Crystallographic-Orientation-Dependent Dissolution Behavior of Sapphire in Anorthite Liquid Containing Chromia
J K. Park, D H. Kim, H Y. Lee, J Blendell, C A. Handwerker
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.
, Kim, D.
, Lee, H.
, Blendell, J.
and Handwerker, C.
Crystallographic-Orientation-Dependent Dissolution Behavior of Sapphire in Anorthite Liquid Containing Chromia, Journal of the American Ceramic Society
(Accessed November 30, 2023)