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<p>Nongraphitic carbon, which shares structural similarities with diamond-like carbon, holds substantial potential in the field of friction materials. However, limited research on the friction film formation mechanism and tribological behavior of this material has hindered its selection and application across various friction environments. In this study, we comparatively investigate the tribological behavior of nongraphitic carbon and graphite under varying loading pressures. We conduct an in-depth analysis of the friction-induced graphitization process and the formation of friction films on the surface of nongraphitic carbon. The results demonstrate that the microcrystalline structure on the surface of nongraphitic carbon undergoes pressure- and shear-induced graphitization, with the degree of graphitization increasing proportionally with the applied loading pressure. Furthermore, the friction film becomes more refined as the pressure increases, resulting in a decrease in friction coefficient and wear rate. These findings provide a theoretical foundation for the effective selection and application of nongraphitic carbon in diverse frictional conditions.</p>

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Friction-Induced Graphitization and Friction Wear Mechanism of Nongraphitic Carbon

  • 期刊论文

  • 发表日期：

    2025年7月2日

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  • Zonghe Yang,
  • Hongxiang Yin,
  • Xueping Liu,
  • Yao Ma,
  • Zhanjun Liu,
  • Pengfei Lian

摘要

Nongraphitic carbon, which shares structural similarities with diamond-like carbon, holds substantial potential in the field of friction materials. However, limited research on the friction film formation mechanism and tribological behavior of this material has hindered its selection and application across various friction environments. In this study, we comparatively investigate the tribological behavior of nongraphitic carbon and graphite under varying loading pressures. We conduct an in-depth analysis of the friction-induced graphitization process and the formation of friction films on the surface of nongraphitic carbon. The results demonstrate that the microcrystalline structure on the surface of nongraphitic carbon undergoes pressure- and shear-induced graphitization, with the degree of graphitization increasing proportionally with the applied loading pressure. Furthermore, the friction film becomes more refined as the pressure increases, resulting in a decrease in friction coefficient and wear rate. These findings provide a theoretical foundation for the effective selection and application of nongraphitic carbon in diverse frictional conditions.