采用3 kW射频电源在经真空电弧镀涂敷了NiCrAlY过渡层的涡轮和导向叶片上沉积ZrO2陶瓷层.对NiCrAlY涂层进行喷丸形变处理,研究了喷丸工艺对NiCrAlY涂层显微结构、相结构、残余应力和高温氧化性能的影响.结果表明:喷丸形变处理使涂层表面拉应力变为压应力;消除了NiCrAlY涂层气孔等缺陷,表面粗糙度Rz值由16.4 μm减小到3.3 μm;喷丸后涂层抗氧化性提高3倍.
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