Paper Title:
Tracer Diffusion in Nonstoichiometric Intermetallic Compounds with Random Mixing on Each Sublattice
  Abstract

Tracer di f fusion by way of vacancies is invest igated in B2 intermetal l ics AB by means of a kinet ic equat ion approach. The model used is one wi th four inter sub-lat t ice frequencies where each sub-lat t ice is t reated as a random al loy. Coupl ing is achieved between the two types of cycles, i .e. , wi th the vacancy start ing on one sub- lat t ice and finishing on ei ther sub-lat t ice and wi th a vacancy start ing on the other sub-lat t ice and finishing on ei ther sub-lat t ice. An expression for the t racer cor relat ion factor is derived in terms of atom vacancy exchange frequencies and atomic concentrat ions. Resul ts from this expression are compared wi th Monte Car lo calculat ions and also resul ts f rom a previous Manning-type random al loy approach to the problem.

  Info
Periodical
Defect and Diffusion Forum (Volumes 247-248)
Edited by
David J. Fisher
Pages
21-28
DOI
10.4028/www.scientific.net/DDF.247-248.21
Citation
I.S. Sandhu, D.K. Chaturvedi, I. V. Belova, G. E. Murch, "Tracer Diffusion in Nonstoichiometric Intermetallic Compounds with Random Mixing on Each Sublattice", Defect and Diffusion Forum, Vols. 247-248, pp. 21-28, 2005
Online since
December 2005
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