Tribology Letters ( IF 2.9 ) Pub Date : 2021-07-12 , DOI: 10.1007/s11249-021-01478-y Michael Vigdorowitsch 1, 2, 3 , Valery V. Ostrikov 2, 4 , Sergey N. Sazonov 2 , Valentin V. Safonov 5 , Vladimir I. Orobinsky 6
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Abstract
Graphite- and graphene-based surface protective films are shown to undergo different tangent impacts in working units and mechanisms. The thicker the graphite film is, the more it is subjected to deterioration because tangential components of acting forces turn into normal ones because of distortion of the graphite lattice and elasticity of the interlayer van der Waals bonds. Critical pressure of sliding friction force on the film has been estimated according to real conditions in a combustion engine. The amplification effect has been evaluated and shown to be roughly proportional to a number of layers in the film. The function-amplifier has been constructed, its asymptotical behaviour at small and big number of layers has been analysed. An expression in quadrature representing the working surface wear on the basis of deteriorated film area and working pressure with its fluctuations has been proposed. Its structure is related to a mutual correction of factors related to how (i) intensively and (ii) extensively the surface fragments are affected through the wear.
Graphic Abstract
中文翻译：
碳基纳米片如何保护：机械模型
摘要
石墨和石墨烯基表面保护膜显示出在工作单元和机制中受到不同的切线冲击。石墨膜越厚，由于石墨晶格的扭曲和层间范德华键的弹性，作用力的切向分量变为正常分量，因此它越容易劣化。根据内燃机中的实际条件估算了薄膜上滑动摩擦力的临界压力。放大效果已经过评估并显示与薄膜中的层数大致成正比。构建了函数放大器，分析了其在小层数和大层数下的渐近行为。提出了基于劣化膜面积和工作压力及其波动的工作表面磨损的正交表达式。它的结构与相互修正有关的因素有关，如何（i ) 密集和 ( ii ) 广泛地影响表面碎片通过磨损。
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