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Preparation method of bismuth ferrite-barium titanate composite piezoelectric ceramic
The invention relates to the field of piezoelectric ceramics, in particular to a preparation method of bismuth ferrite-barium titanate composite piezoelectric ceramics. The bismuth ferrite-barium titanate composite piezoelectric ceramic is prepared by combining mechanical alloying with a solid-phase reaction method, and the method comprises the following steps: mechanical alloying treatment, burdening, primary ball milling, tabletting and presintering, secondary ball milling, granulation, tabletting and forming, glue discharging, sintering, electrode firing, polarization and testing. Crystal structures of iron oxide, bismuth oxide and manganese oxide are destroyed through mechanical alloying in advance, so that atomic-level mixing of elements is realized, and a Bi-O-Fe (Mn) amorphous compound is formed, so that massive volatilization of bismuth oxide in the sintering process is inhibited. More defect energy can be generated by mechanical alloying, so that the effects of reducing the sintering temperature of the solid-phase reaction and shortening the reaction time can be achieved.
本发明涉及压电陶瓷领域，具体为一种铁酸铋‑钛酸钡复合压电陶瓷的制备方法。采用机械合金化结合固相反应法制备铁酸铋‑钛酸钡复合压电陶瓷，其流程如下：机械合金化处理→配料→一次球磨→压片预烧→二次球磨→造粒→压片成型→排胶→烧结→烧制电极→极化→测试。本发明通过预先机械合金化破坏了氧化铁、氧化铋和氧化锰的晶体结构，使得元素实现原子级别的混合，形成Bi‑O‑Fe(Mn)非晶化合物抑制了烧结过程中氧化铋的大量挥发。而且机械合金化会产生更多缺陷能，可以实现降低固相反应烧结温度，缩短反应时间的效果。
Preparation method of bismuth ferrite-barium titanate composite piezoelectric ceramic
The invention relates to the field of piezoelectric ceramics, in particular to a preparation method of bismuth ferrite-barium titanate composite piezoelectric ceramics. The bismuth ferrite-barium titanate composite piezoelectric ceramic is prepared by combining mechanical alloying with a solid-phase reaction method, and the method comprises the following steps: mechanical alloying treatment, burdening, primary ball milling, tabletting and presintering, secondary ball milling, granulation, tabletting and forming, glue discharging, sintering, electrode firing, polarization and testing. Crystal structures of iron oxide, bismuth oxide and manganese oxide are destroyed through mechanical alloying in advance, so that atomic-level mixing of elements is realized, and a Bi-O-Fe (Mn) amorphous compound is formed, so that massive volatilization of bismuth oxide in the sintering process is inhibited. More defect energy can be generated by mechanical alloying, so that the effects of reducing the sintering temperature of the solid-phase reaction and shortening the reaction time can be achieved.
本发明涉及压电陶瓷领域，具体为一种铁酸铋‑钛酸钡复合压电陶瓷的制备方法。采用机械合金化结合固相反应法制备铁酸铋‑钛酸钡复合压电陶瓷，其流程如下：机械合金化处理→配料→一次球磨→压片预烧→二次球磨→造粒→压片成型→排胶→烧结→烧制电极→极化→测试。本发明通过预先机械合金化破坏了氧化铁、氧化铋和氧化锰的晶体结构，使得元素实现原子级别的混合，形成Bi‑O‑Fe(Mn)非晶化合物抑制了烧结过程中氧化铋的大量挥发。而且机械合金化会产生更多缺陷能，可以实现降低固相反应烧结温度，缩短反应时间的效果。
Preparation method of bismuth ferrite-barium titanate composite piezoelectric ceramic
一种铁酸铋-钛酸钡复合压电陶瓷的制备方法
HUANG QIAN (Autor:in) / WANG HAIWANG (Autor:in) / CHEN SHUAIFU (Autor:in) / HOU ANRAN (Autor:in) / FU WEIJIE (Autor:in) / PENG TAO (Autor:in) / WANG GUANQI (Autor:in) / LI YUANMING (Autor:in) / DENG NING (Autor:in) / SUN YULONG (Autor:in)
03.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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