Abstract In recent years, a few select carbonaceous fillers with nanometer-size dimensions, such as graphene platelets, activated carbon nanoparticles and carbon nanotubes, have been shown to reduce the wear rates of PTFE to levels approaching 10−7 mm3/Nm and below. X-ray diffraction (XRD) and attenuated total reflectance (ATR) mode IR spectroscopy are used to show that these highly effective fillers provide wear resistance to PTFE through shared mechanisms. These mechanisms are also shown to operate in highly wear-resistant composites of PTFE with nanometer-sized particles of α-phase alumina. Addition of these highly effective fillers to PTFE results in a greater resemblance of the crystalline structure of PTFE at room temperature with a tougher and higher temperature phase. When slid against steel countersurfaces under ambient conditions, these fillers embedded within the PTFE matrix also enable the formation of robust transfer films through the formation of metal chelates.

中文翻译：

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高耐磨石墨烯和其他碳填充 PTFE 纳米复合材料中的磨损减少机制

摘要 近年来，一些具有纳米尺寸尺寸的精选碳质填料，如石墨烯片、活性炭纳米颗粒和碳纳米管，已被证明可以将 PTFE 的磨损率降低到接近 10-7 mm3/Nm 及以下的水平。X 射线衍射 (XRD) 和衰减全反射 (ATR) 模式红外光谱用于表明这些高效填料通过共享机制为 PTFE 提供耐磨性。这些机制也被证明在 PTFE 与纳米尺寸的 α 相氧化铝颗粒的高耐磨复合材料中起作用。将这些高效填料添加到 PTFE 会导致室温下 PTFE 的晶体结构更加相似，具有更强韧和更高温度的相。在环境条件下在钢制反面滑动时，