滑动表面仿生微结构的摩擦学效应

Tribological Effect of Bio-inspired Microstructure on Sliding Surface

主要阐述在3种不同摩擦条件下(干摩擦、油润滑、水润滑),仿生表面微结构的形状、尺寸和分布密度对滑动表面摩擦学效应的影响。在干摩擦条件下,滑动表面仿生微结构能够将磨屑存储起来,排除了磨屑在滑动表面上的聚集,改善了摩擦学性能。而在油和水润滑条件下,仿生微结构能产生液体动压润滑薄膜和微型动压润滑室,导致承载能力增强和摩擦因数降低。因此,仿生表面微结构能显著地降低摩擦因数,提高滑动表面抗磨损的能力。

This paper mainly elucidates the influences of bio-inspired surface microstructure parameters such as shape, size and dis- tribution density on the tribological effect in air, oil and water. In air, the bio-inspired microstructure could store wear debris and parti- cles,and the accumulating wear debris on sliding surface would be eliminated. Thus, the tribological characteristics of sliding surface could be improved. Whereas in oil and water, the hydrodynamic lubrication chambers or films would be formed on the bio-inspired microstructure, which causes the load bearing capacity to be enhanced and the friction coefficient to be decreased. Therefore, the bio-inspired surface microstructure could reduce the friction coefficient and enhance the wear resistance.