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demonstrated that the repair outcome of magnesium screw in hallux valgus surgery can almost equal to titanium screw [5]. However, their too fast initial degradation rate and wear properties are the drawback... debris) using a precision balance (0.1 mg). Each test was repeated three times in order to check the reproducibility and average of three tests was considered to determine the wear rate. Because......
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and vibrating(SRV) machine. SiCp/Cu composites slid against hardened GCr15 bearing steel ball in the load range of 40-200 N. The results show that the wear rate increases with increasing porosity... abrasion is the controlling wear mechanism. In addition, porosity has more important influence on wear rate at high load than at low load. This is associated with the fact that the fracture and spalling......
Effect of Strain Rate on Compression Behavior of Vinyl Ester Resin Casting MAO Ming-zhong1,XU Xian-jian1,XIONG Jie1,XIONG Tao1,ZHOU Kai1,YANG Bin1 (1.Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China) 摘要:Quasi-static and high strain rate compressive experiments on vinyl ester casting were......
STRAIN RATE SENSITIVITY OF ULTRAFINE-GRAINED Cu WITH NANOSIZED TWINS L. Lu1,L.X. Liu1,X.H.Chen1 (1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) Abstract:An ultrafine-grained Cu sample with a high density of growth twins was synthesized by means of pulsed electrodeposition technique. The strain rate......
and durability tests and analysis for brush samples The wear and durability tests for four kinds of brushes were conducted on an HGH5435M120 AC motor. The wear rate and some related experimental phenomena are listed in Table 5. From Table 5 one can see that brush sample 2 has the smallest wear rate, spark grade and the lowest bulk temperature, whereas brush sample 4 has the biggest wear rate......
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the sliding speed is 2 500 r/min, the COF reaches the peak value of 0.52. The linear wear rate shows the trend of decrease with the increase of sliding speed. When the speed is 1 000 r/min, the linear wear rate is 21.3 mm/(cycle?face). When the sliding speed is less than 4 000 r/min, the wear mechanism is abrasive wear, while the wear mechanism is adhesive and oxidation wear when sliding speed is above 4......
performed against an AISI 52100 steel pin at a constant load and sliding velocity showed that there was a critical content for both types of the reinforcements at which the lowest wear rate was obtained, i.e. 10 vol.% and 2 vol.%, respectively, for Al/SiC and Al/MoS2 composites. However, the lowest wear rate and friction of coefficient were attained for Al/10SiC/2MoS2 hybrid composite. According......
Novel High Rate Lithium Intercalation Cathode Materials Cheng Yushan1,Zhang Yong2,Liu Yuwen1,Hu Xinguo2 (1.Jiangmen JJJ Battery Co., Ltd, Jiangmen 529000, China;2.Department of Applied Chemistry... of V2O5. A new type of V2O5/carbon/Nd2O3 composite was prepared by mixing vanadium oxide hydrosol, acetone, carbon and Nd2O3 powder. High rate discharge/charge property of the composite electrode......
