建立镍基合金的计算模型,利用固体与分子经验电子理论(EET)计算镍基高温合金特征相的电子结构参数,研究Ta对合金电子参数的影响.结果表明:Ta元素提高了Ni基合金中γ与γ′相最强共价键上共价电子对数nA的统计值n′A以及原子状态组数σN；Ta元素降低了γ′/Ni界面的△ρ′,极大提高了界面上使电子密度保持连续的原子状态数σ,进而提高了γ′/Ni的界面稳定性和γ′相的组织稳定性.
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