(中国科学院上海冶金研究所，上海 200050)
摘 要: 非配比现象就是许多金属间化合物的组成在一定范围内可变。为更好地预报合金相图，该文根据扩充的Miedema合金元胞模型，用ΔΦ*、Δnws1/3以及ΔZ和RA/RB四个原子参数及计算机模式识别方法，求得非配比和配比的近似判据，并探讨其物理意义。
关键字: 金属间化合物 非配比 原子参数判据
（Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050）
Abstract:Many intermetallic compounds have a composition range of nonstoichiometry. This phenomenon has been studied by an extended Miedema model, using atomic parameters(ΔΦ*, electronegativity difference; Δnws1/3, valence electron density difference; ΔZ and RA/RB) to find regularities by the computered pattern recognition method. The approximate criterion of nonstoichiometry and stoichiometry had been gotten, moreover the physics meaning was discussed.
Key words: intermetallic compound non-stoichiometry atomic parameter
