In service, the components of many materials demix as a result of the high temperatures and large driving forces present.

Priority Research Centre for
GEOTECHNICAL AND MATERIALS MODELLING

Interdiffusion and Demixing in Materials

Many materials depend on interdiffusion in their formation. In service, the components of many materials demix as a result of the high temperatures and large driving forces present. This can lead to a degradation of designed properties. In this long-standing program we have been investigating all aspects of the interdiffusion and demixing processes in technologically important materials. At present, we are examining cation demixing processes in the solid electrolytes: yttria-stabilized zirconia and magnesium and strontium doped lanthanum gallate as well as interdiffusion in a number of multicomponent alloys including austenitic stainless steels.