Near-coincidence lattice method for the determination of epitaxy strains during oxidation of metals

A theoretical method is proposed to evaluate the strains due to epitaxy bet ween a metal and its oxide. Based on Bollmann's approach of two adjoining g rains, it uses the quantitative texture analysis of the two materials separ ated by the phase boundary. Our study of the Zr/ZrO2 and Mo/MoO3 systems re veals strong correlations between the criterion of best fit proposed by Bol lmann and the orientation distribution function obtained by a quantitative texture analysis. The results of this study are used in a thermo-mechano-ch emical simulation of the oxidation process of zirconium, which leads to thi s observation: two different zirconia orientations induce two different oxi dation kinetics. (C) 2000 Acta Metallurgica Inc. Published by Elsevier Scie nce Ltd All rights reserved.