Title:
FERRITE PORCELAIN PRODUCTION METHOD, FERRITE PORCELAIN, AND COIL PART
Document Type and Number:
WIPO Patent Application WO/2011/102452
Kind Code:
A1
Abstract:
Provided are a ferrite porcelain production method, a ferrite porcelain, and a coil part. When an Ni-Cu-Zn ferrite porcelain is produced, Fe2O3, NiO, and ZnO, as well as 5 mol% or less (including 0 mol%), preferably 1.75 mol% or less, of CuO, are mixed to prepare ferrite powder, the ferrite powder is molded, and the product is baked in an atmosphere having an oxygen concentration of 0.1 vol% or less to produce a ferrite porcelain. A core member (3) is then formed from this ferrite porcelain. It is thereby possible to realize a ferrite porcelain production method, a ferrite porcelain, and a coil part with which sintering performance and insulation performance are good and direct-current superimposed properties are good, even when baking is performed at a low temperature of 1,000ºC or less.
Inventors:
YAMAMOTO ATSUSHI (JP)
NAKAMURA AKIHIRO (JP)
KOWADA HIROKI (JP)
NAKAMURA AKIHIRO (JP)
KOWADA HIROKI (JP)
Application Number:
PCT/JP2011/053479
Publication Date:
August 25, 2011
Filing Date:
February 18, 2011
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
YAMAMOTO ATSUSHI (JP)
NAKAMURA AKIHIRO (JP)
KOWADA HIROKI (JP)
YAMAMOTO ATSUSHI (JP)
NAKAMURA AKIHIRO (JP)
KOWADA HIROKI (JP)
International Classes:
C04B35/30; C04B35/26; H01F1/34; H01F17/04; H01F27/255; H01F41/02
Foreign References:
| JP2000327411A | 2000-11-28 | |||
| JPS49122510A | 1974-11-22 | |||
| JPH0461203A | 1992-02-27 | |||
| JPH10226568A | 1998-08-25 | |||
| JP2007169115A | 2007-07-05 | |||
| JPH05175032A | 1993-07-13 | |||
| JP2003272912A | 2003-09-26 |
Attorney, Agent or Firm:
KUNIHIRO YASUTOSHI (JP)
Kunihiro Yasutoshi (JP)
Kunihiro Yasutoshi (JP)
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Claims:
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