Study on tribology performance of CoCrMo alloy parts manufactured by selective laser melting

被引：0

作者：

Zhang G. ^{[1
]}

Yang Y. ^{[1
]}

Lin H. ^{[1
]}

Song C. ^{[1
]}

Zhang Z. ^{[1
]}

Yu J. ^{[2
]}

机构：

[1] School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510640, Guangdong

[2] Institute of Sports Medicine, Peking University Third Hospital, Beijing

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2016年 / 43卷 / 08期

关键词：

CoCrMo alloy; Friction coefficient; Laser technique; Selective laser melting; Surface topography; Wear rate;

D O I：

10.3788/CJL201643.0802013

中图分类号：

学科分类号：

摘要：

The friction wear testing machine is applied in the friction and wear experiments and the weight of the parts before and after experiments are compared in order to investigate the variance of friction coefficients and wear rates under different conditions. In order to study the wear mechanism, the surface structure and morphology of CoCrMo parts before and after experiments are observed by the metalloscope and the scanning electron microscope, respectively. The results show that, under the respective lubrication condition of dry friction, sodium chloride (NaCl) or artificial saliva, the wear rate of the front face of the SLM manufactured parts is 27.92%, 21.15% or 19.03% lower than that of the casting parts, and 26.97%, 10.88% or 14.97% lower than that of the lateral face. Compared with casting parts, the SLM manufactured parts have a uniform surface structure on which there nearly no holes. Under the condition of dry friction, abrasive wear dominates. In contrast, under the lubrication conditions of NaCl and artificial saliva, abrasive wear and fatigue wear dominate. These findings provide the basis for the application of the SLM manufactured CoCrMo alloy in medical implants. © 2016, Chinese Lasers Press. All right reserved.

引用

页数：10

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