三元多相Ti-NiAl体系扩散系数的计算
The calculation of the diffusion coefficients in ternary multiphase Ti-NiAl system
摘要：
本文讨论了三元多相体系中扩散系数的确定问题。在文献中，缺乏有关的近似方法，允许确定在这样复杂的系统中的扩散系数的数据。我们提出了质量守恒法（MCA）的组成的差异是线性的相的扩散系数的计算。仅需一个实验结果即可确定扩散数据。该方法在三元Ti-NiAl系统下实施和检验-该系统表征扩散偶Ti-NiAl中出现的三个金属间相。
英文摘要：
In this paper the problem of determination of the diffusion coefficients in a ternary multiphase system is discussed. In the literature there is a lack of data concerning the approximation method which allows to determine diffusion coefficients in such complicated systems. We propose the mass conservation method (MCA) for calculation the diffusivities in phases where the differences in composition is linear. Only one experimental results is needed for determination of the diffusion data. The method is implemented and checked under ternary Ti-NiAl system - this system characterize occurrence three intermetallic phases in diffusion couple Ti-NiAl.
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