Invention Grant
- Patent Title: Li3Mg2SbO6-based microwave dielectric ceramic material easy to sinter and with high q value, and preparation method therefor
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Application No.: US17084655Application Date: 2020-10-30
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Publication No.: US11629102B2Publication Date: 2023-04-18
- Inventor: Cheng Liu , Hongyang Zhang , Qinghui Yang , Lichuan Jin , Yuanxun Li , Huaiwu Zhang
- Applicant: University of Electronic Science and Technology of China
- Applicant Address: CN Chengdu
- Assignee: University of Electronic Science and Technology of China
- Current Assignee: University of Electronic Science and Technology of China
- Current Assignee Address: CN Chengdu
- Agency: Bayramoglu Law Offices LLC
- Priority: CN202010748520.6 20200730
- Main IPC: C04B35/626
- IPC: C04B35/626 ; H01B3/12
Abstract:
A Li3Mg2SbO6-based microwave dielectric ceramic material easy to sinter and with high Q value, and a preparation method thereof are disclosed. A chemical formula of the material is Li3(Mg1-xZnx)2SbO6, wherein 0.02≤x≤0.08. The preparation method includes: 1) mixing and ball-milling Sb2O3 and Li2CO3 according to a chemical ratio and then drying, and conducting pre-sintering to obtain a Li3SbO4 phase; and 2) mixing and ball-milling MgO, ZnO and Li3SbO4 powder according a chemical ratio of Li3(Mg1-xZnx)2SbO6 and then drying, conducting granulation and sieving after adding an adhesive, pressing into a cylindrical body, and sintering the cylindrical body into ceramic in the air at 1325° C. and under normal pressure, wherein a dielectric constant is 7.2-8.5, a quality factor is 51844-97719 GHz, and a temperature coefficient of resonance frequency is −14-1 ppm/° C.
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