为了研究激光清洗高速列车集电环锈蚀后对表面显微硬度、表面粗糙度、耐腐蚀性能以及表面化学成分的影响，采用1 064 nm脉冲激光对集电环表面锈蚀进行清洗。利用表面粗糙度仪以及显微硬度仪对清洗前后表面粗糙度与显微硬度进行检测，通过电化学工作站对清洗前后进行抗腐蚀性能检测，使用X射线荧光光谱分析表面化学成分。结果表明，经过激光清洗后表面显微硬度达到210.7 HV，高于基材硬度；清洗后表面粗糙度达到Ra 2.5相比未清洗表面降低68.7%；并且激光清洗处理后集电环表面耐腐蚀性能相较于基材得到增强；经过激光清洗后的集电环表面O元素含量与未清洗表面相比发生下降，O含量为3.840%。

In order to study the effects of laser cleaning on the surface microhardness, surface roughness, corrosion resistance and surface chemical composition of the high-speed train slip ring, a 1 064 nm pulsed laser was used to clean the surface of the collector ring. The surface roughness and microhardness were measured before and after cleaning by surface roughness tester and microhardness tester. The corrosion resistance was measured before and after cleaning by an electrochemical workstation, and the surface chemical composition was analyzed by X-ray fluorescence spectroscopy. The results show that the surface microhardness after laser cleaning reaches 210.7 HV, which is higher than the hardness of the substrate. The surface roughness after cleaning reaches Ra 2.5, which is 68.7% lower than that of the uncleaned surface. Moreover, the surface corrosion resistance of the slip ring after laser cleaning is enhanced compared with the substrate. The oxygen content of the slip ring after laser cleaning is decreased compared with the uncleaned surface, and the oxygen content is 3.840%.