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Low-temperature sintered low-loss oxyfluoride microwave dielectric ceramic and preparation method thereof
The invention discloses low-temperature sintered low-loss oxyfluoride microwave dielectric ceramic and a preparation method thereof. The phase of the ceramic is of a rock salt cubic structure Li6.5 MgTiNbO8F1.5, the dielectric constant epsilon r ranges from 15.8 to 17.3, the quality factor Q*f ranges from 81,600 GHz to 92,600 GHz, and the temperature coefficient of resonance frequency tau f ranges from -38 ppm/DEG C to -42 ppm/DEG C. The ceramic disclosed by the invention is low in sintering temperature (850-950 DEG C), stable in phase composition, relatively high in quality factor, relatively low in dielectric loss and very good in compatibility with a silver electrode, is prepared by adopting a traditional solid-phase reaction process, is rich in used raw materials and low in cost, is beneficial to industrial production, and is suitable for industrial production; the ceramic can be widely applied to manufacturing of microwave dielectric substrates, filters, antennas and other microwave devices.
本发明公开了一种低温烧结低损耗氟氧化物微波介质陶瓷及其制备方法，该陶瓷的物相为岩盐立方结构Li6.5MgTiNbO8F1.5，介电常数εr范围为15.8～17.3，品质因数Q×f为81600～92600GHz，谐振频率温度系数τf范围为‑38～‑42ppm/℃。本发明陶瓷烧结温度低(850～950℃)、物相组成稳定，具有较高的品质因数，介电损耗较低，与银电极有很好的兼容性，且其采用传统固相反应工艺制备而成，所用原料丰富、成本低廉，有利于工业化生产，可广泛应用于微波介质基板、滤波器、天线等微波器件的制造。
Low-temperature sintered low-loss oxyfluoride microwave dielectric ceramic and preparation method thereof
The invention discloses low-temperature sintered low-loss oxyfluoride microwave dielectric ceramic and a preparation method thereof. The phase of the ceramic is of a rock salt cubic structure Li6.5 MgTiNbO8F1.5, the dielectric constant epsilon r ranges from 15.8 to 17.3, the quality factor Q*f ranges from 81,600 GHz to 92,600 GHz, and the temperature coefficient of resonance frequency tau f ranges from -38 ppm/DEG C to -42 ppm/DEG C. The ceramic disclosed by the invention is low in sintering temperature (850-950 DEG C), stable in phase composition, relatively high in quality factor, relatively low in dielectric loss and very good in compatibility with a silver electrode, is prepared by adopting a traditional solid-phase reaction process, is rich in used raw materials and low in cost, is beneficial to industrial production, and is suitable for industrial production; the ceramic can be widely applied to manufacturing of microwave dielectric substrates, filters, antennas and other microwave devices.
本发明公开了一种低温烧结低损耗氟氧化物微波介质陶瓷及其制备方法，该陶瓷的物相为岩盐立方结构Li6.5MgTiNbO8F1.5，介电常数εr范围为15.8～17.3，品质因数Q×f为81600～92600GHz，谐振频率温度系数τf范围为‑38～‑42ppm/℃。本发明陶瓷烧结温度低(850～950℃)、物相组成稳定，具有较高的品质因数，介电损耗较低，与银电极有很好的兼容性，且其采用传统固相反应工艺制备而成，所用原料丰富、成本低廉，有利于工业化生产，可广泛应用于微波介质基板、滤波器、天线等微波器件的制造。
Low-temperature sintered low-loss oxyfluoride microwave dielectric ceramic and preparation method thereof
一种低温烧结低损耗氟氧化物微波介质陶瓷及其制备方法
LIU PENG (Autor:in) / ZHAI SIMEI (Autor:in) / ZHANG SHUAISHUAI (Autor:in)
28.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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