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BaTiO3-based fine-grain ceramic with giant dielectric constant, low loss and high resistivity and preparation method of BaTiO3-based fine-grain ceramic
The invention provides a BaTiO3-based fine-grain ceramic with a giant dielectric constant, low loss and high resistivity. The BaTiO3-based fine-grain ceramic is prepared from the following raw materials in parts by mole and MAS: 100 parts of BaTiO3; 0.2 to 2 parts of Ln2O3; 0.2 to 2 parts of MnO2; 0.05 to 2 parts of MgO; the Ln2O3 is one or more of Y2O3, H2O3, Dy2O3 and Sm2O3, and the Ln2O3 is one or more of Y2O3, H2O3, Dy2O3 and Sm2O3; the content of the MAS accounts for 0.5 wt%-3 wt% of the BaTiO3. Compared with the prior art, the BaTiO3-based fine-grain ceramic with the giant dielectric constant, the low loss and the high resistivity provided by the invention adopts components with specific contents, so that relatively good overall interaction is realized, and the obtained product overcomes the problems of relatively low dielectric constant, overlarge crystal grains, low resistivity and the like of most dielectric ceramic materials; the method has great potential in application to the field of MLCC; the ceramic prepared by the invention shows excellent performance: relative dielectric constant gt; 104, the dielectric loss is 0.01-0.05, and the resistivity is gt; 109 omega.cm, the crystal grains are fine (the grain size is 1t; the material belongs to an environment-friendly electronic material, and can meet the practical application requirements of a miniaturized and light multilayer ceramic capacitor (MLCC).
本发明提供了一种巨介电常数、低损耗和高电阻率的BaTiO3基细晶陶瓷，由包括以下摩尔份数组分的原料和MAS制备而成：BaTiO3100份；Ln2O30.2份～2份；MnO20.2份～2份；MgO 0.05份～2份；所述Ln2O3为Y2O3、H2O3、Dy2O3和Sm2O3中的一种或多种；所述MAS的含量为BaTiO3的0.5wt％～3wt％。与现有技术相比，本发明提供的巨介电常数、低损耗和高电阻率的BaTiO3基细晶陶瓷采用特定含量组分，实现整体较好的相互作用，得到的产品克服了大多数介电陶瓷材料存在的介电常数较低、晶粒过大、电阻率低等问题，具有应用于MLCC领域的巨大潜力；本发明制备的陶瓷表现出了优异的性能：相对介电常数>104，介电损耗0.01～0.05，电阻率>109Ω·cm，晶粒细小(粒径<350nm)，属于环境友好型电子材料，可以满足小型化、轻量化的多层陶瓷电容器MLCC实际应用要求。
BaTiO3-based fine-grain ceramic with giant dielectric constant, low loss and high resistivity and preparation method of BaTiO3-based fine-grain ceramic
The invention provides a BaTiO3-based fine-grain ceramic with a giant dielectric constant, low loss and high resistivity. The BaTiO3-based fine-grain ceramic is prepared from the following raw materials in parts by mole and MAS: 100 parts of BaTiO3; 0.2 to 2 parts of Ln2O3; 0.2 to 2 parts of MnO2; 0.05 to 2 parts of MgO; the Ln2O3 is one or more of Y2O3, H2O3, Dy2O3 and Sm2O3, and the Ln2O3 is one or more of Y2O3, H2O3, Dy2O3 and Sm2O3; the content of the MAS accounts for 0.5 wt%-3 wt% of the BaTiO3. Compared with the prior art, the BaTiO3-based fine-grain ceramic with the giant dielectric constant, the low loss and the high resistivity provided by the invention adopts components with specific contents, so that relatively good overall interaction is realized, and the obtained product overcomes the problems of relatively low dielectric constant, overlarge crystal grains, low resistivity and the like of most dielectric ceramic materials; the method has great potential in application to the field of MLCC; the ceramic prepared by the invention shows excellent performance: relative dielectric constant gt; 104, the dielectric loss is 0.01-0.05, and the resistivity is gt; 109 omega.cm, the crystal grains are fine (the grain size is 1t; the material belongs to an environment-friendly electronic material, and can meet the practical application requirements of a miniaturized and light multilayer ceramic capacitor (MLCC).
本发明提供了一种巨介电常数、低损耗和高电阻率的BaTiO3基细晶陶瓷，由包括以下摩尔份数组分的原料和MAS制备而成：BaTiO3100份；Ln2O30.2份～2份；MnO20.2份～2份；MgO 0.05份～2份；所述Ln2O3为Y2O3、H2O3、Dy2O3和Sm2O3中的一种或多种；所述MAS的含量为BaTiO3的0.5wt％～3wt％。与现有技术相比，本发明提供的巨介电常数、低损耗和高电阻率的BaTiO3基细晶陶瓷采用特定含量组分，实现整体较好的相互作用，得到的产品克服了大多数介电陶瓷材料存在的介电常数较低、晶粒过大、电阻率低等问题，具有应用于MLCC领域的巨大潜力；本发明制备的陶瓷表现出了优异的性能：相对介电常数>104，介电损耗0.01～0.05，电阻率>109Ω·cm，晶粒细小(粒径<350nm)，属于环境友好型电子材料，可以满足小型化、轻量化的多层陶瓷电容器MLCC实际应用要求。
BaTiO3-based fine-grain ceramic with giant dielectric constant, low loss and high resistivity and preparation method of BaTiO3-based fine-grain ceramic
一种巨介电常数、低损耗和高电阻率的BaTiO3基细晶陶瓷及其制备方法
LI TIAN (Autor:in) / ZHENG XINGHUA (Autor:in) / LIU JIE (Autor:in) / DAI SHUYUN (Autor:in) / ZHANG HUAN (Autor:in) / ZHU PEISHU (Autor:in)
25.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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