@article{Cai2026, 
author = {Yiyang Cai and Xiaoqiang Song and Mingfei Cheng and Congao Jin and Jiaqing Yang and Changzhi Yin and Weicheng Lei and Yaodong Liu and Zihang Chen and Wenzhong Lu and Wen Lei},
title = {Rapid densification mechanism of SrZn0.8Mg0.2Si3O8 microwave dielectric ceramics},
year = {2026},
journal = {Journal of Materiomics},
volume = {12},
number = {4},
keywords = {Microwave dielectric ceramics, Liquid-phase sintering, Rapid densification},
url = {https://www.sciopen.com/article/10.1016/j.jmat.2026.101223},
doi = {10.1016/j.jmat.2026.101223},
abstract = {SrZn0.8Mg0.2Si3O8 ceramics capable of rapid densification under atmospheric pressure, while maintaining excellent microwave dielectric properties were investigated. In-situ scanning electron microscopy and high-resolution transmission electron microscopy confirm the formation of a liquid phase during sintering and clarify its chemical composition. Rapid densification originates from intrinsic generation of this liquid phase in SrZn0.8Mg0.2Si3O8 during the sintering process. Because the liquid phase is produced internally, most of it spontaneously crystallizes into the parent phase during cooling. Therefore, the final microstructure consists predominantly of the SrZn0.8Mg0.2Si3O8 phase with only a small residual amorphous phase. SrZn0.8Mg0.2Si3O8 ceramics thus exhibit excellent microwave dielectric properties (εr = 6.07 ± 0.02, Q×f = 69,350 ± 650 GHz (f = 16.37 GHz), τf = −27.6 ± 1.4 × 10−6 ℃−1, holding time(H.T.) = 1 min), which are superior to those of conventional composite ceramics that rely on added low-melting-point oxides to induce liquid-phase sintering. In addition, rapid densification enables grain refinement while maintaining high relative density. This microstructural feature improves mechanical strength and electrical breakdown strength and suppresses long range ionic diffusion during heterogeneous cofiring integration.}
}