In order to explore the relationship between the surface topography parameters and friction properties of a rough contact interface under fluid dynamic pressure lubrication conditions, friction experiments were carried out. The three-dimensional surface topography of specimens was measured and characterized with a profile microscopy measuring system and scanning electron microscope. The friction coefficient showed a trend of decreasing first and then increasing with the increase in some surface topography parameters at lower pressure, such as the surface height arithmetic mean Sa, surface height distribution kurtosis Sku, surface volume average volume Vvv, and surface center area average void volume Vvc, which are the ISO 25178 international standard parameters. The effects of surface topographic parameters on friction were analyzed and the wear mechanism of the worn surface was presented. The wear characteristics of the samples were mainly characterized as strain fatigue, grinding, and scraping. The results provide a theoretical basis for the functional characterization of surface topography.

中文翻译：

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表面形貌参数对随机粗糙表面的摩擦和磨损的影响。

为了探索在流体动压润滑条件下表面形貌参数与粗糙接触界面的摩擦性能之间的关系，进行了摩擦实验。测量了样品的三维表面形貌，并通过轮廓显微镜测量系统和扫描电子显微镜进行了表征。在较低压力下，摩擦系数呈现出先降低后随表面形貌参数增加的趋势，例如表面高度算术平均值Sa，表面高度分布峰度Sku，表面体积平均体积Vvv和表面中心面积平均值空隙体积Vvc，这是ISO 25178国际标准参数。分析了表面形貌参数对摩擦的影响，并提出了磨损表面的磨损机理。样品的磨损特性主要表现为应变疲劳，磨削和刮擦。结果为表面形貌的功能表征提供了理论基础。