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Sodium niobate-based ferroelectric ceramic prepared from calcium carbonate powder and preparation method of sodium niobate-based ferroelectric ceramic
The invention discloses a sodium niobate-based ferroelectric ceramic prepared from calcium carbonate powder and a preparation method of the sodium niobate-based ferroelectric ceramic, and relates to the technical field of ferroelectric ceramics, and the structural general formula of the sodium niobate-based ferroelectric ceramic is 0.865 NaNbO3-0.1 BaTiO3-0.035 CaSnO3; the preparation method comprises the following steps: drying the raw materials according to the composition, mixing, calcining the mixture, ball-milling, drying, carrying out compression molding to obtain a biscuit, degumming the biscuit, and sintering to obtain the ceramic. According to the invention, a certain amount of CaSnO3 is doped into 0.9 NaNbO3-0. 1BaTiO3 ferroelectric ceramic with a tetragonal structure, so that the Curie temperature of the material is reduced to obtain a pseudo-cubic phase structure, the sodium niobate-based ferroelectric ceramic 0.865 NaNbO3-0. 1BaTiO3-0.035 CaSnO3 with excellent strain performance at room temperature is successfully prepared, and the ceramic material can generate 0.25% of large strain in an electric field of 60kV/cm.
本发明公开了一种利用碳酸钙粉体制备的铌酸钠基铁电陶瓷及其制备方法，涉及铁电陶瓷技术领域，所述铌酸钠基铁电陶瓷的结构通式为0.865NaNbO3‑0.1BaTiO3‑0.035CaSnO3；其制备是按组成将各原料烘干后混合，将混合料煅烧、球磨、烘干，压制成型得到素坯，将素坯排胶后烧结获得陶瓷。本发明通过向四方结构的0.9NaNbO3‑0.1BaTiO3铁电陶瓷中掺杂一定量的CaSnO3，降低了材料的居里温度得到伪立方相结构，成功制备出了在室温条件下具有优异应变性能的铌酸钠基铁电陶瓷0.865NaNbO3‑0.1BaTiO3‑0.035CaSnO3，该陶瓷材料在60kV/cm电场下能够产生0.25％的大应变。
Sodium niobate-based ferroelectric ceramic prepared from calcium carbonate powder and preparation method of sodium niobate-based ferroelectric ceramic
The invention discloses a sodium niobate-based ferroelectric ceramic prepared from calcium carbonate powder and a preparation method of the sodium niobate-based ferroelectric ceramic, and relates to the technical field of ferroelectric ceramics, and the structural general formula of the sodium niobate-based ferroelectric ceramic is 0.865 NaNbO3-0.1 BaTiO3-0.035 CaSnO3; the preparation method comprises the following steps: drying the raw materials according to the composition, mixing, calcining the mixture, ball-milling, drying, carrying out compression molding to obtain a biscuit, degumming the biscuit, and sintering to obtain the ceramic. According to the invention, a certain amount of CaSnO3 is doped into 0.9 NaNbO3-0. 1BaTiO3 ferroelectric ceramic with a tetragonal structure, so that the Curie temperature of the material is reduced to obtain a pseudo-cubic phase structure, the sodium niobate-based ferroelectric ceramic 0.865 NaNbO3-0. 1BaTiO3-0.035 CaSnO3 with excellent strain performance at room temperature is successfully prepared, and the ceramic material can generate 0.25% of large strain in an electric field of 60kV/cm.
本发明公开了一种利用碳酸钙粉体制备的铌酸钠基铁电陶瓷及其制备方法，涉及铁电陶瓷技术领域，所述铌酸钠基铁电陶瓷的结构通式为0.865NaNbO3‑0.1BaTiO3‑0.035CaSnO3；其制备是按组成将各原料烘干后混合，将混合料煅烧、球磨、烘干，压制成型得到素坯，将素坯排胶后烧结获得陶瓷。本发明通过向四方结构的0.9NaNbO3‑0.1BaTiO3铁电陶瓷中掺杂一定量的CaSnO3，降低了材料的居里温度得到伪立方相结构，成功制备出了在室温条件下具有优异应变性能的铌酸钠基铁电陶瓷0.865NaNbO3‑0.1BaTiO3‑0.035CaSnO3，该陶瓷材料在60kV/cm电场下能够产生0.25％的大应变。
Sodium niobate-based ferroelectric ceramic prepared from calcium carbonate powder and preparation method of sodium niobate-based ferroelectric ceramic
利用碳酸钙粉体制备的铌酸钠基铁电陶瓷及其制备方法
ZHANG YI (Autor:in) / TAO JUN (Autor:in) / LI MIN (Autor:in) / ZHAO MENGYAO (Autor:in) / CHEN JIANBING (Autor:in) / YANG XIAOHONG (Autor:in)
07.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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