… useful correlations for the material constants which describe lattice diffusion and grain
boundary diffusion in metals and ceramics. All three correlations must be regarded as empirical (…

… The diffusion coefficient is normally defined and assumed in this study to be the
proportionality constant in the rate equation written for undirectional mass transfer as follows : …

… does predict rate constants that are in … diffusion constant for the reactants in the media
studied. A free volume theory with transition-state concepts suggests that the diffusion constants of …

… fact that they involve constants which cannot be easily … diffusion coefficients. Another way
to address the problem consists in the use of single empirical linear plots between the diffusion …

… At our knowledge, experimental determinations of Sutherland constant are not available,
because generally, this constant is stated to be either 4 or 6 depending on an intuitive criterion …

… correlations hold only for families of materials with similar mechanistic parameters. A detailed
treatment of effective rate constants … the microscopic rate constant of the rate determining …

… satisfactory theory exists for diffusion in liquids and dense … to develop correlations which
relate the diffusion coefficient to other … to the correlation and prediction of diffusion coefficients in …

… is the working correlation for predicting the self diffusion coefficient in eq 9. The constant C
was … in the section on correlation of binary diffusion coefficients. Methods for predicting the self …

… The experimental diffusion coefficients obtained from this study have also been correlated, …
where a and b are specific constants for each particular diffusing substance and µ j is the …

… We show that time correlation functions and the various self-diffusion con… correlations,
trans-J.. velocity correlations, rotational velocity correlations, and corresponding diffusion constants…