用磁控溅射方法在PCrNi3 MoVA钢表面制备NiCrAlY涂层,涂层在空气中850 ℃恒温氧化100 h,借助XRD、SEM和EDAX对涂层表面氧化膜进行分析,检测其恒温抗氧化能力.结果表明,涂层大大提高了基体的抗氧化性,涂层表面主要生成了与基体粘附性好的Al2O3氧化膜,在柱状晶间隙较大处生成了NiCr2O4氧化膜与Fe2O3氧化膜；同时涂层的Ni元素与基体的Fe元素发生了明显的互扩散,而Cr元素在界面富集,Al元素主要集中在表面和界面,与氧发生反应生成Al2O3.
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