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Strontium titanate-based ceramic material as well as preparation method and application thereof
The invention discloses a strontium titanate-based ceramic material and a preparation method and an application thereof, the strontium titanate-based ceramic material has a core-shell structure, the composition general formula of the strontium titanate-based ceramic material is (1-x)SrTiO3-xBiFeO3-yNb, x is greater than 0 and less than or equal to 0.9, and y is greater than 0 and less than or equal to 0.1. The preparation method comprises the following steps: calculating and weighing the raw materials Bi2O3, Fe2O3, SrCO3, TiO2 and Nb2O5 according to a composition general formula, and rolling the raw materials to obtain raw material mixed slurry; drying the raw material mixed slurry and grinding into powder; pre-sintering the powder to obtain pre-sintered ceramic powder; carrying out ball milling on the pre-sintered ceramic powder to obtain mixed slurry; drying the mixed slurry and grinding into powder; adding a polyvinyl alcohol aqueous solution into the powder, uniformly stirring, and grinding to obtain powder; and tabletting the powder, and sintering to obtain the strontium titanate-based ceramic material. The strontium titanate-based ceramic material has a core-shell structure, the electrical properties can be adjusted along with the change of components, and the strontium titanate-based ceramic material can be used as a dielectric material of a multilayer ceramic capacitor; and the preparation process is simple, low in cost and suitable for large-scale production.
本发明公开了一种钛酸锶基陶瓷材料及其制备方法和应用，所述钛酸锶基陶瓷材料具有核壳结构，其组成通式为：(1‑x)SrTiO3‑xBiFeO3‑yNb，其中，0＜x≤0.9，0＜y≤0.1。制备方法包括：按组成通式计算称量原料Bi2O3、Fe2O3、SrCO3、TiO2及Nb2O5，将原料进行辊磨得到原料混合浆料；将原料混合浆料烘干并研磨成粉体；将粉体进行预烧得到预烧后的陶瓷粉体；将预烧后的陶瓷粉体进行球磨得到混合浆料；将混合浆料烘干并研磨成粉体；将聚乙烯醇水溶液加入到粉体中，搅拌均匀，研磨得到粉料；将粉料压片，然后烧结得到钛酸锶基陶瓷材料。本申请钛酸锶基陶瓷材料具有核壳结构，电学性能随着成分变化可以进行调节，可用做多层陶瓷电容器的介质材料；制备工艺简单、成本低，适合规模化生产。
Strontium titanate-based ceramic material as well as preparation method and application thereof
The invention discloses a strontium titanate-based ceramic material and a preparation method and an application thereof, the strontium titanate-based ceramic material has a core-shell structure, the composition general formula of the strontium titanate-based ceramic material is (1-x)SrTiO3-xBiFeO3-yNb, x is greater than 0 and less than or equal to 0.9, and y is greater than 0 and less than or equal to 0.1. The preparation method comprises the following steps: calculating and weighing the raw materials Bi2O3, Fe2O3, SrCO3, TiO2 and Nb2O5 according to a composition general formula, and rolling the raw materials to obtain raw material mixed slurry; drying the raw material mixed slurry and grinding into powder; pre-sintering the powder to obtain pre-sintered ceramic powder; carrying out ball milling on the pre-sintered ceramic powder to obtain mixed slurry; drying the mixed slurry and grinding into powder; adding a polyvinyl alcohol aqueous solution into the powder, uniformly stirring, and grinding to obtain powder; and tabletting the powder, and sintering to obtain the strontium titanate-based ceramic material. The strontium titanate-based ceramic material has a core-shell structure, the electrical properties can be adjusted along with the change of components, and the strontium titanate-based ceramic material can be used as a dielectric material of a multilayer ceramic capacitor; and the preparation process is simple, low in cost and suitable for large-scale production.
本发明公开了一种钛酸锶基陶瓷材料及其制备方法和应用，所述钛酸锶基陶瓷材料具有核壳结构，其组成通式为：(1‑x)SrTiO3‑xBiFeO3‑yNb，其中，0＜x≤0.9，0＜y≤0.1。制备方法包括：按组成通式计算称量原料Bi2O3、Fe2O3、SrCO3、TiO2及Nb2O5，将原料进行辊磨得到原料混合浆料；将原料混合浆料烘干并研磨成粉体；将粉体进行预烧得到预烧后的陶瓷粉体；将预烧后的陶瓷粉体进行球磨得到混合浆料；将混合浆料烘干并研磨成粉体；将聚乙烯醇水溶液加入到粉体中，搅拌均匀，研磨得到粉料；将粉料压片，然后烧结得到钛酸锶基陶瓷材料。本申请钛酸锶基陶瓷材料具有核壳结构，电学性能随着成分变化可以进行调节，可用做多层陶瓷电容器的介质材料；制备工艺简单、成本低，适合规模化生产。
Strontium titanate-based ceramic material as well as preparation method and application thereof
一种钛酸锶基陶瓷材料及其制备方法和应用
WANG DAWEI (author) / WANG YUANYUAN (author) / DU YUXIAO (author) / LIU HONGBO (author) / YU SHUHUI (author) / SUN RONG (author)
2021-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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