes 图6 真空跑合电刷的磨损面积 Fig. 6 Wear aera of brushes 跑合方向对电刷材料磨损行为影响与顺向电刷和逆向电刷的受力状态相关.图7所示为跑合过程中顺向电刷和逆向电刷受力分析示意图,顺向电刷和逆向电刷由于摩擦力的方向不同,2组电刷的受力状态显......
. As the temperature increased from 25 to 500 °C, the wear rate of the coated balls increased from the scale of 10-21–10-20 m3/N m, and then decreased to 10-22 m3/N m as the temperature further increased to 700 °C...Friction and Wear Behavior of AlTiN-Coated Carbide Balls Against SKD11 Hardened Steel at Elevated TemperaturesRui Wang1,2,Hai-Juan Mei1,Ren-Suo Li2,Quan Zhang1,Teng-Fei Zhang1,Qi-Min Wang11. School......
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exhibits lower wear rate and friction coefficient, and better anti-frictional property than the currently used aluminum bronzes QAl10-3-1.5 and QAl10-4-4[1-3]. Corrosion behavior of copper... Corrosion and wear behaviors of Al-bronzes in 5.0% H2SO4 solution LI Wen-sheng(李文生), WANG Zhi-ping(王智平), LU Yang(路 阳), YUAN Li-hua(袁利华), XIAO Rong-zhen(肖荣振), ZHAO Xu-dong(赵旭东......
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Article ID: 1003-6326(2005)05-0978-07 Improvement of wear resistance of AZ31 and AZ91HP by high current pulsed electron beam treatment GAO Bo(高 波)1, 2, HAO Sheng-zhi(郝胜智)2, DONG Chuang(董... to the solute trapping effect during the fast solidification process. Measurements on sliding wear show that wear resistance is improved by approximately 5.6 and 2.4 times for the AZ31 and AZ91HP respectively......
alloy (Ti–6Al–4V) for minimizing its wear rate. The wear properties of the base samples and laser surface textured samples are analyzed by conducting wear tests under a sliding condition using pin... the wear rate and CoF by varying the input parameters in the response-surface-methodology-based (RSM-based) Box–Benhken design (BBD) using design of experiments (DOE). The size and depth of the dimple......
