Crystallographic-Orientation-Dependent Dissolution Behavior of Sapphire in Anorthite Liquid Containing Chromia

Published

June 1, 2003

Author(s)

J K. Park, D H. Kim, H Y. Lee, J Blendell, C A. Handwerker

Abstract

Sapphire single crystals were imbedded in anorthite powders containing Cr₂O₃ and then heat-treated at 1600 degrees C. The resultant morphologies of sapphire-anorthite liquid interfaces were corrugated and quite different depending on the crystallographic orientation of sapphire; all the planes perpendicular to the C plane showed finger-like morphologies, while long parallel segments were detached from the basal C plane. The results were interpreted in terms of coherency strain induced ISLI (instability of solid-liquid interface) caused by the alloying of Cr₂O₃ with sapphire. The difference in microstructural evolution depending on crystallographic orientation was explained in terms of strong anisotropy of the solid-liquid interface characteristics.

Citation

Journal of the American Ceramic Society

Volume

86

Issue

No. 6

Pub Type

Journals

Keywords

anisotropy, CIGM, DIGM, dissolution, sapphire

Citation

Park, J. , Kim, D. , Lee, H. , Blendell, J. and Handwerker, C. (2003), Crystallographic-Orientation-Dependent Dissolution Behavior of Sapphire in Anorthite Liquid Containing Chromia, Journal of the American Ceramic Society (Accessed July 21, 2024)