Table of Contents
Textures and Microstructures
Volume 24 (1995), Issue 1-3, Pages 155-165
http://dx.doi.org/10.1155/TSM.24.155

Texture Formation in a Glass Ceramic of Li2O2SiO2 Composition

Institut für Nichtmetallische Werkstoffe, Technische Universität Clausthal, Germany

Received 10 July 1994; Accepted 8 February 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

Glass ceramics of the composition Li2O2SiO2.were prepared with an oriented microstructure. The oriented crystalline phase is orthorhombic lithium disilicate. This orientation was achieved by crystallization of glass fibers and bulk glasses in a temperature gradient and under isothermal conditions. Both bulk and surface crystallization were achieved. Further, oriented crystalline films were prepared on glassy and crystalline substrates by a sol-gel method. Scanning electron microscopy and atomic force microscopy were used to characterize the microstructure. The degree of orientation was investigated by X-ray pole figure measurements from which orientation distribution functions and inverse pole figures were calculated. The (002) plane of the surface crystallized material shows a strong fiber texture parallel to the surface of the sample.