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Tetragonal-phase barium titanate powder, hydrothermal synthesis process thereof and obtained product
The invention provides tetragonal-phase barium titanate powder, a hydrothermal synthesis process thereof and an obtained product, and belongs to the technical field of preparation of electronic ceramic powder. According to the tetragonal-phase barium titanate powder provided by the invention, the titanium dioxide colloid participates in the normal-pressure hydrothermal synthesis reaction of the cubic-phase barium titanate seed crystal, and the tetragonal-phase barium titanate powder is synthesized in a one-step hydrothermal manner by regulating and controlling the distribution of the solid particle sizes D10, D50 and D90 of the titanium dioxide colloid and the range of the span; and the prepared tetragonal-phase barium titanate powder is uniform in particle size and relatively good in dispersity, the specific surface area is 7.5-9.5 m < 2 >/g, the particle size is 80-110nm, and the axial ratio is kept at 1.0085 or above.
本发明提供了一种四方相钛酸钡粉体及其水热合成工艺和所得产品，属于电子陶瓷粉体制备技术领域。本发明提供的四方相钛酸钡粉体，其利用二氧化钛胶体参与立方相钛酸钡晶种的常压水热合成反应，通过调控二氧化钛胶体的固体颗粒粒径D10、D50、D90的分布以及径距的范围，实现一步水热合成四方相钛酸钡粉体，且所制备到的四方相钛酸钡粉体颗粒粒度均匀、分散性较好、比表面为7.5‑9.5m2/g，粒径为80‑110nm，轴率保持在1.0085以上。
Tetragonal-phase barium titanate powder, hydrothermal synthesis process thereof and obtained product
The invention provides tetragonal-phase barium titanate powder, a hydrothermal synthesis process thereof and an obtained product, and belongs to the technical field of preparation of electronic ceramic powder. According to the tetragonal-phase barium titanate powder provided by the invention, the titanium dioxide colloid participates in the normal-pressure hydrothermal synthesis reaction of the cubic-phase barium titanate seed crystal, and the tetragonal-phase barium titanate powder is synthesized in a one-step hydrothermal manner by regulating and controlling the distribution of the solid particle sizes D10, D50 and D90 of the titanium dioxide colloid and the range of the span; and the prepared tetragonal-phase barium titanate powder is uniform in particle size and relatively good in dispersity, the specific surface area is 7.5-9.5 m < 2 >/g, the particle size is 80-110nm, and the axial ratio is kept at 1.0085 or above.
本发明提供了一种四方相钛酸钡粉体及其水热合成工艺和所得产品，属于电子陶瓷粉体制备技术领域。本发明提供的四方相钛酸钡粉体，其利用二氧化钛胶体参与立方相钛酸钡晶种的常压水热合成反应，通过调控二氧化钛胶体的固体颗粒粒径D10、D50、D90的分布以及径距的范围，实现一步水热合成四方相钛酸钡粉体，且所制备到的四方相钛酸钡粉体颗粒粒度均匀、分散性较好、比表面为7.5‑9.5m2/g，粒径为80‑110nm，轴率保持在1.0085以上。
Tetragonal-phase barium titanate powder, hydrothermal synthesis process thereof and obtained product
一种四方相钛酸钡粉体及其水热合成工艺和所得产品
WANG XIANKE (author) / ZHU HENG (author) / MA HAIJUN (author) / LI ZHONGGUO (author) / WEI JINGWEI (author) / PENG QINGLING (author) / HU HAILIN (author)
2024-09-17
Patent
Electronic Resource
Chinese
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