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Anti-reduction X8R type BaTiO3-based dielectric ceramic material and preparation method thereof
The invention belongs to the technical field of ceramic materials, and discloses an anti-reduction X8R type BaTiO3-based dielectric ceramic material and a preparation method thereof. The chemical formula of the anti-reduction X8R type BaTiO3-based dielectric ceramic material is (1-x)BaTiO3-0.5xBi2O3-0.67xMgO-0.33xZrO2, wherein x is greater than or equal to 0.05 and less than or equal to 0.2. The preparation method comprises the steps of burdening BaTiO3, Bi2O3, MgO and ZrO2, mixing, and carrying out ball milling; carrying out infrared drying and sieving on the raw materials obtained after ball milling to obtain powder with uniform particles; adding a binder into the powder, sieving, granulating, and pressing into a green body; putting the green body into a sintering furnace for glue discharging, and completing removing a binding agent in the green body; and sintering the blank without the binding agent in a nitrogen-hydrogen mixed gas atmosphere to obtain a final sample. According to the invention, a benign charge compensation mechanism is established through co-doping modification of donor ions and acceptor ions, and the high-performance barium titanate-based dielectric ceramic material with high dielectric constant and good temperature stability is prepared, so that the actual application requirements of MLCC are met.
本发明属于陶瓷材料技术领域，公开了一种抗还原X8R型BaTiO3基介质陶瓷材料及其制备方法，其化学式为(1‑x)BaTiO3‑0.5x Bi2O3‑0.67x MgO‑0.33x ZrO2，0.05≤x≤0.2；制备方法为将BaTiO3、Bi2O3、MgO、ZrO2进行配料并混合球磨；球磨后所得原料红外烘干、过筛，得到颗粒均匀的粉料；粉料添加粘结剂，过筛之后进行造粒，压制成生坯；生坯放入烧结炉中进行排胶，将生坯中的粘结剂排除完全；将排除粘结剂后的胚体在氮氢混合气体氛围下烧结，得到最终样品。本发明通过施、受主离子共同掺杂改性建立良性电荷补偿机制，制备出兼具高介电常数和良好温度稳定性的高性能钛酸钡基介质陶瓷材料，从而满足MLCC实际应用需求。
Anti-reduction X8R type BaTiO3-based dielectric ceramic material and preparation method thereof
The invention belongs to the technical field of ceramic materials, and discloses an anti-reduction X8R type BaTiO3-based dielectric ceramic material and a preparation method thereof. The chemical formula of the anti-reduction X8R type BaTiO3-based dielectric ceramic material is (1-x)BaTiO3-0.5xBi2O3-0.67xMgO-0.33xZrO2, wherein x is greater than or equal to 0.05 and less than or equal to 0.2. The preparation method comprises the steps of burdening BaTiO3, Bi2O3, MgO and ZrO2, mixing, and carrying out ball milling; carrying out infrared drying and sieving on the raw materials obtained after ball milling to obtain powder with uniform particles; adding a binder into the powder, sieving, granulating, and pressing into a green body; putting the green body into a sintering furnace for glue discharging, and completing removing a binding agent in the green body; and sintering the blank without the binding agent in a nitrogen-hydrogen mixed gas atmosphere to obtain a final sample. According to the invention, a benign charge compensation mechanism is established through co-doping modification of donor ions and acceptor ions, and the high-performance barium titanate-based dielectric ceramic material with high dielectric constant and good temperature stability is prepared, so that the actual application requirements of MLCC are met.
本发明属于陶瓷材料技术领域，公开了一种抗还原X8R型BaTiO3基介质陶瓷材料及其制备方法，其化学式为(1‑x)BaTiO3‑0.5x Bi2O3‑0.67x MgO‑0.33x ZrO2，0.05≤x≤0.2；制备方法为将BaTiO3、Bi2O3、MgO、ZrO2进行配料并混合球磨；球磨后所得原料红外烘干、过筛，得到颗粒均匀的粉料；粉料添加粘结剂，过筛之后进行造粒，压制成生坯；生坯放入烧结炉中进行排胶，将生坯中的粘结剂排除完全；将排除粘结剂后的胚体在氮氢混合气体氛围下烧结，得到最终样品。本发明通过施、受主离子共同掺杂改性建立良性电荷补偿机制，制备出兼具高介电常数和良好温度稳定性的高性能钛酸钡基介质陶瓷材料，从而满足MLCC实际应用需求。
Anti-reduction X8R type BaTiO3-based dielectric ceramic material and preparation method thereof
一种抗还原X8R型BaTiO3基介质陶瓷材料及其制备方法
LI LINGXIA (Autor:in) / XIE JIALING (Autor:in) / XUE KEYING (Autor:in) / WANG MENGLONG (Autor:in)
20.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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