Experimental Study on Friction Interface Self-healing Performance of Copper-based Powder Metallurgy Materials

doi:10.3901/JME.2023.18.069

Abstract

Abstract: In high power density transmission, the self-healing performance of copper based powder metallurgy friction components is directly related to the working reliability and equipment life. In this paper, a "damage-healing" test is designed for simulating the common furrow on friction interface, and the self-healing performance characterization method is explored. Based on the self-healing performance characterization parameters, the evolution process is comprehensively analyzed under specific working conditions, while the self-healing time is determined. Finally, through three groups of comparative experiments, the effects of temperature, speed and pressure on self-healing performance are investigated. The results show that, temperature and pressure have significant influence on self-healing performance. The rotating speed increase can promote the new phase formation of mineral compounds and the uniform filling of non-metallic components, but it has no obvious effect on the damage boundary hardness. This study provides a new idea for the interface repair technology of friction materials, and promotes the engineering application of friction interface self-healing performance.

Key words: friction component, self-healing performance, interface damage, powder metallurgy

CLC Number:

TF125

WANG Liyong, WU Jianpeng, LI Le, WANG Huaqing, CHEN Ruihan, SHU Yuechao. Experimental Study on Friction Interface Self-healing Performance of Copper-based Powder Metallurgy Materials[J]. Journal of Mechanical Engineering, 2023, 59(18): 69-79.

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