Self-diffusion of aluminium in the intermetallic compound Fe-48 at.% Al

The self-diffusion coefficient of Al in the B2-type intermetallic compound Fe-48 at.% Al has been determined using the intrinsic diffusion coefficients of Fe and Al and the self-diffusion coefficient of Fe with the help of the Darken-Manning relation. The self-diffusion coefficient of Al in Fe-48 at...

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Bibliographic Details
Published in:Philosophical magazine (Abingdon, England) England), 2003-02, Vol.83 (4), p.477-483
Main Authors: Nakamura, Ryusuke, Iijima, Yoshiaki
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Diffusion in solids
Exact sciences and technology
Metals. Metallurgy
Physics
Self-diffusion in metals, semimetals, and alloys
Transport properties of condensed matter (nonelectronic)
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Summary:The self-diffusion coefficient of Al in the B2-type intermetallic compound Fe-48 at.% Al has been determined using the intrinsic diffusion coefficients of Fe and Al and the self-diffusion coefficient of Fe with the help of the Darken-Manning relation. The self-diffusion coefficient of Al in Fe-48 at.% Al is estimated to be a factor of about 0.6 smaller than that of Fe, and the activation energy for the self-diffusion of Al is obtained to be 280 kJ mol −1 which is a little larger than the value of 262 kJ mol −1 for the self-diffusion of Fe, indicating that the diffusion mechanisms for both components are nearly equal.
ISSN:1478-6435
1478-6443
DOI:10.1080/0141861021000055655