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

The effect of the surface treatment on the fretting wear behavior of 316LVM austenitic stain less 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 carburizing 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 316LVMnitridedat430℃ showed the similar Friction behavior as that carbonitrided at 430℃.Even the 316LVM carburized 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 grade316LVM austenitic stainless steels in this experiment