Cite this article as: |
Chengzhi Xu, Hongyu Yang, Hongcheng Yang, Linzhuang Xing, Yuan Wang, Zhimin Li, Enzhu Li, and Guorui Zhao, Low-firing and temperature stability regulation of tri-rutile MgTa2O6 microwave dielectric ceramics, Int. J. Miner. Metall. Mater.,(2023). https://doi.org/10.1007/s12613-023-2791-6 |
A glass frit containing Li2O–MgO–ZnO–B2O3–SiO2 component was used to explore the low-temperature sintering behaviors and microwave dielectric characteristics of tri-rutile MgTa2O6 ceramics in this study. The good low-firing effects are presented due to the high matching relevance between Li2O–MgO–ZnO–B2O3–SiO2 glass and MgTa2O6 ceramics. The pure tri-rutile MgTa2O6 structure remains unchanged, and high sintering compactness can also be achieved at 1150oC. We found that the Li2O–MgO–ZnO–B2O3–SiO2 glass not only greatly improves the low-temperature sintering characteristics of MgTa2O6 ceramics but also maintains a high Q×f value while still improving the temperature stability. Typically, great microwave dielectric characteristics when added with 2wt% Li2O–MgO–ZnO–B2O3–SiO2 glass can be achieved at 1150oC: εr = 26.1, Q×f = 34267 GHz, τf = -8.7 ppm/°C.