Table of Contents
Textures and Microstructures
Volume 25 (1995), Issue 1, Pages 25-32
http://dx.doi.org/10.1155/TSM.25.25

Textures of Phases in Al2O3 - ZrO2 (Y2O3) Eutectic Composites

Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow district 142432, Russia

Received 20 June 1995

Copyright © 1995 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Crystallograhic textures of phases in eutectics Al2O3 + ZrO2 (Y2O3) were investigated by means of X-ray diffraction. In all studied eutectic polycrystalls (grown from the melt by EFG technique) a preferred orientation [0001] of Al2O3 along the growth direction in all the samples was revealed for both initial orientations of Al2O3 seeding crystal: <0001> and <1011>. For a cubic ZrO2 there were two types of a preferred orientations: sharp ones, close to <123> with a 6-fold symmetry and more spread <110>. Such a 6-fold symmetry for a cubic phase appears in eutectic due to a joint crystallization.