Title:
BARIUM TITANATE FINE POWDER, CALCIUM-MODIFIED BARIUM TITANATE FINE POWDER AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP3780405
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide high-reliability barium titanate fine powder hardly causing insulation failure when used as a dielectric element, calcium-modified barium titanate fine powder and a method for manufacturing the barium titanate fine powder.
SOLUTION: This method for manufacturing the barium titanate fine powder comprises a step to prepare a barium hydroxide aqueous solution having 0.20-1.20 mol/l barium hydroxide concentration and a titanium alkoxide alcohol solution having 0.088-1.235 mol/l titanium alkoxide concentration, a step to mix the prepared barium hydroxide solution with the prepared titanium alkoxide alcohol solution so that the Ba/Ti molar ratio is 1.00-1.20 to obtain a mixed solution without incorporating other alkali elements in the mixed solution and a step to subject the obtained mixed solution to reaction at 60-100°C.
Inventors:
Tomohisa Tonogaki
Hiroi Torii
Kenjiro Gomi
Takahiro Motokawa
Kenji Tanaka
Masaru Kojima
Hiroi Torii
Kenjiro Gomi
Takahiro Motokawa
Kenji Tanaka
Masaru Kojima
Application Number:
JP2000244885A
Publication Date:
May 31, 2006
Filing Date:
August 11, 2000
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
C01G23/00; C04B35/46; H01G4/12; (IPC1-7): C01G23/00; //H01G4/12
Domestic Patent References:
| JP2059426A |