Friction properties and lubrication mechanism of self-lubricating composite solid lubricant on laser textured AISI 52100 surface in sliding contact

IF 1 4区工程技术 Q4 ENGINEERING, MECHANICAL

International Journal of Surface Science and Engineering Pub Date : 2018-09-16 DOI:10.1504/IJSURFSE.2018.10016052

X. Hua, J. Puoza, Peiyun Zhang, Jianguo Sun

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引用次数: 8

Abstract

The frictional behaviour and lubrication mechanism of self-lubricating Gr-MoS2-PI-CNT composite were investigated experimentally, characterised by surface preparation method and texture density. The results indicate that the dimples filled with composite solid lubricant (sample TPL) exhibited the best lubrication mechanism with the lowest friction as compared to the smooth surface without lubrication (sample S), textured surface without lubrication (sample T), textured surface burnished with solid lubricant (sample TSL) and textured surface coated with solid lubricant block (sample TBL). The texture density of 41.7% exhibited good friction properties under both higher loads and speeds. The composite solid lubricant formed stable lubricant-peaks on each dimple the by 'slide extrusion accumulation' mechanism with a gradient phenomenon along the sliding direction which improved the self-lubricating effect of the lubricant. The energy dispersive X-ray spectroscopy (EDS) analysis indicates that the solid lubricant has been transferred from the micro-dimples to the space between dimples which improved lubrication.

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自润滑复合固体润滑剂在激光织构AISI 52100表面滑动接触摩擦性能及润滑机理

实验研究了自润滑Gr-MoS2-PI-CNT复合材料的摩擦行为和润滑机理，并通过表面制备方法和织构密度对其进行了表征。结果表明，与未润滑的光滑表面（样品S）、未润滑的纹理表面（样品T）和未润滑的粗糙表面（样品D）相比，填充复合固体润滑剂的凹坑（样品TPL）表现出具有最低摩擦的最佳润滑机制，用固体润滑剂抛光的有纹理的表面（样品TSL）和用固体润滑剂块涂覆的有纹理表面（样品TBL）。41.7%的织构密度在较高的载荷和速度下都表现出良好的摩擦性能。复合固体润滑剂通过“滑动-挤压-堆积”机制在每个凹坑上形成稳定的润滑剂峰，并沿滑动方向出现梯度现象，提高了润滑剂的自润滑效果。能量色散X射线光谱（EDS）分析表明，固体润滑剂已从微凹坑转移到凹坑之间的空间，从而改善了润滑。

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来源期刊

International Journal of Surface Science and Engineering 工程技术-材料科学：膜

CiteScore

1.60

自引率

25.00%

发文量

审稿时长

>12 weeks

期刊介绍： IJSurfSE publishes refereed quality papers in the broad field of surface science and engineering including tribology, but with a special emphasis on the research and development in friction, wear, coatings and surface modification processes such as surface treatment, cladding, machining, polishing and grinding, across multiple scales from nanoscopic to macroscopic dimensions. High-integrity and high-performance surfaces of components have become a central research area in the professional community whose aim is to develop highly reliable ultra-precision devices.