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添加质量分数为3.0%的纳米碳化硅(n-SiC)的多元聚四氟乙烯(PTFE)复合材料具有优良的摩擦因数和耐磨性。研究了n-SiC对复合材料摩擦磨损过程中的转移膜、磨损形貌的影响。研究认为,n-SiC在多元PTFE复合材料中的主要作用是:促进PTFE转移膜的形成,以获得低而稳定的摩擦因数;有效提高复合材料的耐热性、承载能力,减少粘着磨损量,提高复合材料的抗微切削能力;促进复合材料的磨损机制由粘着磨损为主向微切削磨损为主的转变。
The polytetrafluoroethylene (PTFE) composite with nano-SiC (n-SiC) with 3.0% mass fraction has excellent friction coefficient and wear resistance. The effect of n-SiC on the transfer film and wear morphology during friction and wear of the composites was investigated. The research shows that the main role of n-SiC in multi-PTFE composites is to promote the formation of PTFE transfer film to obtain a low and stable friction coefficient, to effectively improve the heat resistance, bearing capacity and adhesive wear of the composites, Improve the anti-micro-cutting ability of composite materials; and promote the wear mechanism of composite materials from adhesive wear to micro-cutting wear-based transformation.