采用球 平面接触微动设备 ,对 31 6L不锈钢在不同NaCl溶液中微动过程力学化学交互作用进行了研究 ,并解析了材料微动损伤速率与溶液腐蚀特性之间的关系 .结果表明 ,材料微动过程力学化学作用相互促进 ,力学损伤在微动损伤过程中占居主导作用 .强碱性、强酸性及溶液富含Cl- 的情况下 ,都可导致材料严重微动损伤 ,而在中性条件下 ,力学因素对化学损伤促进作用最为明显 . The mechanical and chemical interaction of 31 6L stainless steel in different NaCl solutions was investigated by using ball plane contact micro-motion equipment, and the relationship between the rate of material micro-damage and the solution corrosion properties was analyzed.The results showed that the micro Dynamic mechanical and chemical interactions promote each other, mechanical damage plays a dominant role in the process of fretting damage.High alkalinity, strong acidity and solution-rich Cl- can lead to serious fretting damage, while in neutral Under the conditions of mechanical factors to promote the most obvious chemical damage.