应用2kW-CO_2激光器,在GH140合金表面进行NiCoCrAlY 包覆涂层重熔处理。结果表明,控制恰当激光工艺参数,可使激光重熔区成分稀释度低,组织细化,涂层致密性、附着力显著提高。从而有效改善了抗蚀性和抗冷热疲劳性,并保持原涂层良好的塑性。
NiCoCrAlY cladding has been remelted on the GH140 alloy surface by2kW—CO2 gas laser.The results show that,by controlling proper laser technologicalparameters,structure can be fined,coating compactness and adhesion be obviously en-hanced and the compositio
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