Open Ceramics (Sep 2021)
A novel study of the effect of temperature on the crystal structure of lithium aluminosilicate materials
Abstract
Dense Li2O–Al2O3–SiO2 (LAS) material was obtained in solid state by two sintering methods: conventional and microwave. The cyclical variation in temperature that these materials are subjected to during their useful life could cause changes in their crystalline structure and therefore changing their macroscopic properties. The role played by temperature in the diffraction patterns evolution was investigated through X-Ray thermodiffractometry measurements. Evolution of lattice parameters and crystal structure was determined and correlated with changes in the coefficient of thermal expansion. This work provides a comprehensive view of the thermal history of LAS materials according to the sintering technique used.
