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Ceramic dielectric material, ceramic capacitor and preparation method thereof
The invention discloses a ceramic dielectric material, a ceramic capacitor and a preparation method thereof, and belongs to the technical field of materials. The ceramic dielectric material comprises the following components in percentage by molar mass: 94.0-98.0% of barium titanate, 1.2-2.5% of a glass phase, 0.5-1.0% of an anti-reducing agent, 0.5-1.5% of an alkali metal compound and 0.5-3.0% of an oxide of a rare earth element, the oxides of the rare earth elements comprise Dy2O3, Y2O3 and Tm2O3, and the obtained ceramic dielectric material has stable capacitance characteristics, high dielectric constant and high temperature stability and is easier to laminate; the ceramic capacitor is formed by sintering a ceramic dielectric material serving as a raw material, the obtained ceramic capacitor meets the X5R standard, and the influence of sharp capacitance change caused by the temperature can be well stabilized within the normal temperature section; meanwhile, the preparation methods of the ceramic dielectric material and the ceramic capacitor provided by the invention are simple, simple and convenient to operate and free of toxic and harmful substances, and the prepared ceramic capacitor is high in density, small in crystal grain, few in defect and suitable for actual production and application.
本发明公开了一种陶瓷介电材料、陶瓷电容器及其制备方法，属于材料技术领域；本发明的陶瓷介电材料包括以下摩尔质量百分数的组分：钛酸钡94.0‑98.0％、玻璃相1.2‑2.5％、抗还原剂0.5‑1.0％、碱金属化合物0.5‑1.5％、稀土元素的氧化物0.5‑3.0％；所述稀土元素的氧化物包括Dy2O3、Y2O3和Tm2O3，得到的陶瓷介电材料具有稳定电容特性、高介电常数和高温度稳定性且更容易叠层；本发明的陶瓷电容器是以陶瓷介电材料为原料烧结而成，得到的陶瓷电容器符合X5R标准，且在常温段内能很好的稳定温度造成的电容值剧烈变化的影响；同时本发明提供的陶瓷介电材料和陶瓷电容器的制备方法简单、操作简便，不含有毒有害物质，制备得到的陶瓷电容器致密度高、晶粒小、缺陷少，适合实际生产应用。
Ceramic dielectric material, ceramic capacitor and preparation method thereof
The invention discloses a ceramic dielectric material, a ceramic capacitor and a preparation method thereof, and belongs to the technical field of materials. The ceramic dielectric material comprises the following components in percentage by molar mass: 94.0-98.0% of barium titanate, 1.2-2.5% of a glass phase, 0.5-1.0% of an anti-reducing agent, 0.5-1.5% of an alkali metal compound and 0.5-3.0% of an oxide of a rare earth element, the oxides of the rare earth elements comprise Dy2O3, Y2O3 and Tm2O3, and the obtained ceramic dielectric material has stable capacitance characteristics, high dielectric constant and high temperature stability and is easier to laminate; the ceramic capacitor is formed by sintering a ceramic dielectric material serving as a raw material, the obtained ceramic capacitor meets the X5R standard, and the influence of sharp capacitance change caused by the temperature can be well stabilized within the normal temperature section; meanwhile, the preparation methods of the ceramic dielectric material and the ceramic capacitor provided by the invention are simple, simple and convenient to operate and free of toxic and harmful substances, and the prepared ceramic capacitor is high in density, small in crystal grain, few in defect and suitable for actual production and application.
本发明公开了一种陶瓷介电材料、陶瓷电容器及其制备方法，属于材料技术领域；本发明的陶瓷介电材料包括以下摩尔质量百分数的组分：钛酸钡94.0‑98.0％、玻璃相1.2‑2.5％、抗还原剂0.5‑1.0％、碱金属化合物0.5‑1.5％、稀土元素的氧化物0.5‑3.0％；所述稀土元素的氧化物包括Dy2O3、Y2O3和Tm2O3，得到的陶瓷介电材料具有稳定电容特性、高介电常数和高温度稳定性且更容易叠层；本发明的陶瓷电容器是以陶瓷介电材料为原料烧结而成，得到的陶瓷电容器符合X5R标准，且在常温段内能很好的稳定温度造成的电容值剧烈变化的影响；同时本发明提供的陶瓷介电材料和陶瓷电容器的制备方法简单、操作简便，不含有毒有害物质，制备得到的陶瓷电容器致密度高、晶粒小、缺陷少，适合实际生产应用。
Ceramic dielectric material, ceramic capacitor and preparation method thereof
一种陶瓷介电材料、陶瓷电容器及其制备方法
FU ZHENXIAO (Autor:in) / ZHANG LEI (Autor:in) / CAO XIUHUA (Autor:in) / HUANG XIONG (Autor:in) / WANG PENGFEI (Autor:in) / YU SHUHUI (Autor:in) / LIU WEIFENG (Autor:in) / SUN RONG (Autor:in)
03.06.2022
Patent
Elektronische Ressource
Chinesisch
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