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在ＤＤ２镍基单晶材料上采用阴极电弧镀（ＡＰＤ）制备ＮｉＣｒＡｌＹ防护涂层，对扩散处理涂层、塑变处理涂层以及塑变与时效处理涂层的相组成与组织结构以及密度的变化进行了系统的试验研究。结果指出，塑变不仅能使扩散处理中析出的ＮｉＡｌ回溶到基体中去，同时还能明显改变涂层的致密度，使密度提高约３０％。塑变Ｎｉ３Ａｌ基体在随后的高温（１１００℃）时效处理中，又发生ＮｉＡｌ相的重新析出，ＮｉＡｌ相的析出使基体获得弥散强化
The NiCrAlY protective coating was prepared on the DD2 nickel base single crystal material by cathodic arc plating (APD). The phase composition, microstructure and density of diffusion coating, plasticizing treatment coating and plasticizing and aging treatment coating Conducted a systematic experimental study. The results indicate that the plastic deformation not only enables NiAl precipitated in the diffusion process to be dissolved into the matrix, but also significantly changes the density of the coating to increase the density by about 30%. In the subsequent aging treatment at high temperature (1100 ℃), the NiAl phase re-precipitated and the precipitation of NiAl phase made the matrix get dispersion strengthened