锂铝硅透明微晶玻璃析晶动力学研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (11): 3819-3825.

所属专题：玻璃

锂铝硅透明微晶玻璃析晶动力学研究

彭志钢^1,2, 袁坚^1,2, 杜晓欧², 郑伟宏^1,2, 张茂森², 薛瑞锋², 史连莹²

1.武汉理工大学硅酸盐建筑材料国家重点实验室,武汉 430070;
2.河北省沙河玻璃技术研究院,邢台 054100

收稿日期:2022-08-13 修订日期:2022-08-30 出版日期:2022-11-15 发布日期:2022-12-12
通信作者: 袁坚,博士,教授。E-mail:248725407@qq.com
作者简介:彭志钢(1983—),男,高级工程师。主要从电子玻璃/微晶玻璃方面的研究。E-mail:gangzhp@163.com
基金资助:
硅酸盐建筑材料国家重点实验室(武汉理工大学)开放基金(2011DA105356)

Crystallization Kinetics of Lithium Aluminum Silicate Transparent Glass-Ceramics

PENG Zhigang^1,2, YUAN Jian^1,2, DU Xiaoou², ZHENG Weihong^1,2, ZHANG Maosen², XUE Ruifeng², SHI Lianying²

1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;
2. Shahe Glass Technology Research Institute, Xingtai 054100, China

Received:2022-08-13 Revised:2022-08-30 Online:2022-11-15 Published:2022-12-12

摘要/Abstract

摘要： 本文利用经典方程(Johnson-Mehl-Avrami)分析了非化学计量的锂铝硅Li₂O-Al₂O₃-SiO₂-ZrO₂-P₂O₅透明微晶玻璃的析晶动力学,采用DSC、XRD和SEM研究了晶化温度对玻璃析晶行为的影响。结果表明:在较低的起始析晶温度下Li₂Si₂O₅和Li₂SiO₃析出,随晶化温度的升高,主晶相转变为LiAlSi₄O₁₀,Li₂SiO₃晶相消失,晶体尺寸变小,在550 nm处微晶玻璃透过率由89.3%升高到90.6%;利用Kissinger方法计算出的Li₂Si₂O₅和LiAlSi₄O₁₀的析晶活化能分别为349.5 kJ/mol和184.2 kJ/mol,平均晶体生长指数分别为3.05和1.42。

关键词: Li₂O-Al₂O₃-SiO₂-ZrO₂-P₂O₅, 透明微晶玻璃, 析晶动力学, 析晶行为, 活化能

Abstract: The crystallization kinetics of lithium aluminum silicate Li₂O-Al₂O₃-SiO₂-ZrO₂-P₂O₅ 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 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 glass-ceramics 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.

Key words: Li₂O-Al₂O₃-SiO₂-ZrO₂-P₂O₅, transparent glass-ceramics, crystallization kinetics, crystallization behavior, activation energy

中图分类号:

TQ171

彭志钢, 袁坚, 杜晓欧, 郑伟宏, 张茂森, 薛瑞锋, 史连莹. 锂铝硅透明微晶玻璃析晶动力学研究[J]. 硅酸盐通报, 2022, 41(11): 3819-3825.

PENG Zhigang, YUAN Jian, DU Xiaoou, ZHENG Weihong, ZHANG Maosen, XUE Ruifeng, SHI Lianying. Crystallization Kinetics of Lithium Aluminum Silicate Transparent Glass-Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(11): 3819-3825.

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锂铝硅透明微晶玻璃析晶动力学研究

Crystallization Kinetics of Lithium Aluminum Silicate Transparent Glass-Ceramics

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