Abstract A theoretical model that integrates the comprehensive effects of surface roughness, plastic deformation, adhesion, material strength and crystal orientation is established to quantitatively calculate the frictional force of diamond sliding on diamond. The effectiveness and accuracy of the model are verified by various nanofrictional experiments using an atomic force microscopy tip and molecular dynamics simulations sliding along the different orientations on the {100} and {110} crystal planes. Moreover, the internal reasons why the frictional force of diamond sliding on diamond is anisotropic are analyzed to be caused by the amorphous defects, dislocations and von Mises shear strain occurring on the rubbed surface.

中文翻译：

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金刚石在金刚石上滑动的摩擦力各向异性的起源

摘要 建立综合表面粗糙度、塑性变形、附着力、材料强度和晶体取向等综合影响的理论模型，定量计算金刚石在金刚石上滑动的摩擦力。该模型的有效性和准确性通过使用原子力显微镜尖端的各种纳米摩擦实验和沿 {100} 和 {110} 晶面上不同方向滑动的分子动力学模拟得到验证。此外，分析了金刚石在金刚石上滑动的摩擦力呈各向异性的内在原因，是由摩擦表面产生的非晶缺陷、位错和von Mises剪切应变引起的。