Abstract

A simple statistical model of the diffusion of impurity atoms in the crystal lattice of metals has been developed. The relationship between the diffusion flux of atoms and the gradient of their chemical potential is obtained from the basic principles of statistical thermodynamics. For an ideal solid solution of a substance atoms in a metal, an expression is found for the zero diffusion coefficient, which depends on the square of the temperature. The calculated diffusion coefficients of hydrogen and carbon atoms in iron are in a fairly good agreement with the known experimental data.

中文翻译：

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金属晶格中杂质原子扩散的统计模型及其在铁氢原子和碳原子扩散系数计算中的应用

摘要

已经建立了金属原子晶格中杂质原子扩散的简单统计模型。原子的扩散通量与其化学势梯度之间的关系是根据统计热力学的基本原理获得的。对于物质原子在金属中的理想固溶体，可以找到零扩散系数的表达式，该表达式取决于温度的平方。计算得出的铁中氢和碳原子的扩散系数与已知实验数据相当吻合。