氮离子注入浓度对弹条钢基体Cr/CrSiN复合涂层的摩擦学性能影响研究

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The nitrogen were implanted on the 60Si2Cr steel with different ion implantation and deposition, and Cr/CrSiN composite coatings were prepared used arc ion deposition. The sliding friction test using CETR UMT multi-specimen test system （UNT-3） in dry state with a load of 20N. The tribological properties of substrate and coatings were analyzed. The results showed that the tribologieal properties of the treated steel had im- proved significantly. With increasing of the concentration of ion implantation, the wear resistance of the coating improved. The mechanism of the CrSiN/Cr composite coatings were delamination and abrasion wear.在轨道用扣件弹条钢（60Si2Cr）上注入不同浓度的氮离子,用电弧离子镀技术沉积了Cr过渡层,并在其上制备了CrSiN/Cr复合涂层。在UMT-3多功能摩擦磨损机上对复合层进行了法向载荷为20N的摩擦磨损实验,探讨了经不同氮离子注入浓度后Cr/CrSiN复合涂层摩擦磨损行为和损伤机理,研究发现,经氮离子注入后,复合涂层表面硬度明显的增加,随着离子注入浓度的升高涂层的耐磨性逐渐提高,其磨损机制主要为剥落和磨粒磨损。