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Sodium bismuth titanate-based ceramic material with high energy storage density under low electric field and preparation method of sodium bismuth titanate-based ceramic material
The invention discloses a sodium bismuth titanate-based ceramic material with high energy storage density under a low electric field, the chemical composition general formula of the sodium bismuth titanate-based ceramic material is (1-x) (Bi < 0.5 > Na < 0.5 > Ti < 03 >-BaTiO < 3 >)-xCa < 0.5 > TaO < 3 >, and x is 0.01-0.15; the preparation method of the sodium bismuth titanate-based ceramic material with the high energy storage density under the low electric field comprises the following steps: burdening according to a stoichiometric ratio of a chemical composition general formula, and sequentially carrying out primary ball milling, primary drying, pre-sintering, secondary ball milling, secondary drying, sieving, tabletting, cold isostatic pressing and sintering to obtain the sodium bismuth titanate-based ceramic material with the high energy storage density under the low electric field. The sodium bismuth titanate-based ceramic material with high energy storage density under the low electric field is obtained. According to the sodium bismuth titanate-based ceramic material and the preparation method thereof, a third component is introduced into a matrix, so that the sodium bismuth titanate-based ceramic material is small in grain size, low in remanent polarization and extremely high in energy storage density under a low electric field; the cold isostatic pressing technology is adopted, the cost is saved, the blank is high in density and uniform, and the internal stress of the blank is small; and the method is environment-friendly.
本发明公开的低电场下高储能密度的钛酸铋钠基陶瓷材料，化学组成通式为(1‑x)(Bi0.5Na0.5Ti03‑BaTiO3)‑xCa0.5TaO3，其中x为0.01～0.15；本发明的低电场下高储能密度的钛酸铋钠基陶瓷材料的制备方法，步骤如下：按照化学组成通式的化学计量比进行配料，依次进行一次球磨、一次干燥、预烧、二次球磨、二次干燥、过筛、压片、冷等静压和烧结，得到低电场下高储能密度的钛酸铋钠基陶瓷材料。本发明的钛酸铋钠基陶瓷材料及其制备方法，在基体中引入第三组元，晶粒尺寸小，剩余极化强度低，低电场下具有极高的储能密度；采用冷等静压技术，节省成本，坯体密度高且均匀，坯体内应力小；对环境友好。
Sodium bismuth titanate-based ceramic material with high energy storage density under low electric field and preparation method of sodium bismuth titanate-based ceramic material
The invention discloses a sodium bismuth titanate-based ceramic material with high energy storage density under a low electric field, the chemical composition general formula of the sodium bismuth titanate-based ceramic material is (1-x) (Bi < 0.5 > Na < 0.5 > Ti < 03 >-BaTiO < 3 >)-xCa < 0.5 > TaO < 3 >, and x is 0.01-0.15; the preparation method of the sodium bismuth titanate-based ceramic material with the high energy storage density under the low electric field comprises the following steps: burdening according to a stoichiometric ratio of a chemical composition general formula, and sequentially carrying out primary ball milling, primary drying, pre-sintering, secondary ball milling, secondary drying, sieving, tabletting, cold isostatic pressing and sintering to obtain the sodium bismuth titanate-based ceramic material with the high energy storage density under the low electric field. The sodium bismuth titanate-based ceramic material with high energy storage density under the low electric field is obtained. According to the sodium bismuth titanate-based ceramic material and the preparation method thereof, a third component is introduced into a matrix, so that the sodium bismuth titanate-based ceramic material is small in grain size, low in remanent polarization and extremely high in energy storage density under a low electric field; the cold isostatic pressing technology is adopted, the cost is saved, the blank is high in density and uniform, and the internal stress of the blank is small; and the method is environment-friendly.
本发明公开的低电场下高储能密度的钛酸铋钠基陶瓷材料，化学组成通式为(1‑x)(Bi0.5Na0.5Ti03‑BaTiO3)‑xCa0.5TaO3，其中x为0.01～0.15；本发明的低电场下高储能密度的钛酸铋钠基陶瓷材料的制备方法，步骤如下：按照化学组成通式的化学计量比进行配料，依次进行一次球磨、一次干燥、预烧、二次球磨、二次干燥、过筛、压片、冷等静压和烧结，得到低电场下高储能密度的钛酸铋钠基陶瓷材料。本发明的钛酸铋钠基陶瓷材料及其制备方法，在基体中引入第三组元，晶粒尺寸小，剩余极化强度低，低电场下具有极高的储能密度；采用冷等静压技术，节省成本，坯体密度高且均匀，坯体内应力小；对环境友好。
Sodium bismuth titanate-based ceramic material with high energy storage density under low electric field and preparation method of sodium bismuth titanate-based ceramic material
低电场下高储能密度的钛酸铋钠基陶瓷材料及其制备方法
WANG JUANJUAN (author) / MA PENGKANG (author) / DUAN XUELIANG (author) / LAI FUSHENG (author) / CHEN MINGYANG (author)
2023-12-26
Patent
Electronic Resource
Chinese
| European Patent Office | 2021
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