综述了Ni-Al二元系、Ni-Cr-Al三元系、Ni-Co-Cr-Al四元系NiAl相的化学互扩散系数，并在此基础上，借助DICTRA软件的PARROT模块，构建了NiAl相的扩散迁移率数据库，以计算多元系NiAl相的化学互扩散系数。
NiAl phase is a typical Hume-Rothery compound with excellent oxidation-resistant property so this phase is often used as master phase of aluminide coatings. Because diffusion phenomena is extremely important for formation and degradation of aluminide coatings, it is possible to understand the natural characteristics of the diffusion phenomena controlling the degradation of aluminide coatings through chemical diffusion coefficients of NiAl phase obtained. This work reviews chemical diffusion coefficients of NiAl phase in the Ni-Al binary system, the Ni-Cr-Al ternary system, and the Ni-Co-Cr-Al quaternary system. Based on the obtained chemical diffusion coefficients of NiAl phase, the mobility database of NiAl phase is set up using the PARRAT module in the commercial DICTRA software for determining chemical diffusion coefficients of NiAl phase in the multiphase systems.
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