Substance evolution and wear mechanism on friction contact area of brake disc for high-speed railway trains at high temperature

被引：42

作者：

Zhang, Peng ^{[1
]}

Zhang, Lin ^{[1
]}

Wei, Dongbin ^{[2
]}

Wu, Peifang ^{[2
]}

Cao, Jingwu ^{[2
]}

Shijia, Cairang ^{[2
]}

Qu, Xuanhui ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

[2] Beijing Tianyishangjia New Mat Corp Ltd, Beijing 100094, Peoples R China

来源：

ENGINEERING FAILURE ANALYSIS | 2020年 / 111卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Brake disc; Friction coefficient; Wear mechanism; High temperature; PIN-ON-DISC; 3RD BODY; COPPER; PERFORMANCE; BEHAVIORS; LAYER;

D O I：

10.1016/j.engfailanal.2020.104472

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The high temperature induced by the increased braking speed of high-speed railway train leads to the variation of structure and composition of tribo-film on the wear region of brake disc. The tribo-film was characterized in detail after the pin-on-disc experiments at 400-800.. The results indicate with the increase of temperature, the tribo-film changes from single layer structure (mechanical mixing layer (MML)) to double layer structure (MML at the bottom and oxide layer at the top). In addition, the wear mechanism also changes from abrasive wear on the surface of disc to adhesive wear on the tribo-film. Those are related to the increased substance transfer rate between the friction interfaces with the softening of copper matrix.

引用

页数：13

共 23 条

[1] INFLUENCE OF THERMAL EXPANSION ON FRICTION AND WEAR PROCESS [J].