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Invention Grant
CN106467395B BNT-BST-KNN反铁电储能陶瓷及其制备方法 有权 转让

BNT-BST-KNN反铁电储能陶瓷及其制备方法
Abstract:
本发明公开了一种BNT‑BST‑KNN反铁电储能陶瓷及其制备方法，属于功能陶瓷技术领域，分子式为：(1‑x)Bi1/2Na1/2TiO3‑xBa1/2Sr1/2TiO3‑0.05KNaNbO3，其中x＝0.01、0.03、0.05或0.07。本发明解决了现有技术中La3+掺杂电陶瓷减小电场回滞的同时增大了材料的相变电场，B位掺杂Zr2+元素的电陶瓷的反铁电相不稳定的问题，加入Sr元素有助于扩大四方反铁电相的稳定区域，通过掺杂BaSrTiO3、KNaNbO3来改变本发明BNT‑BST‑KNN反铁电储能陶瓷的电学性能。
Abstract(English):

The invention discloses a BNT-BST-KNN anti-ferroelectric energy-storage ceramic and a preparation method thereof, which belong to the technical field of functional ceramic. A molecular formula is (1-x)Bi1/2Na1/2TiO3 xBa1/2Sr1/2TiO3-0.05KNaNbO3, wherein x is 0.01, 0.03, 0.05 or 0.07. The BNT-BST-KNN anti-ferroelectric energy-storage ceramic solves the problems that La<3+>-doped electroceramic reduces the electric field hysteresis and increases the phase-transition electric field of a material, and the anti-ferroelectric phase of B site Zr<2+> element-doped electroceramic is unstable; the added Sr element is helpful for enlarging a stable area of the tetragonal anti-ferroelectric phase, and the electricity performance of the BNT-BST-KNN anti-ferroelectric energy-storage ceramic can be changed by doping BaSrTiO3 and KNaNbO3.

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