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- Title
锂铝硅透明微晶玻璃析晶动力学研究.
- Authors
彭志钢; 袁 坚; 杜晓欧; 郑伟宏; 张茂森; 薛瑞锋; 史连莹
- Abstract
The crystallization kinetics of lithium aluminum silicate Li2 O-Al2 O3 -SiO2 -ZrO2 -P2 O5 transparent glass-ceramics was analyzed by using the classical equation (Johnson-Mehl-Avrami). The influence of crystallization temperature on the crystallization behavior of glass was studied by DSC, XRD and SEM. The results show that Li2 Si2 O5 and Li2 SiO3 precipitate at lower initial crystallization temperature. With the increase of crystallization temperature, the main crystal phase changes to LiAlSi4 O10, Li2 SiO3 disappears and the crystal size decreases, and the transmittance of glass-ceramics increases from 89. 3% to 90. 6% at 550 nm. The activation energies of crystallization of Li2 Si2 O5 and LiAlSi4 O10 are calculated by Kissinger method to be 349. 5 kJ/mol and 184. 2 kJ/mol, and the average crystal growth indices are 3. 05 and 1. 42, respectively.
- Subjects
GLASS-ceramics; CRYSTALLIZATION kinetics; CRYSTAL growth; ALUMINUM silicates; ACTIVATION energy; LITHIUM silicates
- Publication
Bulletin of the Chinese Ceramic Society, 2022, Vol 41, Issue 11, p3819
- ISSN
1001-1625
- Publication type
Article