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Low-dielectric-loss dielectric ceramic and preparation method thereof
The invention discloses a low-dielectric-loss dielectric ceramic and a preparation method thereof. The chemical composition of the low-dielectric-loss dielectric ceramic meets the general formula of Li < 2 > (Zn < 1-x > Ax) Ti < 3 + y > O < 8 + 2y >, A is Mg or Co, x is larger than or equal to 0.02 and smaller than or equal to 0.08, and y is larger than or equal to 0.13 and smaller than or equal to 0.21. According to the invention, Li-series silicate is used as a main raw material of the dielectric ceramic; a crystal structure based on Li2ZnTi3O8 is used for preparation, so that the ceramic material prepared by the method has ideal dielectric constant epsilon r and quality factor Q * f, the sintering temperature of the ceramic material is reduced by 120-160 DEG C compared with the conventional temperature, the sintering temperature of the ceramic material is ensured to be lower than the melting points of Cu, Ag and the like, further processing is facilitated, the dielectric ceramic with extremely low dielectric loss is finally obtained, and the requirements of actual use are met.
本发明公开了一种低介电损耗介质陶瓷及其制备方法，所述介质陶瓷的化学组成符合通式为：Li2(Zn1‑xAx)Ti3+yO8+2y，其中，A为Mg或Co，x的取值范围为0.02≤x≤0.08，y的取值范围为0.13≤y≤0.21。本发明以Li系硅酸盐作为介质陶瓷的主要原料，以Li2ZnTi3O8为基础的晶体结构进行制备，具有理想的介电常数εr和品质因数Q×f，同时其烧结温度较常规温度降低了120‑160℃，保证了陶瓷材料的烧结温度能低于Cu、Ag等的熔点，便于进一步加工，最终得到具有极低介电损耗的介质陶瓷，满足实际使用的需求。
Low-dielectric-loss dielectric ceramic and preparation method thereof
The invention discloses a low-dielectric-loss dielectric ceramic and a preparation method thereof. The chemical composition of the low-dielectric-loss dielectric ceramic meets the general formula of Li < 2 > (Zn < 1-x > Ax) Ti < 3 + y > O < 8 + 2y >, A is Mg or Co, x is larger than or equal to 0.02 and smaller than or equal to 0.08, and y is larger than or equal to 0.13 and smaller than or equal to 0.21. According to the invention, Li-series silicate is used as a main raw material of the dielectric ceramic; a crystal structure based on Li2ZnTi3O8 is used for preparation, so that the ceramic material prepared by the method has ideal dielectric constant epsilon r and quality factor Q * f, the sintering temperature of the ceramic material is reduced by 120-160 DEG C compared with the conventional temperature, the sintering temperature of the ceramic material is ensured to be lower than the melting points of Cu, Ag and the like, further processing is facilitated, the dielectric ceramic with extremely low dielectric loss is finally obtained, and the requirements of actual use are met.
本发明公开了一种低介电损耗介质陶瓷及其制备方法，所述介质陶瓷的化学组成符合通式为：Li2(Zn1‑xAx)Ti3+yO8+2y，其中，A为Mg或Co，x的取值范围为0.02≤x≤0.08，y的取值范围为0.13≤y≤0.21。本发明以Li系硅酸盐作为介质陶瓷的主要原料，以Li2ZnTi3O8为基础的晶体结构进行制备，具有理想的介电常数εr和品质因数Q×f，同时其烧结温度较常规温度降低了120‑160℃，保证了陶瓷材料的烧结温度能低于Cu、Ag等的熔点，便于进一步加工，最终得到具有极低介电损耗的介质陶瓷，满足实际使用的需求。
Low-dielectric-loss dielectric ceramic and preparation method thereof
一种低介电损耗介质陶瓷及其制备方法
LONG KEWEN (Autor:in) / HU JINWEN (Autor:in)
19.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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