Bulletin of the Chinese Ceramic Society, Volume. 41, Issue 11, 3819(2022)
Crystallization Kinetics of Lithium Aluminum Silicate Transparent GlassCeramics
The crystallization kinetics of lithium aluminum silicate Li2OAl2O3SiO2ZrO2P2O5 transparent glassceramics was analyzed by using the classical equation (JohnsonMehlAvrami). The influence of crystallization temperature on the crystallization behavior of glass was studied by DSC, XRD and SEM. The results show that Li2Si2O5 and Li2SiO3 precipitate at lower initial crystallization temperature. With the increase of crystallization temperature, the main crystal phase changes to LiAlSi4O10, Li2SiO3 disappears and the crystal size decreases, and the transmittance of glassceramics increases from 89.3% to 90.6% at 550 nm. The activation energies of crystallization of Li2Si2O5 and LiAlSi4O10 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.
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PENG Zhigang, YUAN Jian, DU Xiaoou, ZHENG Weihong, ZHANG Maosen, XUE Ruifeng, SHI Lianying. Crystallization Kinetics of Lithium Aluminum Silicate Transparent GlassCeramics[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(11): 3819
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Received: Aug. 13, 2022
Accepted: --
Published Online: Dec. 26, 2022
The Author Email: Zhigang PENG (gangzhp@163.com)
CSTR:32186.14.