用电弧离子镀方法在炮钢表面制备NiCrAlY涂层,涂层在空气中950℃恒温氧化100h,借助X-射线衍射仪、扫描电镜和能谱仪对涂层表面氧化膜进行分析,检测其高温抗氧化能力.结果表明,电弧离子镀NiCrAlY涂层950℃空气中氧化100h后表面形成Al2O3 Fe2O3和NiCr2O4三种氧化物,涂层大大提高了炮钢的高温抗氧化性；涂层中的Ni元素与基体中的Fe元素发生剧烈互扩散而在界面两侧呈均匀梯度分布,Cr元素在界面富集,Al元素在界面与O反应形成较致密的Al2O3氧化层；由于扩散和氧化作用,涂层中的相由原来的β-NiAl、γ'-Ni3 Al、γ-Ni与α-Cr变为γ'-Ni3 Al、(Ni,Fe)、(Fe,Ni)与α-Cr.
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