Abstract The role of graphite/substrate interface in low-friction behavior of graphite was investigated. Iron and graphite powder mixtures were plastically deformed in either Ar–H2 or air atmospheres to obtain bare iron or iron oxide surface. Then, graphite particles adhered to and formed interfaces with surfaces. Friction force microscopy revealed that friction on particle surface milled in Ar–H2 atmosphere was obviously higher. X-ray absorption near-edge structure and transmission electron microscopy revealed that although the basal plane of graphite oriented along the oxidized surface, it did not occur along the bare iron surface, which explains the difference in lubricity on each surface.

中文翻译：

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石墨与铁基体界面对石墨基面取向和润滑性的影响

摘要 研究了石墨/基体界面在石墨低摩擦行为中的作用。铁和石墨粉末混合物在 Ar-H2 或空气气氛中塑性变形以获得裸露的铁或氧化铁表面。然后，石墨颗粒粘附到表面并与表面形成界面。摩擦力显微镜显示，在 Ar-H2 气氛中研磨的颗粒表面的摩擦力明显更高。X射线吸收近边结构和透射电子显微镜显示，虽然石墨的基面沿氧化表面取向，但并未沿裸铁表面发生，这解释了每个表面润滑性的差异。