表面改性对医用奥氏体不锈钢微动磨损性能的影响
首发时间:2009-01-20
摘要:采用液压伺服微动试验机,在模拟体液中试验研究了430C渗氮、430C碳氮共渗与500C渗碳等三种表面改性工艺对医用奥氏体不锈钢316LVM微动磨损性能的影响。结果表明,三种表面改性工艺均能明显地提高奥氏体不锈钢的硬度和弹性模量,进而改善其微动磨损性能。其中,430C渗氮与430C碳氮共渗样品的摩擦学性能相似。尽管500C渗碳样品的摩擦系数最低,但430C碳氮共渗的耐磨性最好,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。
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Effect of Surface Treatment on the Fretting Wear Behavior of Medical Grade 316LVM Austenitic Stainless Steel
Abstract:The effect of the surface treatment on the fretting wear behavior of 316LVM austenitic stainless steel was investigated in the Ringer’s solution by using a Servo Hydraulic Dynamic Test machine. Three surface treatment methods were used in the experiments, namely as low-temperature plasma nitriding at 430C, carbonitriding at 430C, and carburising at 500C, respectively. The experimental results indicated that all the treatment methods could effectively improve the hardness and elastic modulus of 316LVM, which in turn enhance its corrosion and wear properties. The 316LVM nitriding at 430C showed the similar friction behaviour as that carbonitriding at 430C. Even the 316LVM carburising at 500C exhibited the lowest friction coefficient, the low-temperature plasma carbonitriding at 430C was the best surface treatment method of three against the fretting wear of medical grade 316LVM austenitic stainless steels in body.
Keywords: Surface treatment Fretting wear Medical grade austenitic stainless steels
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