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Barium titanate-based X9R type high-dielectric MLCC dielectric material and preparation method thereof
The invention discloses a barium titanate-based X9R type high-dielectric MLCC dielectric material and a preparation method thereof, the main component of the material is (1-x) BaTi1-yCeyO3-x (Bi0. 5Na0. 5) TiO3 solid solution, x is more than 0 and less than or equal to 0.20, y is more than or equal to 0.002 and less than or equal to 0.04, and the molar percentage is 95-97%; the additive is composed of Nb2O5 and MgO, and the mole percentage of the additive is 3%-5%. The preparation method comprises the following steps: respectively synthesizing BaTi (1-x) CexO3 and (Bi0. 5Na0. 5) TiO3 by a solid phase method, proportioning according to a ratio, ball-milling, drying, sieving and pre-sintering, adding Nb2O5 and MgO additives according to a ratio during secondary ball-milling, drying and sieving to obtain raw material powder, granulating the raw material powder, pressing into a green body, and sintering to obtain the MLCC dielectric material. The MLCC dielectric material provided by the invention does not contain harmful elements, the dielectric temperature characteristic meets the EIA X9R standard requirement, the room temperature dielectric constant is 1800-2200, the dielectric loss is low, and the resistivity is high; the used preparation method is simple in process flow and low in preparation cost, and has a good industrialization prospect.
本发明公开了一种钛酸钡基X9R型高介MLCC介质材料及其制备方法，该材料的主要成分为(1‑x)BaTi1‑yCeyO3‑x(Bi0.5Na0.5)TiO3固溶体，其中0＜x≤0.20，0.002≤y≤0.04，其摩尔百分比为95％～97％；以及由Nb2O5和MgO构成的添加剂，其摩尔百分比为3％～5％。制备方法包括：通过固相法分别合成BaTi1‑xCexO3与(Bi0.5Na0.5)TiO3，按比例配料，球磨，烘干过筛后预烧，二次球磨时按比例加入Nb2O5、MgO添加剂，烘干后过筛得到原料粉体，将原料粉体造粒后压制成生坯，然后烧结得到MLCC介质材料。本发明提供的MLCC介质材料，不含有害元素，介温特性满足EIA X9R标准要求，室温介电常数1800～2200，介电损耗低，电阻率高；所使用的制备方法工艺流程简单，制备成本低，具有良好的产业化前景。
Barium titanate-based X9R type high-dielectric MLCC dielectric material and preparation method thereof
The invention discloses a barium titanate-based X9R type high-dielectric MLCC dielectric material and a preparation method thereof, the main component of the material is (1-x) BaTi1-yCeyO3-x (Bi0. 5Na0. 5) TiO3 solid solution, x is more than 0 and less than or equal to 0.20, y is more than or equal to 0.002 and less than or equal to 0.04, and the molar percentage is 95-97%; the additive is composed of Nb2O5 and MgO, and the mole percentage of the additive is 3%-5%. The preparation method comprises the following steps: respectively synthesizing BaTi (1-x) CexO3 and (Bi0. 5Na0. 5) TiO3 by a solid phase method, proportioning according to a ratio, ball-milling, drying, sieving and pre-sintering, adding Nb2O5 and MgO additives according to a ratio during secondary ball-milling, drying and sieving to obtain raw material powder, granulating the raw material powder, pressing into a green body, and sintering to obtain the MLCC dielectric material. The MLCC dielectric material provided by the invention does not contain harmful elements, the dielectric temperature characteristic meets the EIA X9R standard requirement, the room temperature dielectric constant is 1800-2200, the dielectric loss is low, and the resistivity is high; the used preparation method is simple in process flow and low in preparation cost, and has a good industrialization prospect.
本发明公开了一种钛酸钡基X9R型高介MLCC介质材料及其制备方法，该材料的主要成分为(1‑x)BaTi1‑yCeyO3‑x(Bi0.5Na0.5)TiO3固溶体，其中0＜x≤0.20，0.002≤y≤0.04，其摩尔百分比为95％～97％；以及由Nb2O5和MgO构成的添加剂，其摩尔百分比为3％～5％。制备方法包括：通过固相法分别合成BaTi1‑xCexO3与(Bi0.5Na0.5)TiO3，按比例配料，球磨，烘干过筛后预烧，二次球磨时按比例加入Nb2O5、MgO添加剂，烘干后过筛得到原料粉体，将原料粉体造粒后压制成生坯，然后烧结得到MLCC介质材料。本发明提供的MLCC介质材料，不含有害元素，介温特性满足EIA X9R标准要求，室温介电常数1800～2200，介电损耗低，电阻率高；所使用的制备方法工艺流程简单，制备成本低，具有良好的产业化前景。
Barium titanate-based X9R type high-dielectric MLCC dielectric material and preparation method thereof
一种钛酸钡基X9R型高介MLCC介质材料及其制备方法
WANG FENGLIN (author) / ZHANG WEIJUN (author) / MAO HAIJUN (author) / CHEN XINGYU (author) / LIU ZHUOFENG (author) / LI WEI (author)
2024-05-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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