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Antiferroelectric ceramic and preparation method thereof
The invention discloses an anti-ferroelectric ceramic and a preparation method thereof. The raw material of the anti-ferroelectric ceramic mainly comprises a perovskite type silver niobate compound, the perovskite type silver niobate compound is formed by doping Bi, La or Ti elements in AgNbO3, and the grain size of the perovskite type silver niobate compound is 400-600 nm. As the nano-scale perovskite type silver niobate compound is selected, the sintering temperature can be effectively reduced in the sintering process, and the effects of saving energy and reducing cost are achieved. As the perovskite type silver niobate compound is doped with Bi, La or Ti elements, the breakdown strength of the anti-ferroelectric ceramic is effectively enhanced, and the energy storage density is improved. The preparation method of the anti-ferroelectric ceramic comprises the following steps: preparing a perovskite type silver niobate compound; performing granulation; preparing a ceramic body; and sintering. Wherein the perovskite type silver niobate compound is prepared by adopting a hydrothermal reaction in the preparation step of the perovskite type silver niobate compound, so that the subsequent sintering process can be carried out in an environment without atmosphere protection.
本发明公开了一种反铁电陶瓷及其制备方法。所述反铁电陶瓷，原料主要包括钙钛矿型铌酸银化合物，所述钙钛矿型铌酸银化合物为AgNbO3中掺杂有Bi、La或Ti元素，所述钙钛矿型铌酸银化合物的晶粒尺寸为400～600nm。由于选用了纳米级别的钙钛矿型铌酸银化合物，在烧结过程中能够有效降低烧结温度，实现节约能源、降低成本的效果。由于钙钛矿型铌酸银化合物掺杂有Bi、La或Ti元素，有效增强反铁电陶瓷的击穿强度，提高储能密度。该反铁电陶瓷的制备方法包括步骤：钙钛矿型铌酸银化合物的制备；造粒；陶瓷坯体制备；烧结。其中的钙钛矿型铌酸银化合物的制备步骤采用了水热反应制备钙钛矿型铌酸银化合物，使得后续的烧结过程可以在无气氛保护的环境下进行。
Antiferroelectric ceramic and preparation method thereof
The invention discloses an anti-ferroelectric ceramic and a preparation method thereof. The raw material of the anti-ferroelectric ceramic mainly comprises a perovskite type silver niobate compound, the perovskite type silver niobate compound is formed by doping Bi, La or Ti elements in AgNbO3, and the grain size of the perovskite type silver niobate compound is 400-600 nm. As the nano-scale perovskite type silver niobate compound is selected, the sintering temperature can be effectively reduced in the sintering process, and the effects of saving energy and reducing cost are achieved. As the perovskite type silver niobate compound is doped with Bi, La or Ti elements, the breakdown strength of the anti-ferroelectric ceramic is effectively enhanced, and the energy storage density is improved. The preparation method of the anti-ferroelectric ceramic comprises the following steps: preparing a perovskite type silver niobate compound; performing granulation; preparing a ceramic body; and sintering. Wherein the perovskite type silver niobate compound is prepared by adopting a hydrothermal reaction in the preparation step of the perovskite type silver niobate compound, so that the subsequent sintering process can be carried out in an environment without atmosphere protection.
本发明公开了一种反铁电陶瓷及其制备方法。所述反铁电陶瓷，原料主要包括钙钛矿型铌酸银化合物，所述钙钛矿型铌酸银化合物为AgNbO3中掺杂有Bi、La或Ti元素，所述钙钛矿型铌酸银化合物的晶粒尺寸为400～600nm。由于选用了纳米级别的钙钛矿型铌酸银化合物，在烧结过程中能够有效降低烧结温度，实现节约能源、降低成本的效果。由于钙钛矿型铌酸银化合物掺杂有Bi、La或Ti元素，有效增强反铁电陶瓷的击穿强度，提高储能密度。该反铁电陶瓷的制备方法包括步骤：钙钛矿型铌酸银化合物的制备；造粒；陶瓷坯体制备；烧结。其中的钙钛矿型铌酸银化合物的制备步骤采用了水热反应制备钙钛矿型铌酸银化合物，使得后续的烧结过程可以在无气氛保护的环境下进行。
Antiferroelectric ceramic and preparation method thereof
一种反铁电陶瓷及其制备方法
CAI WEIQIANG (Autor:in) / WANG XIUCAI (Autor:in) / XIAO ZE (Autor:in) / LI ZIHAO (Autor:in) / LI XIANGLONG (Autor:in) / TAN RONGSHUANG (Autor:in) / XU JIAMIAO (Autor:in) / LIANG YUJIAN (Autor:in) / HUANG DECHENG (Autor:in) / SU JIANDUAN (Autor:in)
25.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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