Home

Editorial Board

Instructions for Authors

Review Process

Archives

Contact

 

EFFECT OF FRICTION MODES ON FRICTION PROPERTIES OF CU-SIO2 COMPOSITES 


Fei GAO1

gaofei@djtu.edu.cn

 

Rong FU1

Baoyun SONG1

 

Yves BERTHIER2

yves-berthier@insa-lyon.fr

 

 

1 Department of Material Science and Engineering, Dalian Jiaotong University, Dalian, China

 2 Laboratoire de Mécanique des Contacts et des Solides, Institut National des Sciences Appliquées de Lyon, France


 

Abstract. The effects of content and granularity of SiO2 on friction and wear performance of copper matrix composites depend on friction conditions. Cu-SiO2 composites are prepared through powder metallurgy for this study. The effects of SiO2 content, SiO2 granularity and different friction modes on the friction performance of the materials were searched at friction speeds of 1.6 ~ 47.1 m/s. The results show that the friction coefficient and wear rate increase with increasing SiO2 content, the SiO2 granularity has negligible effect, and the friction mode affects the friction and wear considerably as a result of its influence on the configuration of the third bodies. The third bodies formed in high speed friction are continuous and compact, leading to reduced wear rate and decreased fluctuation in the friction coefficient with the change in friction speed.
 

Keywords: copper matrix frictional materials, wear, third body, granularity, SiO2