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Microwave dielectric ceramic and preparation method thereof
The invention provides a microwave dielectric ceramic, which comprises a composite oxide and a modifier, the chemical expression of the composite oxide is (Zn1-xMgx) 2SiO4, and x is more than or equal to 0.1 and less than or equal to 0.8; and the modifier comprises TiO2 and the like. The invention also provides a preparation method of the microwave dielectric ceramic, which comprises the following steps: mixing MgO, ZnO and SiO2 according to the mass ratio for the first time, drying and pre-sintering to obtain a composite oxide; adding a modifier, a binder and a defoaming agent into the composite oxide to obtain a powder mixture, and mixing the powder mixture for the second time to obtain powder slurry; granulating the powder slurry, and performing compression molding to obtain a ceramic body; and discharging glue from the ceramic body, and carrying out pressureless sintering to obtain the microwave dielectric ceramic. Therefore, the microwave dielectric ceramic disclosed by the invention has excellent electrical properties and thermal shock resistance, and the preparation method of the microwave dielectric ceramic can reduce the sintering temperature and realize co-sintering of the ceramic and the plating layer, so that the production cost is reduced.
本发明提供了一种微波介质陶瓷，包括复合氧化物和改性剂，复合氧化物的化学表达式为(Zn1‑xMgx)2SiO4，0.1≤x≤0.8；改性剂包括TiO2等。本发明还提供一种微波介质陶瓷的制备方法，包括：将MgO、ZnO、SiO2按质量比进行第一次混合、干燥并预烧，得到复合氧化物；加入改性剂、粘结剂和消泡剂到复合氧化物中得到粉体混合料，将粉体混合料进行第二次混合，得到粉体浆料；将粉体浆料进行造粒后压制成型，得到陶瓷坯体；将陶瓷坯体排胶后进行无压烧结，得到微波介质陶瓷。借此，本发明微波介质陶瓷具有优异的电学性能及抗热震性能，其制备方法能降低烧结温度，实现陶瓷和镀层的共同烧结，从而降低生产成本。
Microwave dielectric ceramic and preparation method thereof
The invention provides a microwave dielectric ceramic, which comprises a composite oxide and a modifier, the chemical expression of the composite oxide is (Zn1-xMgx) 2SiO4, and x is more than or equal to 0.1 and less than or equal to 0.8; and the modifier comprises TiO2 and the like. The invention also provides a preparation method of the microwave dielectric ceramic, which comprises the following steps: mixing MgO, ZnO and SiO2 according to the mass ratio for the first time, drying and pre-sintering to obtain a composite oxide; adding a modifier, a binder and a defoaming agent into the composite oxide to obtain a powder mixture, and mixing the powder mixture for the second time to obtain powder slurry; granulating the powder slurry, and performing compression molding to obtain a ceramic body; and discharging glue from the ceramic body, and carrying out pressureless sintering to obtain the microwave dielectric ceramic. Therefore, the microwave dielectric ceramic disclosed by the invention has excellent electrical properties and thermal shock resistance, and the preparation method of the microwave dielectric ceramic can reduce the sintering temperature and realize co-sintering of the ceramic and the plating layer, so that the production cost is reduced.
本发明提供了一种微波介质陶瓷，包括复合氧化物和改性剂，复合氧化物的化学表达式为(Zn1‑xMgx)2SiO4，0.1≤x≤0.8；改性剂包括TiO2等。本发明还提供一种微波介质陶瓷的制备方法，包括：将MgO、ZnO、SiO2按质量比进行第一次混合、干燥并预烧，得到复合氧化物；加入改性剂、粘结剂和消泡剂到复合氧化物中得到粉体混合料，将粉体混合料进行第二次混合，得到粉体浆料；将粉体浆料进行造粒后压制成型，得到陶瓷坯体；将陶瓷坯体排胶后进行无压烧结，得到微波介质陶瓷。借此，本发明微波介质陶瓷具有优异的电学性能及抗热震性能，其制备方法能降低烧结温度，实现陶瓷和镀层的共同烧结，从而降低生产成本。
Microwave dielectric ceramic and preparation method thereof
微波介质陶瓷及制备方法
HUANG MINGZHENG (author) / WANG XIUHONG (author)
2023-10-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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