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Nanocrystalline barium titanate ceramic and preparation method thereof
The invention belongs to the technical field of capacitor dielectric materials, and particularly relates to nanocrystalline barium titanate ceramic and a preparation method thereof. The preparation method of the nanocrystalline barium titanate ceramic comprises the following steps of: mixing barium carbonate and titanium dioxide, and carrying out ball milling, sanding, drying, sieving and calcining to obtain the barium titanate ceramic. The preparation method of the nanocrystalline barium titanate ceramic comprises the following steps of: mixing and ball-milling barium carbonate and titanium dioxide to increase the sintering activity of barium carbonate and titanium dioxide; carrying out solid-phase synthesis by using a sanding method to obtain barium titanate nano-powder with relatively small particle size and high tetragonality; the barium titanate nano-powder is subjected to calcination treatment, and the obtained nanocrystalline barium titanate ceramic has a small grain size and ahigh dielectric constant and can meet the requirement that a capacitor contains 5-6 ceramic grains in each single dielectric medium when being used as a ceramic capacitor material.
本发明属于电容器介质材料技术领域，具体涉及一种纳米晶钛酸钡陶瓷及其制备方法。本发明纳米晶钛酸钡陶瓷的制备方法是将碳酸钡与二氧化钛混合，经球磨、砂磨、干燥、过筛、煅烧，得到钛酸钡陶瓷。本发明纳米晶钛酸钡陶瓷的制备方法先将碳酸钡和二氧化钛混合球磨以增加其烧结活性，然后通过砂磨的方法固相合成粒径较小、高四方性的钛酸钡纳米粉体，钛酸钡纳米粉体经煅烧处理，所得纳米晶钛酸钡陶瓷具有较小的晶粒尺寸和较高的介电常数，作为陶瓷电容器材料可满足电容器件对每单电介质中含有5‑6个陶瓷晶粒的要求。
Nanocrystalline barium titanate ceramic and preparation method thereof
The invention belongs to the technical field of capacitor dielectric materials, and particularly relates to nanocrystalline barium titanate ceramic and a preparation method thereof. The preparation method of the nanocrystalline barium titanate ceramic comprises the following steps of: mixing barium carbonate and titanium dioxide, and carrying out ball milling, sanding, drying, sieving and calcining to obtain the barium titanate ceramic. The preparation method of the nanocrystalline barium titanate ceramic comprises the following steps of: mixing and ball-milling barium carbonate and titanium dioxide to increase the sintering activity of barium carbonate and titanium dioxide; carrying out solid-phase synthesis by using a sanding method to obtain barium titanate nano-powder with relatively small particle size and high tetragonality; the barium titanate nano-powder is subjected to calcination treatment, and the obtained nanocrystalline barium titanate ceramic has a small grain size and ahigh dielectric constant and can meet the requirement that a capacitor contains 5-6 ceramic grains in each single dielectric medium when being used as a ceramic capacitor material.
本发明属于电容器介质材料技术领域，具体涉及一种纳米晶钛酸钡陶瓷及其制备方法。本发明纳米晶钛酸钡陶瓷的制备方法是将碳酸钡与二氧化钛混合，经球磨、砂磨、干燥、过筛、煅烧，得到钛酸钡陶瓷。本发明纳米晶钛酸钡陶瓷的制备方法先将碳酸钡和二氧化钛混合球磨以增加其烧结活性，然后通过砂磨的方法固相合成粒径较小、高四方性的钛酸钡纳米粉体，钛酸钡纳米粉体经煅烧处理，所得纳米晶钛酸钡陶瓷具有较小的晶粒尺寸和较高的介电常数，作为陶瓷电容器材料可满足电容器件对每单电介质中含有5‑6个陶瓷晶粒的要求。
Nanocrystalline barium titanate ceramic and preparation method thereof
纳米晶钛酸钡陶瓷及其制备方法
ZHANG LEI (Autor:in) / YU HONGYU (Autor:in) / WANG HONGZHAO (Autor:in) / ZHUANG HOURONG (Autor:in) / ZENG JUN (Autor:in)
14.08.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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