The influence of KBS glass on the thermal and bending strength behaviors of MgAl2O4 microwave dielectric ceramics

Mingxia Wang; Chaowei Zhong; Shuren Zhang

doi:10.1117/12.3015269

6 February 2024 The influence of KBS glass on the thermal and bending strength behaviors of MgAl₂O₄ microwave dielectric ceramics

Mingxia Wang, Chaowei Zhong, Shuren Zhang

Author Affiliations +

Proceedings Volume 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023); 1297933 (2024) https://doi.org/10.1117/12.3015269
Event: 9th International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 2023, Guilin, China

Abstract

Optimization of the thermal and mechanical performance of microwave dielectric ceramics is a critical challenge for the miniaturization and integration of electronic components. In this work, a system of new MgAl₂O₄-xKBS (x=0, 4, 8, 12wt. %) samples was manufactured through the solid-state method. The study extensively explores the impacts of KBS addition on the microstructure, heat conduction, bending strength, and microwave dielectric properties of the MgAl₂O₄- xKBS samples. All the ceramics showed the phase of MgAl₂O₄ with spinel structure in the Fd3m space group. The whole pattern fitting results studied by jade 6.5 software illustrated that the porosity increases first and then decreases with an increase in glass content, whereas the crystallinity keeps the downward trend. The SEM images indicate the doping of KBS promoted the densification sintering process of ceramics and the dense structure was obtained when x=4. As sintered at 1450 ℃ for 4h, the MgAl₂O₄-4KBS ceramic displayed outstanding performance: thermal conductivity of 16.15 W/mK, bending strength of 212 MP, dielectric constant of 7.87, and dielectric loss of 4.99 ⅹ 10^-4 at the resonant frequency (12.52 GHz).

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Mingxia Wang, Chaowei Zhong, and Shuren Zhang "The influence of KBS glass on the thermal and bending strength behaviors of MgAl₂O₄ microwave dielectric ceramics", Proc. SPIE 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 1297933 (6 February 2024); https://doi.org/10.1117/12.3015269

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