Abstract
This paper aims to provide efficient methods for enhancing the mechanical properties and tribological performance of WS2-based film. Pure WS2 film (SW), WS2-Ni composite film (SWN), WS2/WS2-Ni/Ni multiple-layer film (SWN-g), and WS2/WS2-Ni/Ni multiple-layer film on textured surface (SWN-t) were prepared on the cemented carbides substrates by electrohydrodynamic jet deposition. The surface morphology and composition of the deposited films were observed through scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) elemental analysis. The mechanical properties of films were measured through nanoindentation experiments, while the adhesion strength between the film and substrate was evaluated through scratch tests. The friction and wear performance were investigated through reciprocating sliding friction tests. Results indicated that multiple-layer film deposited on the textured surface (SWN-t) exhibited great tribological properties, it has the lowest friction coefficient and the highest adhesion strength. Compared with the pure WS2 film, the average friction coefficient decreased by 66.1 %, and the adhesion strength between films and substrate increased by 50.4 %.
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