The "C" Factor in LeClaire's Theory of Solute Impurity Diffusion

J.R. Cahoon

doi:10.4028/www.scientific.net/DDF.237-240.101

Paper Titles

Interdiffusion between Metals of Widely Different Self-Diffusion Rates
p.62

Diffusional Jumps of Intrinsic Atomic Defects in Ordered Alloys Observed through Anelastic Relaxation Effects
p.74

Ternary Interdiffusion Coefficients in Chosen Ni₃Al-Based Alloys
p.83

The Nonlinear Interplays of Mechanical and Chemical Strains in Diffusion
p.95

The "C" Factor in LeClaire's Theory of Solute Impurity Diffusion
p.101

Nonlinear Field Theory of Stress Induced Diffusion in Crystalline Solids
p.107

Oxygen Self-Diffusion Mechanisms in Silica by First-Principles
p.115

The Effective Interdiffusion Coefficients in Experimental Investigations of Interdiffusion in Ternary Systems
p.121

First Principles Suggestions of Targeted Diffusion Experiments on SiO₂
p.127

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 237-240The "C" Factor in LeClaire's Theory of Solute...

The "C" Factor in LeClaire's Theory of Solute Impurity Diffusion

Abstract:

The "C" factor for the calculation of the relative activation energy for solute impurity diffusion using LeClaire's theory as modified by Burachynsky and Cahoon has been determined for the diffusion of several solutes in FCC Cu , FCC Fe and BCC Fe. Inclusion of the "C" factor results in good agreement between the calculated and experimental values of relative activation energy for impurity diffusion inn the solvents considered. For positive values of relative valence, Z, the value of C is given by C » 20 Z. For negative values of Z, C » 0.