0
research-article

Sliding tribological behavior of Al-Fe-V-Si-Graphite solid-lubricating composites at elevated temperatures

[+] Author and Article Information
Hui Tan

State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China; University of Chinese Academy of Sciences, Beijing 100039, PR China
tanhui@licp.cas.cn

Shuai Wang

State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
licpws@163.com

Jun Cheng

State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
chengjun@licp.cas.cn

Shengyu Zhu

State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
zhusy@licp.cas.cn

Jun Yang

State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
jyang@licp.cas.cn

1Corresponding author.

ASME doi:10.1115/1.4037213 History: Received April 09, 2017; Revised July 03, 2017

Abstract

Aluminum metal matrix composites (Al-MMCs) have been considered as promising materials for aerospace and automotive industries due to their excellent balance of physical, mechanical and tribological properties. In the present work, the Al-Fe-V-Si alloy matrix composites with 0-20 wt.% copper-coated graphite were fabricated by hot pressed sintering. The dry sliding tests were carried out at various temperatures ranging from room temperature (RT) to 350°C. The microstructure, phase, hardness and worn surface of the sintered composites were examined in detail. The effect of copper-coated graphite amount on the properties of the composite was also investigated. The results show that the Al-Fe-V-Si-Graphite composites mainly consists of a-Al, Al8Fe2Si intermetallic and graphite phases. The addition of Cu-coated graphite can decrease the friction coefficient and wear rate from RT to 350 °C. The Al-Fe-V-Si-Graphite composite containing 10 wt.% copper-coated graphite exhibits better wear properties than other composites. The favorable lubricating properties were attributed to the tribolayer with graphite lubricating film formed on the worn surface.

Copyright (c) 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In