Atomic diffusion in ceramic oxides

Abstract

Diffusion mechanisms in ceramic oxides are considered and available data in the literature broadly reviewed. It is noted that a simple correlation for cation self-diffusion in oxides based on structural considerations is not likely to eventuate, although some correlation for oxygen diffusion should exist. Greater sensitivity is required to study diffusion in oxides than can be obtained by conventional tracer lapping. The less common methods that may be applicable are reviewed.