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| Friction properties of MoS2/Ag lubricated coating sprayed by plasma spray on
rotating shafts |
| LI Can1，ZHANG Zhongxin2 |
| 1 Department of Automotive Engineering, Luohe Food Vocational College, Luohe henan 462300, China；
2Department of Food Machinery, Luohe Food Vocational College, Luohe henan 462300） |
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Abstract In order to improve the lubrication performance of the surface of mechanical rotating shaft, the MoS2/
Ag coating was prepared on the surface of 1Cr18Ni9Ti stainless steel by plasma spraying (APS) process. The microstructure
and friction properties of the coating were studied. The results show that there are metal phase components
in the MoS2/Ag coating, the high temperature will cause the melting of the two kinds of metal powder particles
and the coating with dense structure is obtained. Ag powder has co-deposited with MoS2 in high temperature
environment, and the elemental composition of each coating is basically the same as that of spraying powder.
When 20%Ag is added to the coating, the friction coefficient is lower at all temperatures compared with other Ag
content coatings. When the temperature increases to 650~850 ℃, the wear rate decreases with the increase of Ag
content in the coating. The 20%Ag coating has the smoothest wear surface and no peeling or furrowing occurs. The
Ag coating provides good lubrication. The Ag2MoO4 with lamellar structure is formed by chemical reaction between
Ag and Mo at high temperature, and good lubricity is obtained.
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Received: 23 December 2019
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2021, Vol. 31 
