Effects of Fe and graphite on friction and wear properties of brake friction materials for high-speed and heavy-duty vehicles

被引:24
|
作者
Zheng, Dan [1 ,2 ]
Zhao, Xiang [2 ]
An, Kang [3 ]
Chen, Long [1 ]
Zhao, Yun [5 ]
Khan, Dil Faraz [6 ]
Qu, Xuanhui [1 ]
Yin, Haiqing [4 ]
机构
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China
[2] Beijing Bei Mo Gao Ke Frict Mat Co Ltd, Beijing 102206, Peoples R China
[3] North China Univ Technol, Sch Mech & Mat Engn, Beijing 100144, Peoples R China
[4] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
[5] China Agr Univ, Coll Sci, Beijing 100083, Peoples R China
[6] Univ Sci & Technol Bannu, Dept Phys, Bannu 28100, Pakistan
基金
中国国家自然科学基金;
关键词
P/M friction materials; High-speed rail; Friction and wear; Brake pad; TRIBOLOGICAL PROPERTIES; CU; MICROSTRUCTURE; DEFORMATION; MECHANISMS;
D O I
10.1016/j.triboint.2022.108061
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
In this study, the powder metallurgy process was used to prepare friction materials. Fe and graphite powders were added to the friction materials at different proportions. The friction and wear properties of the materials were evaluated by the MM3000 friction and wear tester. Combined with scanning electron microscope and physical and mechanical properties testing, the influence of the synergistic effect of Fe powder and graphite on the properties of the friction materials was studied. The results showed that the total content of Fe and graphite has not changed. Moreover, the hardness and strength of the material increased by increasing the iron content. The average friction coefficient first increased and then decreased. Furthermore, the instantaneous friction coefficient stability decreased, and the wear extent first slightly decreased and then increased. The comprehensive properties of the material were optimal when the Fe content and graphite powder were 14 % and 20 %, respectively.
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页数:9
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