Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dielectric ceramic and multilayer ceramic capacitor
The invention discloses a dielectric ceramic and a multilayer ceramic capacitor. Secondary phase particles containing Al, Mg and Si exist in the dielectric ceramic, the secondary phase particles are made to form a long-rod-shaped structure, the long-rod-shaped secondary phase particles have a certain anchoring effect on a dielectric layer and an internal electrode, the binding force of an interface is improved, and therefore the thermal shock resistance is improved. Moreover, by optimizing the composition of the dielectric ceramic, the size of Mg-Al-Si secondary phase particles is controlled,so that the thermal shock resistance of the product can be improved by the long-rod-shaped secondary phase particles, and meanwhile, the problem of service life deterioration caused by overlarge secondary phase can be avoided; therefore, the dielectric layer of a multilayer ceramic capacitor is further thinned and multilayered, and the market requirements of small size and large capacity are met.
本发明公开了一种电介质陶瓷、多层陶瓷电容器。本发明的电介质陶瓷中存在含有Al、Mg、Si的二次相粒子，通过使二次相粒子形成长棒状结构，长棒状二次相粒子对介质层和内部电极起到了一定的锚定作用，改善了界面的结合力，从而提高耐热冲击性。并且，本发明通过优化电介质陶瓷的组成，控制了Mg‑Al‑Si二次相粒子的尺寸，从而确保了长棒状二次相粒子既可以提高产品的耐热冲击性能，同时又可避免出现二次相过大导致的寿命恶化问题，从而实现多层陶瓷电容器的介质层的进一步薄层化、多层化，满足小尺寸、大容量的市场需求。
Dielectric ceramic and multilayer ceramic capacitor
The invention discloses a dielectric ceramic and a multilayer ceramic capacitor. Secondary phase particles containing Al, Mg and Si exist in the dielectric ceramic, the secondary phase particles are made to form a long-rod-shaped structure, the long-rod-shaped secondary phase particles have a certain anchoring effect on a dielectric layer and an internal electrode, the binding force of an interface is improved, and therefore the thermal shock resistance is improved. Moreover, by optimizing the composition of the dielectric ceramic, the size of Mg-Al-Si secondary phase particles is controlled,so that the thermal shock resistance of the product can be improved by the long-rod-shaped secondary phase particles, and meanwhile, the problem of service life deterioration caused by overlarge secondary phase can be avoided; therefore, the dielectric layer of a multilayer ceramic capacitor is further thinned and multilayered, and the market requirements of small size and large capacity are met.
本发明公开了一种电介质陶瓷、多层陶瓷电容器。本发明的电介质陶瓷中存在含有Al、Mg、Si的二次相粒子，通过使二次相粒子形成长棒状结构，长棒状二次相粒子对介质层和内部电极起到了一定的锚定作用，改善了界面的结合力，从而提高耐热冲击性。并且，本发明通过优化电介质陶瓷的组成，控制了Mg‑Al‑Si二次相粒子的尺寸，从而确保了长棒状二次相粒子既可以提高产品的耐热冲击性能，同时又可避免出现二次相过大导致的寿命恶化问题，从而实现多层陶瓷电容器的介质层的进一步薄层化、多层化，满足小尺寸、大容量的市场需求。
Dielectric ceramic and multilayer ceramic capacitor
一种电介质陶瓷、多层陶瓷电容器
MA YANHONG (Autor:in) / QIU JIHUA (Autor:in) / SUN JIAN (Autor:in)
02.04.2021
Patent
Elektronische Ressource
Chinesisch
Dielectric material for multilayer ceramic capacitor, and multilayer ceramic capacitor
| Europäisches Patentamt | 2018