固体润滑国家重点实验室（LSL）知识库

Purpose – This paper aims to focus on studying the addition of nanotungsten disulfide (WS₂ ) on fretting wear performance of ultra-high molecular-weight-polyethylene (UHMWPE).
Design/methodology/approach – In this study, the effect of WS₂ content on fretting wear performance of UHMWPE was investigated. The fretting wear performance of the UHMWPE and WS₂ /UHMWPE nanocomposites were evaluated on oscillating reciprocating friction and wear tester. The data of the friction coefficient and the specific wear rate were obtained. The worn surfaces of composites were observed. The transfer film and its component were analyzed.
Findings – With the addition of 0.5% WS₂ , the friction coefficient and specific wear rate increased. With the content increased to 1% and 1.5%, the friction coefficient and specific wear rate decreased. The lowest friction coefficient and specific wear rate were obtained with the addition of 1.5% nano-WS₂ . Continuingly increasing content, the friction coefficient and wear rate increased but lower than that of pure UHMWPE.
Research limitations/implications – The research indicated the fretting wear performance related to the content of nano-WS₂ with the incorporation of WS₂ into UHMWPE.
Practical implications – The result may help to choose the appropriate content.
Originality/value – The main originality of the research is to reveal the fretting behavior of UHMWPE and WS₂ /UHMWPE nanocomposites. It makes us realize the nano-WS₂ had an effect on the fretting wear performance of UHMWPE.