In this study, closed-field unbalanced magnetron sputtering was employed to deposit a diamond-like carbon (DLC) film with Cr as the middle layer on three elastomeric substrates, namely nitrile rubber (NBR), fluorine rubber (FKM), and ethylene propylene diene monomer (EPDM) rubber, respectively. In addition, effects of these rubber substrates on the structure and properties of DLC films were investigated. Results revealed that after the bending test, several new cracks are produced on the DLC-coated EPDM rubber and NBR rubber, while debonding is not observed, indicative of the good flexibility and adhesion of DLC films on EPDM rubber and NBR rubber. Furthermore, tribological properties of NBR rubber and EPDM rubber were significantly improved by the DLC film, and almost no film damage was observed on the wear track, while the DLC coated-FKM exhibited severe wear due to the gradual peeling of the coating. Film shedding was caused by the extremely smooth FKM substrate, which led to low film adhesion. Different tribological properties of the coated rubbers were closely related to the difference in surface roughness and mechanical properties of the rubber substrates.

在这项研究中，采用闭场非平衡磁控溅射在三种弹性体基材上沉积以 Cr 为中间层的类金刚石碳 (DLC) 薄膜，即丁腈橡胶 (NBR)、氟橡胶 (FKM) 和乙丙橡胶二烯单体（EPDM）橡胶，分别。此外，还研究了这些橡胶基材对 DLC 薄膜结构和性能的影响。结果表明，弯曲试验后，DLC涂层的三元乙丙橡胶和丁腈橡胶上产生了几处新的裂纹，而没有观察到脱粘现象，表明DLC薄膜在三元乙丙橡胶和丁腈橡胶上具有良好的柔韧性和附着力。此外，DLC 膜显着改善了 NBR 橡胶和 EPDM 橡胶的摩擦学性能，在磨损轨迹上几乎没有观察到膜损坏，而 DLC 涂层的 FKM 由于涂层的逐渐剥落而表现出严重的磨损。薄膜脱落是由极其光滑的 FKM 基材引起的，导致薄膜附着力低。包覆橡胶的不同摩擦学性能与橡胶基材表面粗糙度和力学性能的差异密切相关。