Revealing the anti-friction mechanism of in-situ synthesized MoS2-S nanocomposite coating under different shear stress

ZH Yang and BK Ning and YN Chen and N Wang and QY Zhao and ZF Zhang and ZM Hou and Y Kang and GR Gao and K Hua, TRIBOLOGY INTERNATIONAL, 195, 109587 (2024).

DOI: 10.1016/j.triboint.2024.109587

This paper explores the anti-friction mechanisms of MoS 2 in MoS 2 -S nanocomposite coating through molecular dynamics (MD) simulations. Our findings indicate that pin-on-disc wear has a lower and more stable coefficient of friction than reciprocating wear. The in situ synthesized MoS 2 achieves friction reduction by promoting interlayer sliding by changing the plane spacing in response to tangential forces. In particular, for pin-on-disc wear, the rotational stresses results in isotropy friction and produces uniform strain and dislocation accumulation in the wear trace, leading to a stable and low COF. This study provides information on the sliding mechanism of MoS 2 in self- lubricating coatings, which is essential to facilitate the development of new coatings for light alloys.

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