Title:
MAGNETIC MATERIAL COMPOSITION AND COIL COMPONENT
Document Type and Number:
WIPO Patent Application WO/2014/024976
Kind Code:
A1
Abstract:
This magnetic material composition comprises: magnetic alloy particles of an Fe-Si-Cr system, an Fe-Si-Al system or the like, with the surface of each particle being provided with a passivation film; and a glass component that has a softening point of 650-800°C and contains Si, B and an alkali metal such as K, Na or Li. The content of the glass component relative to the total amount of the magnetic alloy particles and the glass component is 12-32 wt%, and a glass phase formed of the glass component is formed between the magnetic alloy particles. A component element (1), in which a coil conductor (2) is embedded, is formed from this magnetic material composition. Consequently, ingress of water or a plating liquid between the magnetic alloy particles can be suppressed, thereby ensuring good insulation without deteriorating the magnetic characteristics.
Inventors:
MAEDA EIICHI (JP)
TAKAHASHI TORU (JP)
TAKAHASHI TORU (JP)
Application Number:
PCT/JP2013/071518
Publication Date:
February 13, 2014
Filing Date:
August 08, 2013
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01F1/24; H01F1/147; H01F17/00; H01F17/04
Foreign References:
| JP2010062424A | 2010-03-18 | |||
| JPH01318213A | 1989-12-22 | |||
| JPH11204336A | 1999-07-30 | |||
| JP2007027354A | 2007-02-01 | |||
| JP2008226960A | 2008-09-25 | |||
| JPH01319910A | 1989-12-26 |
Attorney, Agent or Firm:
KUNIHIRO YASUTOSHI (JP)
Kunihiro Yasutoshi (JP)
Kunihiro Yasutoshi (JP)
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