Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Strontium zirconate titanate solid solution modified sodium bismuth titanate-based ceramic material and preparation method thereof
The invention relates to a preparation method of a strontium zirconate titanate solid solution modified sodium bismuth titanate-based ceramic material, and the chemical composition of the strontium zirconate titanate solid solution modified sodium bismuth titanate-based ceramic material is (1-x)(Bi<0.5>Na<0.5>)TiO<3>-xSr(Ti<0.5>Zr<0.5>)O<3> (wherein x is greater than or equal to 0 and less than or equal to 0.25). The preparation method comprises the steps of ingredient ball milling, pre-sintering, secondary ball milling, cold isostatic pressing method sheet preparation and sintering. In the cold isostatic pressing method sheet preparation step, prepared raw material powder is pressed into small sheets, and the strontium zirconate titanate solid solution modified ferroelectric energy storage ceramic is prepared. According to the method disclosed by the invention, the residual polarization intensity of the sodium bismuth titanate-based ceramic can be effectively reduced on the premise of maintaining relatively high maximum polarization intensity, so that a ferroelectric hysteresis loop becomes thin, and the sodium bismuth titanate-based ferroelectric ceramic material with high energy storage density is further prepared. The prepared energy storage ceramic can obtain the recoverable energy storage density of 1.85 J/cm<3> under relatively high breakdown field strength (150kV/cm). Particularly, a sample shows excellent frequency stability and temperature stability (the change of Wrec is less than +/-6%) in a wider frequency range (1-500Hz) and a temperature range (40-160 DEG C) under the condition of an electric field of 100kV/cm.
本发明涉及一种锆钛酸锶固溶改性钛酸铋钠基陶瓷材料的制备方法，其化学组成为：(1‑x)(Bi0.5Na0.5)TiO3‑xSr(Ti0.5Zr0.5)O3,(其中0≦x≦0.25)。本发明的步骤包括：配料球磨、预烧、二次球磨、冷等静压法制片和烧结步骤，在冷等静压法制片步骤中将制得的原料粉压制成小薄片，制备出锆钛酸锶固溶改性的铁电储能陶瓷。本发明方法可以在维持较大最大极化强度的前提下，有效降低钛酸铋钠基陶瓷的剩余极化强度，使电滞回线变得“瘦细”，进而制得具有高储能密度的钛酸铋钠基铁电陶瓷材料。制得的储能陶瓷能够在较高的击穿场强(150kV/cm)下获得1.85J/cm3的可回收储能密度。特别地，在100kV/cm的电场条件下，在较宽的频率范围(1‑500Hz)和温度范围(40‑160℃)内，样品表现出优异的频率稳定性和温度稳定性(Wrec的变化小于±6％)。
Strontium zirconate titanate solid solution modified sodium bismuth titanate-based ceramic material and preparation method thereof
The invention relates to a preparation method of a strontium zirconate titanate solid solution modified sodium bismuth titanate-based ceramic material, and the chemical composition of the strontium zirconate titanate solid solution modified sodium bismuth titanate-based ceramic material is (1-x)(Bi<0.5>Na<0.5>)TiO<3>-xSr(Ti<0.5>Zr<0.5>)O<3> (wherein x is greater than or equal to 0 and less than or equal to 0.25). The preparation method comprises the steps of ingredient ball milling, pre-sintering, secondary ball milling, cold isostatic pressing method sheet preparation and sintering. In the cold isostatic pressing method sheet preparation step, prepared raw material powder is pressed into small sheets, and the strontium zirconate titanate solid solution modified ferroelectric energy storage ceramic is prepared. According to the method disclosed by the invention, the residual polarization intensity of the sodium bismuth titanate-based ceramic can be effectively reduced on the premise of maintaining relatively high maximum polarization intensity, so that a ferroelectric hysteresis loop becomes thin, and the sodium bismuth titanate-based ferroelectric ceramic material with high energy storage density is further prepared. The prepared energy storage ceramic can obtain the recoverable energy storage density of 1.85 J/cm<3> under relatively high breakdown field strength (150kV/cm). Particularly, a sample shows excellent frequency stability and temperature stability (the change of Wrec is less than +/-6%) in a wider frequency range (1-500Hz) and a temperature range (40-160 DEG C) under the condition of an electric field of 100kV/cm.
本发明涉及一种锆钛酸锶固溶改性钛酸铋钠基陶瓷材料的制备方法，其化学组成为：(1‑x)(Bi0.5Na0.5)TiO3‑xSr(Ti0.5Zr0.5)O3,(其中0≦x≦0.25)。本发明的步骤包括：配料球磨、预烧、二次球磨、冷等静压法制片和烧结步骤，在冷等静压法制片步骤中将制得的原料粉压制成小薄片，制备出锆钛酸锶固溶改性的铁电储能陶瓷。本发明方法可以在维持较大最大极化强度的前提下，有效降低钛酸铋钠基陶瓷的剩余极化强度，使电滞回线变得“瘦细”，进而制得具有高储能密度的钛酸铋钠基铁电陶瓷材料。制得的储能陶瓷能够在较高的击穿场强(150kV/cm)下获得1.85J/cm3的可回收储能密度。特别地，在100kV/cm的电场条件下，在较宽的频率范围(1‑500Hz)和温度范围(40‑160℃)内，样品表现出优异的频率稳定性和温度稳定性(Wrec的变化小于±6％)。
Strontium zirconate titanate solid solution modified sodium bismuth titanate-based ceramic material and preparation method thereof
一种锆钛酸锶固溶改性钛酸铋钠基陶瓷材料及其制备方法
WANG ZHIHENG (Autor:in) / DAI ZHONGHUA (Autor:in) / ZHANG FANBO (Autor:in) / DI ZIYI (Autor:in) / LIU WEIGUO (Autor:in)
30.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023
Barium strontium zirconate titanate-based dielectric ceramic material and preparation method thereof
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2022