Diamond-like carbon (DLC) films are deposited on rubber surfaces to protect the rubber components, and surface pretreatment of the rubber substrates prior to the film deposition can improve the adhesion between the DLC films and the rubber. Thus, the principal purpose of this work concentrates on determining the effects of argon (Ar), oxygen (O₂), nitrogen (N₂), and hydrogen (H₂) plasma pretreatments on the adhesion and friction performance of the DLC films deposited on rubber (DLC/rubber). The results indicated that the Ar plasma pretreatment promoted the formation of a compact layer on the rubber surface. By contrast, massive fillers were exposed on the rubber surface after oxygen or nitrogen plasma pretreatments. Moreover, the typical micrometer-scale patches divided by random cracks were observed on the surface of DLC/rubber, except for the sample pretreated with oxygen plasma. The adhesion of DLC/rubber was found to strengthen with the removal of weak boundary layers and the generation of free radicals on the rubber surface after plasma pretreatment. The tribo-tests revealed that DLC/rubber with O₂, N₂, and H₂ plasma pretreatments cannot achieve optimal friction performance. Significantly, DLC/rubber with Ar plasma pretreatment exhibited a low and stable friction coefficient of 0.19 and superior wear resistance, which was correlated to the high adhesion, good load-bearing of the rubber surface, and the approximate sine function of the surface profile of the DLC film.

类金刚石碳（DLC）膜沉积在橡胶表面上以保护橡胶组分，在膜沉积之前对橡胶基材进行表面预处理可以提高DLC膜与橡胶之间的粘合力。因此，这项工作的主要目的在于确定氩气（Ar），氧气（O ₂），氮气（N ₂）和氢气（H _{2）的影响。}等离子体预处理对沉积在橡胶（DLC /橡胶）上的DLC膜的附着力和摩擦性能的影响。结果表明，Ar等离子体预处理促进了橡胶表面上致密层的形成。相反，在氧或氮等离子体预处理之后，大量的填料暴露在橡胶表面。此外，在DLC /橡胶的表面上观察到了典型的微米级斑块，被随机裂纹分开，除了用氧等离子体预处理的样品外。发现等离子预处理后，DLC /橡胶的附着力随着弱边界层的去除和橡胶表面自由基的产生而增强。摩擦试验表明，DLC /橡胶具有O ₂，N ₂和H ₂等离子预处理无法获得最佳的摩擦性能。重要的是，采用Ar等离子预处理的DLC /橡胶表现出低而稳定的摩擦系数0.19和优异的耐磨性，这与橡胶表面的高附着力，良好的承重性以及橡胶表面轮廓的近似正弦函数有关。 DLC影片。