Numerical Determination of Intrinsic Diffusion in Fe-Cr-Al Systems

Abstract:

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The intrinsic diffusion coefficients in diffusion aluminide coatings based on Fe-30Cr were determined at 1000oC. The diffusion fluxes were given by the Nernst Planck formulae and the Darken method for multicomponent systems was applied. This paper summarizes some numerical results to determine the composition dependent diffusivities in Fe-Cr-Al systems. The method presented in this study to obtain average intrinsic diffusion coefficients is as an alternative to the Dayananda method. Our method based on empirical parameters allowed us to predict the concentration profile during the interdiffusion process.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 297-301)

Edited by:

Andreas Öchsner, Graeme E. Murch, Ali Shokuhfar and João M.P.Q. Delgado

Pages:

948-953

DOI:

10.4028/www.scientific.net/DDF.297-301.948

Citation:

B. Wierzba et al., "Numerical Determination of Intrinsic Diffusion in Fe-Cr-Al Systems", Defect and Diffusion Forum, Vols. 297-301, pp. 948-953, 2010

Online since:

April 2010

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Price:

$35.00

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