Enhancing thermal and dielectric properties of MgO-Al2O3-SiO2-B2O3 glass-ceramics through CuO doping

被引：11

作者：

Shang, Yijing ^{[1
,2
]}

Wang, Mingxia ^{[1
,2
]}

Li, Enzhu ^{[1
,2
]}

Zhong, Chaowei ^{[1
,2
]}

Qin, Tianying ^{[1
,2
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Engn Res Ctr Electromagnet Radiat Control Mat, Chengdu 610054, Peoples R China

[2] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, State Key Lab Elect Thin Films & Integrated Device, Chengdu 610054, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 19期

关键词：

Thermal conductivity; Coefficient of thermal expansion; Dielectric properties; EXPANSION COEFFICIENT; ELECTRICAL-PROPERTIES; CRYSTALLIZATION; MICROSTRUCTURE; FEATURES; IONS;

D O I：

10.1016/j.ceramint.2023.07.175

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：

In this work, (20-x)MgO-20Al2O3-56SiO2-4B2O3-xCuO (x = 0, 0.25, 0.5, 0.75, 1, 1.25 mol%) glass-ceramics were synthesized by solid-state reaction method. The crystallization, microstructure, thermal and dielectric properties of (20-x)MgO-20Al2O3-56SiO2-4B2O3-xCuO glass-ceramics was discussed in detail. It was demonstrated that the CuO lowers the crystallization temperature of alpha-cordierite and promotes the crystallization process of MgO-Al2O3-SiO-B2O3 glass-ceramics. Thus, the crystallization showed a substantial influence on the dielectric properties, as evidenced by an elevation in dielectric constant and a decrease in dielectric loss. Specifically, with the addition of 0.5 mol% CuO, the MgO-Al2O3-SiO-B2O3 glass-ceramics sintered at 1050 degrees C shows excellent properties of: er = 5.04, tand = 2.2 x 10-4, kappa = 3.4 W/mK and alpha = 1.75 x 10-6/degrees C. These works provide valuable insights into the design and development of (20-x)MgO-20Al2O3-56SiO2-4B2O3-xCuO glass-ceramics with tailored properties for structure/function integration in the electronics industry.

引用

页码：32078 / 32085

页数：8

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