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by powder metallurgy technology. The effect of graphite morphology on the tribological behavior for the Ag-SG and Ag-FG under the dry sliding wear was investigated with a pin-on-disk tribometer at a load of 3.0 N in atmosphere condition. The results indicated that the minimum wear rate of 3.5×10-5 mm3/(N·m) for Ag-FG was achieved and it reduced by nearly an order of magnitude, reaching 1.6×10-6 mm3/(N·m......
lower wear rate than the oxide films without SiC under dry sliding condition. SiC particles are likely to melt and then are oxidized by frictional heat during sliding tests. Potentiodynamic polarization...Microstructure and abrasive wear behaviour of anodizing composite films containing SiC nanoparticles on Ti6Al4V alloyLI Song-mei(李松梅), YU Xiu-mei(郁秀梅), LIU Jian-hua(刘建华), YU Mei(于美), WU Liang(吴量......
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in the boundary lubrication conditions, and then, the frictional and wear characteristics and the surface elements mass loss of the coating were analyzed. The results show that the friction coefficient of the coating has a gradual decline trend with the increase of the loads, although the wear loss gradually increases with the increase of the loads, the wear rate shows the downward trend......
of frictional resistance in horizontal and bent pipe measured by high accuracy pressure difference transducer[37] 图32 典型流变模型切应力与切变率的关系曲线[37] Fig. 32 Relationship curves between shear stress... between calculated drag formula and measured values of frictional resistance 4 磷石膏似膏体充填现场工业试验 磷石膏高浓度料浆现场环管试验完成之后,除了沿程阻力理论值和实测值对比之外,还需要对其测试结果进行现场工业试验验证.现场工业试验是按照真实的矿山磷石膏料浆输送管道充填到井下采空区,其目的主要有两个......
with the increase of sliding velocity. Fig. 5 Effect of sliding velocity on wear rate The sliding velocity strongly influences the frictional heat generated between the counter surfaces [27... with the increased degree of softening. The pin is subjected to less frictional heat at 0.4 m/s and the penetration of the counter surface is less, which leads to lower wear rate. As the sliding......
Microstructure and wear resistance of electrodeposited Ni-SiO2 nano-composite coatings on AZ91HP magnesium alloy substrateLIU Yan1, YU Si-rong2, LIU Jin-dan1, HAN Zhi-wu1, YUAN Dong-sheng2(1. Key... was observed by SEM, the microhardness was measured by micro-density tester and the wear resistance was estimated by M-200 type block-on-wheel dry sliding frication and wear tester. The results indicate......
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strengthening effect is obvious, which is caused by the well wear-resisting property, high hardness (319.369 HV) of the special carbon fiber and the better frictional property of MoS2.Key words:carbon fiber...显著增加了材料的摩擦因数,测试过程发现加入碳纤维后材料的摩擦因数由0.122分别升至0.154(CF)和0.167(SCF).由于特种碳纤维材料较高的硬度(319.369 HV)和较好的耐磨性以及MoS2较好的润滑性能,采用特种碳纤维和MoS2对银基材料进行复相润滑可使材料获得较好的综合摩擦磨损性能.关键词:碳纤维；银基复合材料；自润滑；摩擦磨损Friction and wear......
