Effect of MgO/Al2O3 ratio on the crystallization behaviour of Li2O-MgO-Al2O3-SiO2 glass-ceramic and its wettability on Si3N4 ceramic

被引：20
作者：
Sun, Liangbo [1 ,2 ]
Fang, Jian [2 ]
Guo, Songsong [2 ]
Shan, Tipeng [2 ]
Wen, Yue [2 ]
Liu, Chunfeng [1 ,2 ]
Zhang, Jie [1 ,2 ]
机构：
[1] Harbin Inst Technol, Ctr Anal Measurement & Comp, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 14期
基金：
中国国家自然科学基金;
关键词：
Glass-ceramic; Crystallization; Microstructure; Coefficient of thermal expansion; SIC BASED COMPONENTS; SILICON-CARBIDE; LI2O-AL2O3-SIO2; GLASS; THERMAL-EXPANSION; MICROSTRUCTURE; TIO2; TEMPERATURE; AL2O3; LI2O;
D O I：
10.1016/j.ceramint.2022.03.281
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The composition governs the crystallization ability, the type and content of crystal phases of glass-ceramics. Glass-ceramic joining materials have generated more research interest in recent years. Here, we prepared a novel Li2O-MgO-Al2O3-SiO2 glass-ceramic for the application of joining Si3N4 ceramics. We investigated the influence of the MgO/Al2O3 composition ratio on microstructure and crystallization behaviour. The crystallization kinetics demonstrated that the glasses had excellent crystallization ability and high crystallinity. beta-LiAlSi2O6 and Mg2SiO4 were precipitated from the glass-ceramics, and the increase of MgO concentration was conducive to the precipitation of Mg2SiO4. Among the glass-ceramic samples, the thermal expansion coefficient of LMAS2 glass-ceramic was 3.1 x 10(-6)/degrees C, which was very close to that of Si3N4 ceramics. The wetting test showed that the final contact angle of the glass droplet on the Si3N4 ceramic surface was 32. and the interface was well bonded.
引用
收藏
页码：20053 / 20061
页数：9
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