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Calcium-doped barium titanate powder as well as preparation method and application thereof
The invention belongs to the technical field of preparation of nano ceramic powder, discloses calcium-doped barium titanate powder as well as a preparation method and application thereof, and aims to solve the technical problems that a mineralizer is needed in the preparation process of the calcium-doped barium titanate powder, and the prepared powder is large in particle size, non-uniform in element doping, poor in dispersity and low in tetragonal phase content. The method comprises the following steps: (1) preparing a barium salt solution containing a calcium source; (2) taking anatase titanium dioxide obtained by calcining a titanic acid nanotube as a titanium source, and adding the titanium source into a calcium-containing barium salt solution to obtain a calcium-doped barium titanate precursor solution; (3) carrying out hydrothermal reaction on the precursor solution; and (4) carrying out suction filtration, washing, drying and grinding to obtain the calcium-doped barium titanate powder. The calcium-doped barium titanate powder prepared by the method has the characteristics of small particle size, narrow distribution, good dispersity, high tetragonal phase content and the like; meanwhile, the reaction can avoid the use of a large number of mineralizing agents, the method is low in cost, good in safety and simple in process, large-scale production of the powder can be achieved, and the development requirements of subsequent high-temperature thin-layer multilayer ceramic capacitor products are met.
本发明属于纳米陶瓷粉体制备技术领域，公开了一种钙掺杂钛酸钡粉体及其制备方法和应用，用以解决钙掺杂钛酸钡粉体制备过程中需要矿化剂且制备的粉体颗粒尺寸大、元素掺杂不均匀、分散性差、四方相含量低技术问题。步骤如下：（1）配置含钙源的钡盐溶液；（2）以钛酸纳米管经过煅烧处理得到的锐钛矿二氧化钛为钛源，将其加入到含有钙的钡盐溶液中，得到钙掺杂钛酸钡前驱体溶液；（3）前驱体溶液水热反应；（4）进行抽滤、洗涤、干燥及研磨得到钙掺杂钛酸钡粉体。本发明制备的钙掺杂钛酸钡粉体具有颗粒尺寸小，分布窄、分散性好、四方相含量高等特点；同时该反应可以避免使用大量的矿化剂，该方法成本低、安全性好、工艺简单、亦可实现粉体的大规模生产，满足后续高温、薄层多层陶瓷电容器产品的开发要求。
Calcium-doped barium titanate powder as well as preparation method and application thereof
The invention belongs to the technical field of preparation of nano ceramic powder, discloses calcium-doped barium titanate powder as well as a preparation method and application thereof, and aims to solve the technical problems that a mineralizer is needed in the preparation process of the calcium-doped barium titanate powder, and the prepared powder is large in particle size, non-uniform in element doping, poor in dispersity and low in tetragonal phase content. The method comprises the following steps: (1) preparing a barium salt solution containing a calcium source; (2) taking anatase titanium dioxide obtained by calcining a titanic acid nanotube as a titanium source, and adding the titanium source into a calcium-containing barium salt solution to obtain a calcium-doped barium titanate precursor solution; (3) carrying out hydrothermal reaction on the precursor solution; and (4) carrying out suction filtration, washing, drying and grinding to obtain the calcium-doped barium titanate powder. The calcium-doped barium titanate powder prepared by the method has the characteristics of small particle size, narrow distribution, good dispersity, high tetragonal phase content and the like; meanwhile, the reaction can avoid the use of a large number of mineralizing agents, the method is low in cost, good in safety and simple in process, large-scale production of the powder can be achieved, and the development requirements of subsequent high-temperature thin-layer multilayer ceramic capacitor products are met.
本发明属于纳米陶瓷粉体制备技术领域，公开了一种钙掺杂钛酸钡粉体及其制备方法和应用，用以解决钙掺杂钛酸钡粉体制备过程中需要矿化剂且制备的粉体颗粒尺寸大、元素掺杂不均匀、分散性差、四方相含量低技术问题。步骤如下：（1）配置含钙源的钡盐溶液；（2）以钛酸纳米管经过煅烧处理得到的锐钛矿二氧化钛为钛源，将其加入到含有钙的钡盐溶液中，得到钙掺杂钛酸钡前驱体溶液；（3）前驱体溶液水热反应；（4）进行抽滤、洗涤、干燥及研磨得到钙掺杂钛酸钡粉体。本发明制备的钙掺杂钛酸钡粉体具有颗粒尺寸小，分布窄、分散性好、四方相含量高等特点；同时该反应可以避免使用大量的矿化剂，该方法成本低、安全性好、工艺简单、亦可实现粉体的大规模生产，满足后续高温、薄层多层陶瓷电容器产品的开发要求。
Calcium-doped barium titanate powder as well as preparation method and application thereof
一种钙掺杂钛酸钡粉体及其制备方法和应用
ZHANG JIWEI (author) / SU-MA BINGYUE (author) / CHEN JINGJING (author) / FENG JINGYA (author) / ZHANG JINGWEI (author)
2024-06-14
Patent
Electronic Resource
Chinese
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