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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lead-free ferroelectric material and preparation method and application thereof
The invention provides a lead-free ferroelectric material as well as a preparation method and application thereof. The lead-free ferroelectric material is a zinc ion and niobium ion composite doped and modified sodium bismuth titanate-potassium bismuth titanate binary solid solution ceramic material, the chemical expression of the lead-free ferroelectric material is Bi < 0.5 > (Na < 0.81 > K < 0.19 >) < 0.5 > Ti < 1-x > (Zn < 1/3 > Nb < 2/3 >) < x > O < 3 >, wherein x is the mole number, and x is equal to 0.025 to 0.04; the method comprises the following steps: taking a sodium bismuth titanate-potassium bismuth titanate binary solid solution at a quasi-isotropic phase boundary as a matrix, and doping zinc ions and niobium ions to adjust the phase change from a non-ergodic phase to an ergodic phase to a room temperature condition, so that the strain performance obtained under the room temperature condition is remarkably improved; meanwhile, the zinc-niobium composite ions can stabilize the polarization intensity in a relatively wide temperature interval, so that the temperature stability of the strain performance is ensured; and an ideal deformation result can be obtained in a relatively small electric field environment.
本发明提供了一种无铅铁电材料及其制备方法和应用，所述无铅铁电材料为锌离子和铌离子复合掺杂改性的钛酸铋钠‑钛酸铋钾二元固溶体陶瓷材料；所述无铅铁电材料的化学表达式为：Bi0.5(Na0.81K0.19)0.5Ti1‑x(Zn1/3Nb2/3)xO3；其中，x为摩尔数，x＝0.025～0.04；将准同性相界处的钛酸铋钠‑钛酸铋钾二元固溶体作为基体，通过掺杂锌离子和铌离子，以将非遍历性相到遍历性相的相变调整至室温条件，实现在室温条件下获得的应变性能显著提高；同时，锌铌复合离子可以使极化强度稳定在较宽的温度区间内，从而确保了应变性能的温度稳定性；在面对较小的电场环境时，能够获取理想的形变结果。
Lead-free ferroelectric material and preparation method and application thereof
The invention provides a lead-free ferroelectric material as well as a preparation method and application thereof. The lead-free ferroelectric material is a zinc ion and niobium ion composite doped and modified sodium bismuth titanate-potassium bismuth titanate binary solid solution ceramic material, the chemical expression of the lead-free ferroelectric material is Bi < 0.5 > (Na < 0.81 > K < 0.19 >) < 0.5 > Ti < 1-x > (Zn < 1/3 > Nb < 2/3 >) < x > O < 3 >, wherein x is the mole number, and x is equal to 0.025 to 0.04; the method comprises the following steps: taking a sodium bismuth titanate-potassium bismuth titanate binary solid solution at a quasi-isotropic phase boundary as a matrix, and doping zinc ions and niobium ions to adjust the phase change from a non-ergodic phase to an ergodic phase to a room temperature condition, so that the strain performance obtained under the room temperature condition is remarkably improved; meanwhile, the zinc-niobium composite ions can stabilize the polarization intensity in a relatively wide temperature interval, so that the temperature stability of the strain performance is ensured; and an ideal deformation result can be obtained in a relatively small electric field environment.
本发明提供了一种无铅铁电材料及其制备方法和应用，所述无铅铁电材料为锌离子和铌离子复合掺杂改性的钛酸铋钠‑钛酸铋钾二元固溶体陶瓷材料；所述无铅铁电材料的化学表达式为：Bi0.5(Na0.81K0.19)0.5Ti1‑x(Zn1/3Nb2/3)xO3；其中，x为摩尔数，x＝0.025～0.04；将准同性相界处的钛酸铋钠‑钛酸铋钾二元固溶体作为基体，通过掺杂锌离子和铌离子，以将非遍历性相到遍历性相的相变调整至室温条件，实现在室温条件下获得的应变性能显著提高；同时，锌铌复合离子可以使极化强度稳定在较宽的温度区间内，从而确保了应变性能的温度稳定性；在面对较小的电场环境时，能够获取理想的形变结果。
Lead-free ferroelectric material and preparation method and application thereof
一种无铅铁电材料及其制备方法和应用
JIN LI (Autor:in) / JING RUIYI (Autor:in) / WEI XIAOYONG (Autor:in)
24.02.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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