Wear mechanism of Cu-based brake pad for high-speed train braking at speed of 380 km/h

被引：81

作者：

Xiao, Jin-Kun ^{[1
]}

Xiao, Shu-Xian ^{[1
]}

Chen, Juan ^{[2
]}

Zhang, Chao ^{[1
]}

机构：

[1] Yangzhou Univ, Sch Mech Engn, Yangzhou 225127, Jiangsu, Peoples R China

[2] Yangzhou Univ, Testing Ctr, Yangzhou 225009, Jiangsu, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2020年 / 150卷

基金：

中国国家自然科学基金;

关键词：

Metal matrix composite; Brake pad; Wear mechanism; Tribolayer; METAL-MATRIX COMPOSITES; BEHAVIOR; FRICTION; MICROSTRUCTURE; PERFORMANCE; RAIL; DRY;

D O I：

10.1016/j.triboint.2020.106357

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Cu-based brake pads for high-speed train were tested in full-scale at braking speeds as high as 380 km/h. The microstructure, composition and properties of the original, worn and lateral surfaces were investigated. The results show that a similar to 2 mu m thick nanostructured tribolayer composed of CuO and Fe2O3 was formed on the worn surface, owing to the plastic deformation, mechanical mixing, oxidation and sintering processes. The tribolayer enables significantly higher friction coefficient and wear resistance than original surface, which can be attributed to oxide-based composition and high hardness. The graphite particles in the worn and lateral surfaces were burned and the copper matrix was oxidized. The tribological property of brake pad highly depends on the composition and microstructure of the tribolayer.

引用

页数：8

共 32 条

[1] Energy storage systems to exploit regenerative braking in DC railway systems: Different approaches to improve efficiency of modern high-speed trains [J].

Ceraolo, M. ;

Lutzemberger, G. ;

Meli, E. ;

Pugi, L. ;

Rindi, A. ;

Pancari, G. .

JOURNAL OF ENERGY STORAGE, 2018, 16 :269-279

[2] Lowering coefficient of friction in Cu alloys with stable gradient nanostructures [J].

Chen, Xiang ;

Han, Zhong ;

Li, Xiuyan ;

Lu, K. .

SCIENCE ADVANCES, 2016, 2 (12)

[3] The Microstructure and Wear Characteristics of Cu-Fe Matrix Friction Material with Addition of SiC [J].

Cui, Gongjun ;

Ren, Jian ;

Lu, Zhangxiang .

TRIBOLOGY LETTERS, 2017, 65 (03)

[4] Carbon-based tribofilms from lubricating oils [J].

Erdemir, Ali ;

Ramirez, Giovanni ;

Eryilmaz, Osman L. ;

Narayanan, Badri ;

Liao, Yifeng ;

Kamath, Ganesh ;

Sankaranarayanan, Subramanian K. R. S. .

NATURE, 2016, 536 (7614) :67-+

[5] In situ ambient pressure XPS observation of surface chemistry and electronic structure of α-Fe2O3 and γ-Fe2O3 nanoparticles [J].

Flak, Dorota ;

Chen, Qianli ;

Mun, Bongjin Simon ;

Liu, Zhi ;

Rekas, Mieczyslaw ;

Braun, Artur .

APPLIED SURFACE SCIENCE, 2018, 455 :1019-1028

[6] Influence of the graphite elements morphology on the fatigue crack propagation mechanisms in a ferritic ductile cast iron [J].

Iacoviello, Francesco ;

Di Cocco, Vittorio .

ENGINEERING FRACTURE MECHANICS, 2016, 167 :248-258

[7] Thermal levels and subsurface damage induced by the occurrence of hot spots during high-energy braking [J].

Kasem, H. ;

Brunel, J. F. ;

Dufrenoy, P. ;

Siroux, M. ;

Desmet, B. .

WEAR, 2011, 270 (5-6) :355-364

[8] Relationships Between Surface Thermal Gradients and Disc Distortion During Stop-Braking with High Energy Dissipation [J].

Kasem, Haytam ;

Dufrenoy, Philippe ;

Desplanques, Yannick .

TRIBOLOGY LETTERS, 2012, 48 (02) :169-181

[9] High-speed rail and tourism in China: An urban agglomeration perspective [J].

Li, Leona S. Z. ;

Yang, Fiona X. ;

Cui, Chuantao .

INTERNATIONAL JOURNAL OF TOURISM RESEARCH, 2019, 21 (01) :45-60

[10] On the intrinsic hardness of a metallic film/substrate system: Indentation size and substrate effects [J].

Ma, Z. S. ;

Zhou, Y. C. ;

Long, S. G. ;

Lu, C. .

INTERNATIONAL JOURNAL OF PLASTICITY, 2012, 34 :1-11

← 1 2 3 4 →