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对镍基高温合金上激光重熔等离子喷涂热障涂层进行研究，并对其高温性能进行了测试．结果表明，ＺｒＯ２陶瓷涂层为细化柱状晶，柱状晶晶界处含Ａｌ、Ｔｉ等元素，ＮｉＣｏＣｒＡｌＹ结合层为奥氏体胞晶．相分析确定形成了立方和四方混合ＺｒＯ２．其高温氧化和热循环性能比等离子喷涂形成的热障涂层显著提高
The research of laser remelting plasma spraying thermal barrier coating on nickel base superalloy was carried out, and its high temperature performance was tested. The results show that the ZrO2 ceramic coating is refined columnar crystals, the columnar grain boundaries contain Al, Ti and other elements, NiCoCrAlY bonding layer is austenite. Phase analysis confirmed the formation of cubic and tetragonal mixed ZrO2. Its high temperature oxidation and thermal cycling performance is significantly enhanced by the thermal barrier coatings formed by plasma spraying