Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Temperature-stable capacitor ceramic powder with core-shell structure and preparation method and application thereof
The invention discloses temperature-stable capacitor ceramic powder with a core-shell structure and a preparation method and application thereof, and relates to the technical field of ceramic materials and manufacturing thereof, the main component is BaTiO3, and the BaTiO3 is doped with a modifier and glass powder; the modifying agent is prepared from the following components: TiO2, NaCO3 and Nb2O5; the glass powder comprises a Li-B-Si glass compound and a Bi-B glass compound. A proper amount of dopant is added during formula design, so that residual doped modified substances are attached to the surface of a crystal grain shell layer when a medium is thick, and when a medium layer is thinned, the concentration gradient of a weakened core-shell structure is compensated, and stable capacity temperature change rate and small medium loss are kept. The invention solves the problems of unstable capacity temperature change rate and increased loss of the existing medium and low temperature sintered barium titanate-based ceramic material with X7R characteristic for the Pb-Ag inner electrode MLCC in the small-size and large-capacity application of the MLCC.
本发明公开了一种具有芯‑壳结构的温度稳定型电容器瓷粉及其制备方法和应用，涉及陶瓷材料及其制造技术领域，主体成分为BaTiO3，BaTiO3中掺杂有改性剂和玻璃粉；改性剂的成分包括TiO2、NaCO3和Nb2O5；玻璃粉包括Li‑B‑Si玻璃化合物和Bi‑B玻璃化合物。在配方设计时添加适量的掺杂剂，使介质较厚时晶粒壳层表面附着残余掺杂改性物质，当介质层变薄时，使得削弱的芯‑壳结构浓度梯度得到补偿，保持了稳定的容量温度变化率和较小的介质损耗。解决了目前的Pb‑Ag内电极MLCC用中低温烧结的X7R特性的钛酸钡基陶瓷材料在MLCC小尺寸大容量应用中存在容量温度变化率不稳定、损耗增大的问题。
Temperature-stable capacitor ceramic powder with core-shell structure and preparation method and application thereof
The invention discloses temperature-stable capacitor ceramic powder with a core-shell structure and a preparation method and application thereof, and relates to the technical field of ceramic materials and manufacturing thereof, the main component is BaTiO3, and the BaTiO3 is doped with a modifier and glass powder; the modifying agent is prepared from the following components: TiO2, NaCO3 and Nb2O5; the glass powder comprises a Li-B-Si glass compound and a Bi-B glass compound. A proper amount of dopant is added during formula design, so that residual doped modified substances are attached to the surface of a crystal grain shell layer when a medium is thick, and when a medium layer is thinned, the concentration gradient of a weakened core-shell structure is compensated, and stable capacity temperature change rate and small medium loss are kept. The invention solves the problems of unstable capacity temperature change rate and increased loss of the existing medium and low temperature sintered barium titanate-based ceramic material with X7R characteristic for the Pb-Ag inner electrode MLCC in the small-size and large-capacity application of the MLCC.
本发明公开了一种具有芯‑壳结构的温度稳定型电容器瓷粉及其制备方法和应用，涉及陶瓷材料及其制造技术领域，主体成分为BaTiO3，BaTiO3中掺杂有改性剂和玻璃粉；改性剂的成分包括TiO2、NaCO3和Nb2O5；玻璃粉包括Li‑B‑Si玻璃化合物和Bi‑B玻璃化合物。在配方设计时添加适量的掺杂剂，使介质较厚时晶粒壳层表面附着残余掺杂改性物质，当介质层变薄时，使得削弱的芯‑壳结构浓度梯度得到补偿，保持了稳定的容量温度变化率和较小的介质损耗。解决了目前的Pb‑Ag内电极MLCC用中低温烧结的X7R特性的钛酸钡基陶瓷材料在MLCC小尺寸大容量应用中存在容量温度变化率不稳定、损耗增大的问题。
Temperature-stable capacitor ceramic powder with core-shell structure and preparation method and application thereof
一种具有芯-壳结构的温度稳定型电容器瓷粉及其制备方法和应用
NA WENJU (Autor:in) / LIU YANGQIONG (Autor:in) / PENG YONGHONG (Autor:in) / ZHAO YANGJUN (Autor:in) / JIANG JUNJUN (Autor:in) / WANG XIAOLING (Autor:in) / YAN JIAN (Autor:in)
08.11.2024
Patent
Elektronische Ressource
Chinesisch
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