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.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
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)
关键词
表面改性
医用奥氏体不锈钢
微动磨损
surface treatment, medical grade austenitic stainless steels, fretting wear
