Fe2O3含量及晶化工艺对无碱铝硅玻璃弹性模量的影响

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (6): 2223-2232.

所属专题：玻璃

Fe₂O₃含量及晶化工艺对无碱铝硅玻璃弹性模量的影响

湛玲丽^1,2, 谭豪¹, 马时宇¹, 韩利雄³, 谢俊^1,2, 熊德华^1,2

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.合浦县硅材料产业技术研究中心,北海 536199;
3.重庆国际复合材料股份有限公司,重庆 400082

收稿日期:2023-04-05 修订日期:2023-04-05 出版日期:2023-06-15 发布日期:2023-06-25
通信作者: 熊德华,博士,研究员。E-mail:xiongdehua2010@gmail.com
作者简介:湛玲丽(1996—),女,硕士研究生。主要从事微晶玻璃的研究。E-mail:zhanlingli@whut.edu.cn
基金资助:
广西科技基地和人才专项(桂科AD22035003)

Effects of Fe₂O₃ Content and Crystallization Process on Elastic Modulus of Alkali-Free Aluminosilicate Glass

ZHAN Lingli^1,2, TAN Hao¹, MA Shiyu¹, HAN Lixiong³, XIE Jun^1,2, XIONG Dehua^1,2

1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;
2. Hepu Research Center for Silicate Materials Industry Technology, Beihai 536199, China;
3. Chongqing Polycomp International Co., Ltd., Chongqing 400082, China

Received:2023-04-05 Revised:2023-04-05 Online:2023-06-15 Published:2023-06-25

摘要/Abstract

摘要： 选用CaO-MgO-Al₂O₃-SiO₂(CMAS)体系无碱铝硅玻璃为研究对象,设计8组Fe₂O₃组分变量,利用高温熔融法制备试验样品。利用XRD、SEM、TG-DSC等测试方法,先后对无碱玻璃样品的物相、析晶动力学、析晶行为和弹性模量等物化性能进行测试分析,进而探讨Fe₂O₃含量及晶化处理对无碱玻璃弹性模量的影响。结果表明:适量添加Fe₂O₃可以提升CMAS体系无碱玻璃的弹性模量,Fe₂O₃的质量分数为1.50%(F-6#)时,F-6#无碱玻璃弹性模量最大值为97.87 GPa,析晶活化能为347.1 kJ/mol,析晶指数n为1.383 4,为表面析晶。经整体析晶法晶化处理后,F-6#微晶玻璃析出的主晶相为钙长石相(CaAl₂Si₂O₈),晶体尺寸为200~400 nm;经烧结法晶化处理后,F-6#微晶玻璃析出的主晶相为钙长石相(CaAl₂Si₂O₈),晶体尺寸为300~500 nm。随着热处理温度的升高,析出主晶相数量变多,尺寸变大,但主晶相种类并未改变。由于钙长石的弹性模量小于基础玻璃,F-6#无碱玻璃析晶后所得微晶玻璃样品的弹性模量有所降低。

关键词: 无碱玻璃, CaO-MgO-Al₂O₃-SiO₂, 铝硅玻璃, 弹性模量, 晶化

Abstract: In this work, CaO-MgO-Al₂O₃-SiO₂ (CMAS) system alkali-free aluminosilicate glass was selected as the research object. Eight groups of Fe₂O₃ component variables were designed, and the experimental samples were prepared by high temperature melting method. XRD, SEM, TG-DSC and other test methods were used to tested and analyzed the phase, crystallization kinetics, crystallization behavior and elastic modulus of alkali-free glass samples, and then the effects of Fe₂O₃ content and crystallization treatment on the elastic modulus of alkali-free glass were discussed. The results show that the appropriate addition of Fe₂O₃ improves the elastic modulus of CMAS system alkali-free glass. When the mass fraction of Fe₂O₃ is 1.50% (F-6#), the maximum elastic modulus of F-6# alkali-free glass is 97.87 GPa, the crystallization activation energy is 347.1 kJ/mol, and the crystallization index n is 1.383 4, which is surface crystallization.After crystallization treatment by bulk crystallization method, the main crystalline phase precipitated from F-6# glass-ceramics is anorthite phase (CaAl₂Si₂O₈), and the crystal size is 200~400 nm. After crystallization treatment by sintering method, the main crystalline phase precipitated from F-6# glass-ceramics is anorthite phase (CaAl₂Si₂O₈), and the crystal size is 300~500 nm. With the increase of heat treatment temperature, the number and size of the precipitated main crystal phase increase, but the type of the main crystalline phase keeps unchanged. However, because the elastic modulus of anorthite is smaller than that of the base glass, the elastic modulus of the glass-ceramics obtained after crystallization of F-6# alkali-free glass decreases.

Key words: alkali-free glass, CaO-MgO-Al₂O₃-SiO₂, aluminosilicate glass, elastic modulus, crystallization

中图分类号:

TQ171

湛玲丽, 谭豪, 马时宇, 韩利雄, 谢俊, 熊德华. Fe₂O₃含量及晶化工艺对无碱铝硅玻璃弹性模量的影响[J]. 硅酸盐通报, 2023, 42(6): 2223-2232.

ZHAN Lingli, TAN Hao, MA Shiyu, HAN Lixiong, XIE Jun, XIONG Dehua. Effects of Fe₂O₃ Content and Crystallization Process on Elastic Modulus of Alkali-Free Aluminosilicate Glass[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(6): 2223-2232.

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Fe₂O₃含量及晶化工艺对无碱铝硅玻璃弹性模量的影响

Effects of Fe₂O₃ Content and Crystallization Process on Elastic Modulus of Alkali-Free Aluminosilicate Glass

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