Interdiffusion and segregation in materials
Many materials depend on interdiffusion for their formation. In service, the components of many materials segregate as a result of the high temperatures and large driving forces present. This can lead to a degradation of designed properties. In this research program we have been investigating all aspects of interdiffusion and segregation processes in technologically important materials.
Segregation of atomic species to surfaces and grain boundaries is of special interest in the Centre. At present, we are examining cation segregation 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 steel.