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 (10-1,Higashikotari 1-chome,Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
山本 篤史 (〒55 京都府長岡京市東神足１丁目１０番１号 株式会社 村田製作所内 Kyoto, 〒6178555, JP)
NAKAMURA Akihiro (10-1,Higashikotari 1-chome,Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
山本 篤史 (〒55 京都府長岡京市東神足１丁目１０番１号 株式会社 村田製作所内 Kyoto, 〒6178555, JP)
NAKAMURA Akihiro (10-1,Higashikotari 1-chome,Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2011/053479
Publication Date:
August 25, 2011
Filing Date:
February 18, 2011
Export Citation:
Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chomeNagaokakyo-sh, Kyoto 55, 〒6178555, JP)
株式会社 村田製作所 (〒55 京都府長岡京市東神足１丁目１０番１号 Kyoto, 〒6178555, JP)
YAMAMOTO Atsushi (10-1,Higashikotari 1-chome,Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
山本 篤史 (〒55 京都府長岡京市東神足１丁目１０番１号 株式会社 村田製作所内 Kyoto, 〒6178555, JP)
株式会社 村田製作所 (〒55 京都府長岡京市東神足１丁目１０番１号 Kyoto, 〒6178555, JP)
YAMAMOTO Atsushi (10-1,Higashikotari 1-chome,Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
山本 篤史 (〒55 京都府長岡京市東神足１丁目１０番１号 株式会社 村田製作所内 Kyoto, 〒6178555, JP)
International Classes:
C04B35/30; C04B35/26; H01F1/34; H01F17/04; H01F27/255; H01F41/02
Attorney, Agent or Firm:
KUNIHIRO Yasutoshi (10F Samty shinosaka front Bldg, 14-10 Nishinakajima 5-chome,Yodogawaku, Osaka-shi, Osaka 11, 〒5320011, JP)
Claims:
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