碳化、氮化与碳氮化对316LVM不锈钢微动腐蚀磨损性能的影响  

Effect of Surface Treatment on the Fretting Wear Behavior of Medical Grade Austenitic Stainless Steels

作　　者：刘静[1] 钱林茂[1] 董汉山[2] Joseph Buhagia 

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]英国伯明翰大学冶金与材料学院,B152TT

出　　处：《摩擦学学报》2009年第5期399-404,共6页Tribology

基　　金：国家自然科学基金资助项目(90923017,50625515,50821063)

摘　　要：采用液压伺服微动试验机,在模拟体液中试验研究了430℃渗氮、430℃氮碳共渗与500℃渗碳等3种表面改性工艺对医用奥氏体不锈钢316LVM微动腐蚀磨损性能的影响.结果表明,3种工艺均可在奥氏体不锈钢表面形成扩展奥氏体相"S相",明显地提高基体硬度和弹性模量,进而改善其微动腐蚀磨损性能.在本文试验条件下,430℃氮碳共渗样品的耐微动腐蚀磨损性能最好,是医用奥氏体不锈钢316LVM抗微动磨损性能最优的表面改性工艺.The effect of the surface treatment on the fretting wear behavior of 316LVM austenitic stainless steel was investigated in the Ringer＇s solution by a Servo Hydraulic Dynamic Test machine. Three kinds of surface treatments were used in the experiments, namely low - temperature plasma nitriding at 430℃, carbonitriding at 430℃, and carburising at 500 ℃, respectively. The experimental results indicated that all the three treatments created a layer of ＂S＂ phase on the sample surface, which effectively improved the hardness and elastic modulus of 316LVM and further enhanced its anti -corrosion and anti -wear properties. The 316LVM nitrided at 430℃ showed the similar friction behavior as that carbonitrided at 430℃. Even the 316LVM carburised at 500 ℃ exhibited the lowest friction coefficient; the low - temperature plasma carbonitrided at 430℃ was the best surface treatment of three against the fretting wear of medical grade 316LVM austenitic stainless steels in this experiment.

关 键 词：表面改性 医用奥氏体不锈钢 微动磨损 

分 类 号：TH117.3[机械工程—机械设计及理论]