激光网格化淬火表面渗硫/纳米微粒复合层的摩擦学性能研究  

Tribological Properties of Laser Gridding Quenched Sulfuration/Nanoparticles Compound Layer

作　　者：乔玉林[1,2] 臧艳[1] 赵玉强[1] 崔庆生[1] 

机构地区：[1]装甲兵工程学院装备再制造国防科技重点实验室,北京100072 [2]装甲兵工程学院机械产品再制造国家工程研究中心,北京100072

出　　处：《摩擦学学报》2014年第2期173-179,共7页Tribology

基　　金：国家自然基金项目(5105397);北京自然科学基金(3122031)资助~~

摘　　要：利用MFT-R4000摩擦磨损试验机考察了激光网格化淬火表面渗硫复合层(简称SLD层)和激光网格化淬火表面渗硫/纳米微粒复合层(简称NLD层)在不同试验载荷时的减摩抗磨性能,利用SEM和XPS分析了不同试验条件下磨损表面形貌和所含元素及其化学价态.结果表明:NLD层不仅在重载荷下的减摩性能比SLD层的优异,其在干摩擦条件下的摩擦系数仅为0.075左右,而且在较低试验载荷下具有很长的使用寿命.磨损表面元素分析发现S元素以硫化物和硫酸盐形式存在,但没有发现Si元素,这表明磨损表面形成了主要由硫化物、硫酸盐和氧化物组成的摩擦化学反应膜,而n-SiO2颗粒在摩擦表面可能起到了"微纳滚珠"的作用.Tribological behaviors under various loads of laser gridding quenched Sulfuration layer （ SLD layer） and laser gridding quenched Sulfuration/ Nanoparticles compound Layer （ NLD layer） were investigated by using a MFT - R4000 machine. The worn surface morphology, elements and chemical valence states were analyzed by scanning electron microscopy and X- ray photoelectron spectrometer. The results show that the NLD layer, which had friction coefficient of 0. 075 under dry friction condition, showed better friction - reduction property than SLD layer under heavy load, and longer service lifetime under light load. A tribo - chemical reaction film was composed of sulfide, sulfate and oxide was observed. The n - SiO2 particles may served as micro/nano rolling - ball on friction surface.

关 键 词：网格化激光淬火 渗硫层 固体润滑 摩擦磨损 纳米SIO2 

分 类 号：TH117.3[机械工程—机械设计及理论]