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Sodium bismuth titanate-barium titanate leadless piezoelectric textured ceramic and preparation method thereof
The invention discloses a sodium bismuth titanate-barium titanate leadless piezoelectric textured ceramic and a preparation method thereof. The method comprises the following steps: preparing powder by adopting a solid-phase method; preparing flaky BaTiO3 powder by a molten salt method; carrying out ball milling by using BiO2, Na2CO3 and TiO2, drying and sintering to prepare Na0.5Bi0.5TiO3 presintering powder; uniformly stirring the pre-sintered powder and an organic binder on a magnetic stirrer to prepare slurry; adding the flaky BaTiO3 powder, and continuously and uniformly stirring to obtain injection slurry; carrying out injection molding on the injection slurry under the conditions of pressure and an external electric field; degreasing, drying and sintering to obtain the 0.94 Na0.5Bi0.5TiO30.06 BaTiO piezoelectric ceramic. According to the prepared 0.94 Na0.5Bi0.5TiO3-0.06 BaTiO3 piezoelectric ceramic, the problems that in a traditional ceramic green body preparation forming process, the density of a diaphragm is low, and a green body is prone to deformation and cracking in the glue discharging process, so that the product quality is affected are solved; meanwhile, the orientation effect of the ceramic is improved, and the obtained ceramic diaphragm has the characteristics of uniform structure, smooth surface, excellent piezoelectric property and the like; and the piezoelectric ceramic prepared by injection molding is high in efficiency, short in period and easy for batch production.
本发明公开了一种钛酸铋钠‑钛酸钡无铅压电织构陶瓷及其制备方法，采用固相法制备预烧粉体，熔盐法制备片状BaTiO粉体，用BiO、NaCO和TiO进行球磨、干燥和烧结制备NaBiTiO预烧粉体，将预烧粉体和有机粘结剂在磁力搅拌器上均匀搅拌制成浆料，再将片状BaTiO粉体加入继续搅拌均匀得到注射浆料，注射浆料在压力和外加电场条件下进行注射成型，脱脂、干燥和烧结得到0.94NaBiTiO‑0.06BaTiO压电陶瓷，所制备的0.94NaBiTiO‑0.06BaTiO压电陶瓷，改善了传统制备陶瓷生坯成型工艺膜片致密度低、排胶过程中坯体易变形开裂而影响产品质量等问题；同时提高了陶瓷的定向作用，所获得的陶瓷膜片具有结构均匀、表面光滑、压电性能优异等特点；并且注射成型制备压电陶瓷效率高、周期短，易于批量生产。
Sodium bismuth titanate-barium titanate leadless piezoelectric textured ceramic and preparation method thereof
The invention discloses a sodium bismuth titanate-barium titanate leadless piezoelectric textured ceramic and a preparation method thereof. The method comprises the following steps: preparing powder by adopting a solid-phase method; preparing flaky BaTiO3 powder by a molten salt method; carrying out ball milling by using BiO2, Na2CO3 and TiO2, drying and sintering to prepare Na0.5Bi0.5TiO3 presintering powder; uniformly stirring the pre-sintered powder and an organic binder on a magnetic stirrer to prepare slurry; adding the flaky BaTiO3 powder, and continuously and uniformly stirring to obtain injection slurry; carrying out injection molding on the injection slurry under the conditions of pressure and an external electric field; degreasing, drying and sintering to obtain the 0.94 Na0.5Bi0.5TiO30.06 BaTiO piezoelectric ceramic. According to the prepared 0.94 Na0.5Bi0.5TiO3-0.06 BaTiO3 piezoelectric ceramic, the problems that in a traditional ceramic green body preparation forming process, the density of a diaphragm is low, and a green body is prone to deformation and cracking in the glue discharging process, so that the product quality is affected are solved; meanwhile, the orientation effect of the ceramic is improved, and the obtained ceramic diaphragm has the characteristics of uniform structure, smooth surface, excellent piezoelectric property and the like; and the piezoelectric ceramic prepared by injection molding is high in efficiency, short in period and easy for batch production.
本发明公开了一种钛酸铋钠‑钛酸钡无铅压电织构陶瓷及其制备方法，采用固相法制备预烧粉体，熔盐法制备片状BaTiO粉体，用BiO、NaCO和TiO进行球磨、干燥和烧结制备NaBiTiO预烧粉体，将预烧粉体和有机粘结剂在磁力搅拌器上均匀搅拌制成浆料，再将片状BaTiO粉体加入继续搅拌均匀得到注射浆料，注射浆料在压力和外加电场条件下进行注射成型，脱脂、干燥和烧结得到0.94NaBiTiO‑0.06BaTiO压电陶瓷，所制备的0.94NaBiTiO‑0.06BaTiO压电陶瓷，改善了传统制备陶瓷生坯成型工艺膜片致密度低、排胶过程中坯体易变形开裂而影响产品质量等问题；同时提高了陶瓷的定向作用，所获得的陶瓷膜片具有结构均匀、表面光滑、压电性能优异等特点；并且注射成型制备压电陶瓷效率高、周期短，易于批量生产。
Sodium bismuth titanate-barium titanate leadless piezoelectric textured ceramic and preparation method thereof
一种钛酸铋钠-钛酸钡无铅压电织构陶瓷及其制备方法
ZHANG CHANGSONG (author) / ZHAO KEDI (author) / WEI LIZHU (author) / WANG CHU (author) / WANG SHIYUAN (author)
2020-06-05
Patent
Electronic Resource
Chinese
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