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  

The tribological properties of nitrogen ion implantation on Cr/CrSiN composite coating

作　　者：王振[1] 蔡振兵[1,2] 沈明学[1] 彭金方[1] 李彦军[3] 朱旻昊[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室摩擦学研究所,四川成都610031 [2]重庆大学机械传动国家重点实验室,重庆400044 [3]成都铁路局重庆机器制造厂,重庆400053

出　　处：《功能材料》2012年第19期2689-2693,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51005192;U1134202);长江学者和创新团队发展计划资助项目(IRT1178);机械传动国家重点实验室2010年度开放基金资助项目(SKLMT-KFKT-201007)

摘　　要：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。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.

关 键 词：离子注入 CrSiN涂层 摩擦磨损 磨损机理 

分 类 号：TH117.3[机械工程—机械设计及理论]