A New Method for Determination of Self-diffusion Coefficients in Solid Solutions
- 1 March 1974
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 47 (3) , 600-603
- https://doi.org/10.1246/bcsj.47.600
Abstract
A new method for obtaining the self-diffusion coefficients of A in the AY–BY solid solution has been proposed. In this method, the tracer diffusion of A* and the interdiffusion between AY and BY are carried out simultaneously, and the self-diffusion coefficients are determined as a function of composition over the whole range of composition in a similar way as the Boltzmann-Matano analysis. Since this method employs a diffusion couple consisting of single crystals of AY and BY, one can avoid troubles and errors due to segregation and/or phase separation which are often encountered in experiments using solid solutions as specimens. In order to confirm the validity of the proposed method, Dcl* in the TlCl–TlBr system and DAg* and DNa* in the AgBr–NaBr system have been determined at 400 °C by this method and compared with the results obtained by the conventional method. A good agreement has been found between them.Keywords
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