Abstract
The friction and wear behavior and microstructure of an Ni/MoS 2 composite plating layer with high MoS 2 content and sufficient thickness produced by a brush plating method were studied. Experiments were conducted using a ‘pin-on-disc’ testing machine in vacuum with a pressure of approximately (6–9) × 10 −4 Pa. The plating layer was produced on the surface of the disc. The experimental results show that the friction coefficient can only reach a lower stable value when the MoS 2 content is more than 31.6% in volume, and the minimum friction coefficient of 0.014 can be obtained at 78% MoS 2 content. In order to reveal the mechanism for the excellent solid lubrication properties of Ni/MoS 2 plating layers, detailed analyses were conducted of the microstructure and orientation of grains by transmission electron microscopy. The codeposition process of both nickel and MoS 2 phases is also discussed.
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