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Ultralow-temperature sintered microwave dielectric material and preparation method thereof
The invention belongs to the field of electronic ceramics and manufacturing thereof, and particularly provides an ultralow-temperature sintered microwave dielectric ceramic material and a preparationmethod thereof, in order to overcome the defect of generally higher sintering temperature of the existing microwave ceramic material and realize ultralow-temperature sintering at the temperature of lower than 670 DEG C. The principal crystalline phase of the ceramic material is Ba3V2O8, a low-melting-point compound Li2CO3 accounting for 6-12wt% of the mass of the principal crystalline phase is added to form a liquid phase to promote grain growth, the sintering temperature is greatly reduced, ultralow-temperature sintering at 650-670 DEG C is realized, and the microwave performance is excellent; meanwhile, by adding Li2CO3, the temperature coefficient of resonance frequency of the ceramic material can be adjusted, a near-zero value can be obtained, and the applicability of the material is greatly expanded; and finally, the ultralow-temperature sintered microwave dielectric material provided by the invention is simple in preparation process, all the raw materials are low in cost and richin source, and the material is beneficial to industrial production and can be widely applied to manufacturing of microwave devices such as a low-temperature co-fired ceramic system, a multilayer dielectric resonator and a filter.
本发明属于电子陶瓷及其制造领域，具体提供一种超低温烧结微波介质陶瓷材料及其制备方法，用以克服目前微波陶瓷材料烧结温度普遍偏高的缺点，实现了低于670℃的超低温烧结。本发明陶瓷材料主晶相为BaVO，通过添加占主晶相质量百分比为6～12wt％的低熔点化合物LiCO，形成液相促进晶粒生长，大大降低烧结温度，实现650～670℃的超低温烧结，且具备优异的微波性能；同时，LiCO的添加能够调整陶瓷材料谐振频率温度系数，能够获得近零值，大大扩展材料的适用性；最后，本发明提供的超低温烧结微波介质材料制备工艺简单，所有原料成本低廉、来源丰富，有利于工业化生产，可广泛应用于低温共烧陶瓷体系、多层介质谐振器、滤波器等微波器件的制造。
Ultralow-temperature sintered microwave dielectric material and preparation method thereof
The invention belongs to the field of electronic ceramics and manufacturing thereof, and particularly provides an ultralow-temperature sintered microwave dielectric ceramic material and a preparationmethod thereof, in order to overcome the defect of generally higher sintering temperature of the existing microwave ceramic material and realize ultralow-temperature sintering at the temperature of lower than 670 DEG C. The principal crystalline phase of the ceramic material is Ba3V2O8, a low-melting-point compound Li2CO3 accounting for 6-12wt% of the mass of the principal crystalline phase is added to form a liquid phase to promote grain growth, the sintering temperature is greatly reduced, ultralow-temperature sintering at 650-670 DEG C is realized, and the microwave performance is excellent; meanwhile, by adding Li2CO3, the temperature coefficient of resonance frequency of the ceramic material can be adjusted, a near-zero value can be obtained, and the applicability of the material is greatly expanded; and finally, the ultralow-temperature sintered microwave dielectric material provided by the invention is simple in preparation process, all the raw materials are low in cost and richin source, and the material is beneficial to industrial production and can be widely applied to manufacturing of microwave devices such as a low-temperature co-fired ceramic system, a multilayer dielectric resonator and a filter.
本发明属于电子陶瓷及其制造领域，具体提供一种超低温烧结微波介质陶瓷材料及其制备方法，用以克服目前微波陶瓷材料烧结温度普遍偏高的缺点，实现了低于670℃的超低温烧结。本发明陶瓷材料主晶相为BaVO，通过添加占主晶相质量百分比为6～12wt％的低熔点化合物LiCO，形成液相促进晶粒生长，大大降低烧结温度，实现650～670℃的超低温烧结，且具备优异的微波性能；同时，LiCO的添加能够调整陶瓷材料谐振频率温度系数，能够获得近零值，大大扩展材料的适用性；最后，本发明提供的超低温烧结微波介质材料制备工艺简单，所有原料成本低廉、来源丰富，有利于工业化生产，可广泛应用于低温共烧陶瓷体系、多层介质谐振器、滤波器等微波器件的制造。
Ultralow-temperature sintered microwave dielectric material and preparation method thereof
一种超低温烧结微波介质材料及其制备方法
LI BO (Autor:in) / DENG YAPING (Autor:in) / YAO PENGYU (Autor:in)
01.09.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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