Diffusion of iron and cobalt in an intermetallic compound of Ti-54 at.% Al

Diffusion coefficients of exp 59 Fe and exp 57 Co in an intermetallic compound Ti-54 at.% Al have been determined in the temperature range between 1000-1538K by use of the serial radio-frequency sputter-micro-sectioning technique. In the whole temperature range of the present experiments, the relati...

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Bibliographic Details
Published in:High temperature materials and processes 1999-07, Vol.18 (5-6), p.305-311
Main Authors: Iijima, Y, Lee, C G, Kim, S.-E.,--, Lee, Y.-T.,--, Kim, H.-M.,--
Format: Article
Language:English
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Summary:Diffusion coefficients of exp 59 Fe and exp 57 Co in an intermetallic compound Ti-54 at.% Al have been determined in the temperature range between 1000-1538K by use of the serial radio-frequency sputter-micro-sectioning technique. In the whole temperature range of the present experiments, the relation D sub Ti > D sub Co > D sub Fe has been recognized. The Arrhenius plots of the diffusion coefficients of exp 59 Fe and exp 57 Co show linear relationships which are represented by the equations: D sub Fe =1.30x10 exp -2 exp(-363 kJ mol exp -1 /FT) m exp 2 s exp -1 and D sub Co =1.12x10 exp -3 exp(-318 kJ mol exp -1 /RT) m exp 2 s exp -1 .
ISSN:0334-6455
DOI:10.1515/HTMP.1999.18.5-6.305