Title:
PROCESS FOR PRODUCING LAMINATED CERAMIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2004/038743
Kind Code:
A1
Abstract:
A process for producing a laminated ceramic capacitor, comprising the steps of alternately stacking ceramic green sheets, the ceramic green sheets containing a ceramic raw material consisting of barium titanate, and internal electrodes to thereby form a laminate (a); firing the laminate to thereby form a sintered body (b); and forming external electrodes on end faces of the sintered body to thereby obtain a laminated ceramic capacitor (c). The above barium titanate, on its X-ray diffraction chart, has a diffraction line ascribed to (002) face and a diffraction line ascribed to (200) face, wherein the ratio (I(200)/Ib) of peak intensity (I(200)) at the peak angle (2Ѳ(200)) of diffraction line ascribed to (200) face to diffraction intensity (Ib) at the angle at the middle point between peak angle (2Ѳ(002)) of diffraction line ascribed to (002) face and peak angle (2Ѳ(200)) of diffraction line ascribed to (200) face is in the range of 2 to 10. Further, with respect to the above barium titanate, the product (r·Sa) of average particle diameter (r, μm) multiplied by specific surface area (Sa, m2/g) is in the range of 1 to 2.
Inventors:
HIRATA KAZUKI (JP)
OKA KENJI (JP)
KOMATSU KAZUHIRO (JP)
NAGAI ATSUO (JP)
OKA KENJI (JP)
KOMATSU KAZUHIRO (JP)
NAGAI ATSUO (JP)
Application Number:
PCT/JP2003/013667
Publication Date:
May 06, 2004
Filing Date:
October 24, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
HIRATA KAZUKI (JP)
OKA KENJI (JP)
KOMATSU KAZUHIRO (JP)
NAGAI ATSUO (JP)
HIRATA KAZUKI (JP)
OKA KENJI (JP)
KOMATSU KAZUHIRO (JP)
NAGAI ATSUO (JP)
International Classes:
C04B35/468; H01G4/06; H01G4/12; H01G4/228; H01G4/30; H01G7/00; H05K3/36; (IPC1-7): H01G4/12; H01G4/30
Domestic Patent References:
| WO2000048963A1 | 2000-08-24 |
Foreign References:
| JP2001345230A | 2001-12-14 | |||
| JPH08183659A | 1996-07-16 | |||
| JP2001163675A | 2001-06-19 | |||
| JPH06318404A | 1994-11-15 | |||
| JP2000277368A | 2000-10-06 | |||
| JP2002234769A | 2002-08-23 | |||
| JP2003068561A | 2003-03-07 |
Other References:
See also references of EP 1460658A4
Attorney, Agent or Firm:
Ishii, Kazuo (3-6 Kitahama 2-chome, Chuo-k, Osaka-shi Osaka, JP)
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