纳米和微米La_2O_3颗粒增强镍基复合镀层的摩擦磨损性能  

Friction and Wear Properties of Nano-and Micron-sized La_2O_3 Particles Reinforced Ni Matrix Composite Coatings

作　　者：薛玉君[1] 段明德[1] 李济顺[1] 马伟[1] 

机构地区：[1]河南科技大学,洛阳471003

出　　处：《中国机械工程》2006年第3期311-314,共4页China Mechanical Engineering

基　　金：清华大学摩擦学国家重点实验室开放基金资助项目(SKLT04-03);河南省高校杰出科研人才创新工程项目(2004KYCX006);河南省先进制造技术重点实验室基金资助项目;河南科技大学重大科学前期预研专项(2004ZD003)

摘　　要：用复合电沉积工艺制备了纳米和微米La2O3颗粒增强镍基复合镀层,在销盘式滑动磨损试验机上考察了复合镀层在干摩擦条件下的摩擦磨损性能,用扫描电子显微镜分析了其磨损机理。结果表明:在干摩擦条件下,纳米La2O3颗粒增强复合镀层的摩擦磨损性能明显优于微米La2O3颗粒增强复合镀层;纳米La2O3增强镍基复合镀层的磨损主要表现为轻微磨粒磨损特征,而微米La2O3增强镍基复合镀层的磨损机制为剥层磨损和磨粒磨损。Nanometer and micrometer La2O3 particles reinforced Ni matrix composite coatings were produced by composite electrodeposition. The friction and wear properties of the composite coatings were investigated using a pin--on--disc sliding wear machine under dry friction conditions. The worn surfaces of Ni matrix composite coatings, reinforced with nanometer and micrometer La2O3 particles, were analyzed with a scanning electron microscope （SEM）. The results reveal that the wear mechanism of nanometer La2O3 particles reinforced Ni matrix composite coating is characterized by slight abrasive wear, while that of micrometer La2O3 particles reinforced Ni matrix composite coating is characteristic of delaminate wear and abrasive wear.

关 键 词：镍基复合镀层 La2O3颗粒 摩擦磨损性能 电沉积 

分 类 号：TH117.3[机械工程—机械设计及理论] TQ153.4[化学工程—电化学工业]