TiN涂层的径向微动行为

对ＧＣｒ１５／４５＃钢和ＧＣｒ１５／离子镀ＴｉＮ涂层的４５钢摩擦副进行了径向微动试验，试验的最大载荷从２００Ｎ到８００Ｎ，循环次数为１０＾５。摩擦磨损试验结果表明，ＴｉＮ涂层的抗塑性变形能力和抗么向微动损伤能力比基体好，ＳＥＭ分析表明，ＴｉＮ涂层的磨屑呈现剥层特征钢试样表现出粘着现象。

Radial Fretting Behavior of TiN Coating

The radial fretting behavior of ion plated TiN coating on AISI 1045 steel substrate sliding against AISI 52100 steel was investigated on a radial fretting test rig developed in our laboratory. The deformation characteristics of the coating was compared with that of AISI 1045 steel substrate at maximum normal load from 200 N to 800N and cycle numbers from 1 to 10 5. As the results, TiN coating is superior to AISI 1045 steel substrate in resisting radial fretting and plastic deformation. SEM observation of the fretted surface morphology indicates that TiN coating is characteristic of delamination during the radial fretting and AISI 1045 steel of adhesion. EDAX analysis of wear debris components shows that oxidation was involved during the radial fretting process of the two materials, which is similar to what has been observed with conventional horizontal fretting. Thus the newly developed test rig is capable of simulating radial fretting satisfactorily.