Title:
POWDER MAGNETIC CORE, METHOD OF MANUFACTURING POWDER MAGNETIC CORE, AND HEAT GENERATION SUPPRESSION METHOD
Document Type and Number:
Japanese Patent JP2016163008
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a powder magnetic core which suppresses heat generation incident to phase transformation of soft magnetic powder.SOLUTION: A powder magnetic core contains amorphous soft magnetic alloy powder, and an additive having at least one endothermic peak in a range of the first crystallization start temperature -50°C or more of the amorphous soft magnetic alloy powder, and less than a second crystallization start temperature. The amount of the additive is 0.05-0.6 wt% of the amorphous soft magnetic alloy powder. The additive is a fatty acid salt, and the fatty acid salt is a stearate, more preferably lithium stearate.SELECTED DRAWING: Figure 4
Inventors:
CHIBA MIHO
KANAMORI HISASHI
URATA KENRI
KANAMORI HISASHI
URATA KENRI
Application Number:
JP2015043486A
Publication Date:
September 05, 2016
Filing Date:
March 05, 2015
Export Citation:
Assignee:
NEC TOKIN CORP
International Classes:
H01F1/153; B22F1/00; B22F3/00; B22F3/02; H01F1/22
Domestic Patent References:
| JP2014138052A | 2014-07-28 | |||
| JP2014229839A | 2014-12-08 | |||
| JP2008294411A | 2008-12-04 | |||
| JPH03146615A | 1991-06-21 |
Foreign References:
| WO2010084900A1 | 2010-07-29 |
Other References:
阿部仁、田代信介、三好慶典: "ステアリン酸亜鉛の熱分解特性評価モデルの検討", 日本原子力学会和文論文誌, vol. ６巻１号, JPN6018047744, 7 March 2007 (2007-03-07), JP, pages 10 - 21, ISSN: 0004149366
Attorney, Agent or Firm:
Kenho Ikeda
Takashi Sasaki
Takashi Sasaki