Table of Contents
Textures and Microstructures
Volume 14–18
http://dx.doi.org/10.1155/TSM.14-18.383

Texture Analysis in Alumina Plasma Sprayed Coatings

1Ecole Nationale Supérieure des Mines de Saint-Etienne, Saint-Etienne Cédex 2 F 42023, France
2Institut National des Sciences Appliquées de Lyon, Villeurbanne Cédex F 69621, France

Copyright © 1991 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

An original investigation of the crystallographic texture in alumina plasma sprayed coatings has been made by X-ray diffraction and transmission electron microscopy. A fibre texture has been revealed in these alumina coatings. The (100) base plane of γ Al2O3 is predominently parallel to the. coating surface. The texture intensity increases from the surface in contact with the metal to the top surface of the coatings. After annealing the textured γ Al2O3 coatings at 1200℃, we have studied the relationships between γ and α Al2O3 phases.