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Experimental Study on Tribological Properties of Graphite-MoS2 Coating on GCr15

[+] Author and Article Information
Fanming Meng

The State Key Laboratory of Mechanical Transmission Chongqing University Chongqing 400044, People’s Republic of China
fmmeng@cqu.edu.cn

Zhongtao Cui

The State Key Laboratory of Mechanical Transmission Chongqing University Chongqing 400044, People’s Republic of China
zt_cui@cqu.edu.cn

Zhitao Cheng

The State Key Laboratory of Mechanical Transmission Chongqing University Chongqing 400044, People’s Republic of China
zt_cheng@cqu.edu.cn

Huali Han

The State Key Laboratory of Mechanical Transmission Chongqing University Chongqing 400044, People’s Republic of China
hhl@cqu.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4039796 History: Received December 30, 2017; Revised March 16, 2018

Abstract

The graphite-MoS2 coated on GCr15 bearing steel is prepared through air spraying and its tribological performances are investigated experimentally. Then its coefficient of friction (COF) and wear scar width (WSW) are investigated through the MFT-5000 multi-function tribometer and other test equipments. The experimental results show that the addition of the graphite can effectively decrease the COF and narrow the WSW of the MoS2. There exists a critical applied load for wearing out the surface with the graphite-MoS2 coating. Moreover, there exists an optimal rotational speed of 500 rpm to decrease the COF and WSW of the GCr15 steel.

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