Barium zirconate titanate-based capacitor ceramic and preparation method thereof
A barium zirconate titanate and capacitor technology, which is applied in the field of barium zirconate titanate-based capacitor ceramics and its preparation, can solve the problems of poor temperature stability, poor dielectric constant temperature stability, and low room temperature dielectric constant. Achieve the effects of improved temperature stability, high dielectric constant, and cost reduction
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[0023] Example 1
[0024] The chemical formula of porcelain is: 0.97Ba(Zr 0.1 Ti 0.9 )O 3 -0.03Ba(Zn 1 / 3 Nb 2 / 3 )O 3 .
[0025] The preparation method of the porcelain material includes the following steps:
[0026] (1) Weigh 0.2mol, 0.0194mol, 0.1746mol, 0.002mol, 0.002mol BaCO 3 , ZrO 2 , TiO 2 , ZnO and Nb 2 O 5 , Mix to prepare ingredients, put the ingredients, agate balls and deionized water into a nylon ball milling tank at a mass ratio of 1:2:3, and perform wet ball milling in the tank mill at a speed of 110r / min for 24 hours to prepare a slurry Then the slurry was dried at 130°C, the temperature rising rate was controlled to 300°C / h to 1080°C and the temperature was kept and calcined for 2h. The solid phase reaction synthesized 0.97Ba(Zr 0.1 Ti 0.9 )O 3 -0.03Ba(Zn 1 / 3 Nb 2 / 3 )O 3 Main crystalline phase powder;
[0027] (2) After wet ball milling the powder prepared above for 24 hours, it was dried at 120°C, and then 5wt% of polyvinyl alcohol (PVA) aqueous solution was added to...
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[0030] Example 2
[0031] The chemical formula of porcelain is: 0.95Ba(Zr 0.1 Ti 0.9 )O 3 -0.05Ba(Zn 1 / 3 Nb 2 / 3 )O 3 .
[0032] The preparation method of the porcelain material includes the following steps:
[0033] (1) Weigh 0.2mol, 0.019mol, 0.171mol, 0.00333mol, 0.00333mol BaCO 3 , ZrO 2 , TiO 2 , ZnO and Nb 2 O 5 , Mix to prepare ingredients, put the ingredients, agate balls and deionized water into a nylon ball milling tank at a mass ratio of 1:1.5:2.5, and perform wet ball milling in the tank mill at a speed of 110r / min for 24 hours to prepare a slurry Then the slurry was dried at 130°C, the heating rate was controlled to 300°C / h to 1100°C and calcined for 2h, solid-phase reaction synthesized 0.95Ba(Zr 0.1 Ti 0.9 )O 3 -0.05Ba(Zn 1 / 3 Nb 2 / 3 )O 3 Main crystalline phase powder;
[0034] (2) After wet ball milling the powder prepared above for 24 hours, it was dried at 120°C, and then 6% by weight of polyvinyl alcohol (PVA) aqueous solution was added for granulation, passed through ...
Example Embodiment
[0037] Example 3
[0038] The chemical formula of porcelain is: 0.96Ba(Zr 0.1 Ti 0.9 )O 3 -0.04Ba(Zn 1 / 3 Nb 2 / 3 )O 3 .
[0039] The preparation method of the porcelain material includes the following steps:
[0040] (1) Weigh 0.2mol, 0.0192mol, 0.1728mol, 0.00266mol, 0.00266mol BaCO 3 , ZrO 2 , TiO 2 , ZnO and Nb 2 O 5 , Mix to prepare ingredients, put the ingredients, agate balls and deionized water into a nylon ball mill tank at a mass ratio of 1:1.5:2.5, and perform wet ball milling in the tank mill at a speed of 110r / min for 16 hours to prepare a slurry Then the slurry was dried at 130°C, and the heating rate was controlled to 300°C / h to 1050°C and calcined for 2h. The solid-phase reaction synthesized 0.96Ba(Zr 0.1 Ti 0.9 )O 3 -0.04Ba(Zn 1 / 3 Nb 2 / 3 )O 3 Main crystalline phase powder;
[0041] (2) After wet ball milling the powder prepared above for 24 hours, it was dried at 120°C, and then 5wt% of polyvinyl alcohol (PVA) aqueous solution was added to granulate, passed through a 40...
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