Abstract
When an initially homogeneous oxide solid solution is brought under an oxygen potential gradient, a redistribution of cations and cationic vacancies can occur in the material until a steady state has been reached. This paper concerns a computer simulation of the gradual segregation development leading to the steady state. The numerical model has been tested with the (Co,Mg)O system for which thermodynamic and kinetic results are available. This has allowed us to follow the time evolution of concentration profiles of cations in the material and to estimate the time required to reach the steady state for which the concentration profiles remain constant.
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