Diffusion induced segregation in the case of the ternary system sphalerite,chalcopyrite and cubanite |
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Authors: | T Blesgen S Luckhaus K Bente |
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Abstract: | A mathematical model for describing natural and experimental diffusion induced segregation (DIS) in the case of a (Zn,Fe)S single crystal with three coexisting phases is derived. As main result, a new and quite general segregation principle for ternary systems is discovered where one phase has a flat free energy density and serves as catalyst for the segregation of the other two phases. The model includes also a stochastic noise term to represent fluctuations of the copper concentration. Numerical simulations in 2‐d underline the physical significance of the model and allow to make quantitative predictions. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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Keywords: | structure gradients phase transitions ternary systems |
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