Microstructural investigation on antifriction characteristics of self-lubricating copper hybrid composite

被引：23

作者：

Zhan, YZ ^{[1
]}

Shi, XB ^{[1
]}

Xie, HF ^{[1
]}

机构：

[1] Guangxi Univ, Key Lab Nonferrous Met Mat & New Proc Technol, Nanning 530004, Guangxi, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2006年 / 22卷 / 03期

关键词：

antifriction characteristics; copper hybrid composite; nanographite particles; tribolayer;

D O I：

10.1179/026708306X81450

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Owing to good antifriction properties and high wear resistance, copper hybrid composites reinforced with hard ceramic particles and solid lubricant components are regarded as promising materials for applications in sliding electrical contacts. The present work investigates the antifriction mechanism of a (SiC + Gr)/Cu composite from a microstructural viewpoint, so as to assist the development and application of this material. A graphite rich tribolayer formed on the worn surface was responsible for good tribological properties of the composites. Testing results showed that nanoparticles of graphite were involved in a mechanically mixing process by adhering to both the other wear debris and the two contacting surfaces, thereby developing a solid lubricant tribolayer. The nanographite to nanographite contacting mode, formed between the composite and the counterface, significantly improved wear resistance and friction stability. The forming and failure process of the graphite rich tribolayer was studied. A mechanism has been developed based on the experimental results.

引用

页码：368 / 374

页数：7

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