This study investigates the role of sliding counterbodies, which significantly affect the wear properties and friction of nanocrystalline diamond (NCD) film. The bearing steel balls exhibit a high friction coefficient of 0.12, whereas a ceramic ball of Si₃N₄ achieves an ultralow friction coefficient of 0.06. The evolution of different friction coefficients with different counterbodies is associated with the formation of a tribolayer at the sliding interface. The decreased friction coefficient in NCD films sliding against Si₃N₄ ball is likely linked to the occurrence of lubricating nanostructures, especially the silica-like oxide compounds and graphite-like carbon phases. The findings of this study may provide new avenues for the design and development of wear-resistant and environment-friendly hard carbon films.

中文翻译：

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纳米晶金刚石薄膜中与 Si3N4 球滑动的超低摩擦的摩擦层相关起源

本研究调查了滑动配对体的作用，滑动配对体显着影响纳米晶金刚石 (NCD) 薄膜的磨损性能和摩擦。轴承钢球具有 0.12 的高摩擦系数，而 Si ₃ N ₄陶瓷球的摩擦系数为 0.06 的超低。具有不同反作用体的不同摩擦系数的演变与滑动界面处摩擦层的形成有关。NCD 薄膜与 Si ₃ N ₄滑动的摩擦系数降低球可能与润滑纳米结构的出现有关，尤其是二氧化硅状氧化物和石墨状碳相。该研究结果可能为耐磨环保硬碳膜的设计和开发提供新的途径。