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LTCC microwave dielectric ceramic material and manufacturing method thereof
The invention provides an LTCC microwave dielectric ceramic material, the reactant raw materials of the microwave dielectric ceramic material comprise BaCO3, Li2CO3, MoO2 and TeO2, the composition expression of the microwave dielectric ceramic material is Ba2LixMoyTe1-yO6, wherein x is more than or equal to 0.8 and less than or equal to 1, and y is more than or equal to 0.3 and less than or equal to 0.7. The invention further provides a manufacturing method of the LTCC microwave dielectric ceramic material. Firstly, Li2CO3 is a low-melting-point oxide and can form a liquid phase during sintering, so that sintering densification is promoted, and the dielectric property of the microwave material can be kept; and secondly, through ion replacement, metal ions with relatively similar chemical properties and physical properties are replaced (such as Mo replaces Te), so that the lattice stacking density can be reduced, the bond strength can be reduced, and the sintering temperature of the ceramic material can be reduced. Therefore, the ceramic material does not need to be added with a sintering aid, sintering densification can be completed at a relatively low temperature of 850-900 DEG C, influence of the sintering aid in the system on the dielectric property of the ceramic material can be greatly reduced, and the ceramic material has excellent performance.
本发明提供了一种LTCC微波介质陶瓷材料，所述微波介质陶瓷材料的反应物原料包括BaCO3、Li2CO3、MoO2和TeO2，其组成表达式为Ba2LixMoyTe1‑yO6，其中，0.8≤x≤1且0.3≤y≤0.7。还提供了一种LTCC微波介质陶瓷材料的制造方法。首先，Li2CO3为低熔点氧化物，在烧结时会形成液相从而促进烧结致密化，并且可以保持微波材料的介电性能；其次，通过离子置换，将化学性质和物理性质较为相似的金属离子进行替换(Mo替换Te)可以降低晶格堆积密度并且降低键强，从而可以降低陶瓷材料的烧结温度。因此，所述陶瓷材料不需要添加烧结助剂，能够在较低温度850℃～900℃下完成烧结致密化，可以极大程度降低体系中的烧结助剂对陶瓷材料介电性能的影响，使其具有优异的性能。
LTCC microwave dielectric ceramic material and manufacturing method thereof
The invention provides an LTCC microwave dielectric ceramic material, the reactant raw materials of the microwave dielectric ceramic material comprise BaCO3, Li2CO3, MoO2 and TeO2, the composition expression of the microwave dielectric ceramic material is Ba2LixMoyTe1-yO6, wherein x is more than or equal to 0.8 and less than or equal to 1, and y is more than or equal to 0.3 and less than or equal to 0.7. The invention further provides a manufacturing method of the LTCC microwave dielectric ceramic material. Firstly, Li2CO3 is a low-melting-point oxide and can form a liquid phase during sintering, so that sintering densification is promoted, and the dielectric property of the microwave material can be kept; and secondly, through ion replacement, metal ions with relatively similar chemical properties and physical properties are replaced (such as Mo replaces Te), so that the lattice stacking density can be reduced, the bond strength can be reduced, and the sintering temperature of the ceramic material can be reduced. Therefore, the ceramic material does not need to be added with a sintering aid, sintering densification can be completed at a relatively low temperature of 850-900 DEG C, influence of the sintering aid in the system on the dielectric property of the ceramic material can be greatly reduced, and the ceramic material has excellent performance.
本发明提供了一种LTCC微波介质陶瓷材料，所述微波介质陶瓷材料的反应物原料包括BaCO3、Li2CO3、MoO2和TeO2，其组成表达式为Ba2LixMoyTe1‑yO6，其中，0.8≤x≤1且0.3≤y≤0.7。还提供了一种LTCC微波介质陶瓷材料的制造方法。首先，Li2CO3为低熔点氧化物，在烧结时会形成液相从而促进烧结致密化，并且可以保持微波材料的介电性能；其次，通过离子置换，将化学性质和物理性质较为相似的金属离子进行替换(Mo替换Te)可以降低晶格堆积密度并且降低键强，从而可以降低陶瓷材料的烧结温度。因此，所述陶瓷材料不需要添加烧结助剂，能够在较低温度850℃～900℃下完成烧结致密化，可以极大程度降低体系中的烧结助剂对陶瓷材料介电性能的影响，使其具有优异的性能。
LTCC microwave dielectric ceramic material and manufacturing method thereof
LTCC微波介质陶瓷材料及其制造方法
MAO XU (author) / WANG XIUHONG (author) / HUANG QINGHUAN (author) / WANG JIN (author) / AI CHENXIA (author)
2021-06-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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