By Topic

Growth kinetics of intermediate compounds at a planar solid-solid or solid-liquid interface by diffusion mechanisms

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Coulet, Andre ; CTM, CNRS, 26 Rue du 141 ème R.I.A., 13331 Marseille Cedex 3, France ; Bouche, Karine ; Marinelli, Francis ; Barbier, Francoise

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.366465 

A diffusional model of interface displacement kinetics is proposed for the growth of n intermediate compounds at an initially planar interface between two semi-infinite phases. The model is based on the solution of Fick’s equations with the restrictive assumptions of simultaneous growth of n intermediate phases, unidirectional diffusion flow, and local equilibrium conditions. The velocity of each interface follows the parabolic law and the (n+1) kinetic coefficients are expressed as a function of boundary concentrations and diffusion coefficients of all the phases via (n+1) nonlinear equations. A parametric study of the kinetic coefficients, corresponding to realistic situations of initial solid-solid or solid-liquid interface, is developed for systems with one or two intermediate layers. If two interacting initial phases α and β are such that the chemical diffusion coefficient Dα (in α) is smaller than Dβ (in β), it is found that the interface velocities are enhanced by: (a) increases in Dβ, (b) increases in the solubility limit in β, and (c) reduced miscibility gaps at the interfaces. Moreover, the widths of the intermediate layers are increased by: (a) decreases in Dβ and (b) increases in the diffusion coefficients and solubility limits in these intermediate phases. © 1997 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:82 ,  Issue: 12 )