The failure form of laser coating under repeated impact load were studied.The fail mechanism of surface pitting and surfacial spalling of the pieces under repeated impact load were studied.

• 对激光熔覆涂层试样进行了多次冲击试验,分析和讨论了多冲件表面点蚀损伤机理和多冲件表面剥落损伤机理。