An Analytical Method of Calculating Variable Diffusion Coefficients
- 1 January 1953
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 21 (1), 87-89
- https://doi.org/10.1063/1.1698631
Abstract
The Matano‐Boltzmann method of graphical calculation of diffusion coefficients in solutions is replaced by an analytical method in certain systems. This procedure enables accurate calculation of diffusion coefficients near the concentration extremes. An equation is derived for the diffusion coefficient D as a function of concentration c. The equation predicts a variation of D with c which is not exponential in metallic systems, contrary to the proposal of Wagner. Comparison of D values with those obtained graphically, for the system copper‐nickel, indicates that the graphical values may be appreciably in error at that extreme where the diffusion coefficient is greatest.Keywords
This publication has 6 references indexed in Scilit:
- On the Solution of Diffusion Problems Involving Concentration-Dependent Diffusion CoefficientsJOM, 1952
- A Reinterpretation of Experiments on Intermetallic DiffusionJournal of Applied Physics, 1951
- Theory of Do for Atomic Diffusion in MetalsJournal of Applied Physics, 1951
- Interface and Marker Movements in Diffusion in Solid Solutions of MetalsJOM, 1951
- THE EFFECTS OF CONCENTRATION AND POLYDISPERSITY ON THE DIFFUSION COEFFICIENTS OF HIGH POLYMERSAnnals of the New York Academy of Sciences, 1945
- Zur Integration der Diffusionsgleichung bei variabeln DiffusionscoefficientenAnnalen der Physik, 1894