Effect of Cr–Fe on friction and wear properties of Cu-based friction material

ABSTRACT

The copper-based friction material with Cr–Fe particles was prepared using the hot pressing powder metallurgy sintering process. Effects of Cr–Fe particles content on the microstructure formation and the friction/wear property of copper-based friction material were investigated. The addition of Cr–Fe powder could effectively modify the bonding status between the hard phase and the matrix. The bonding strength between the hard phase and the matrix increased with increasing content of Cr–Fe powders in the range of 0–11 wt-%. With increasing content of Cr–Fe powders, the hardness of the copper-based friction material increased gradually. When the content of Cr–Fe was 11 wt-%, the copper-based friction material had the best combination of coefficient of friction, hardness and wear capacity.

KEYWORDS:

• Cr–Fe powder
• powder metallurgy
• friction material
• friction and wear

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors are grateful to the financial support of the National Natural Science Foundation of China [grant number 51501167], Science and Technology Open Cooperation Project of Henan Province [grant number 162106000019] and Doctor Research Foundation of Zhengzhou University of Light Industry [grant number 2014BSJJ049].