Title:
TERMINAL-ATTACHED DUST CORE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/174268
Kind Code:
A1
Abstract:
Provided are a terminal-attached dust core in which a metallic magnetic material of an Fe-base alloy is used, and a method for manufacturing the same, the dust core having improved insulation between terminals and increased terminal adhesion strength. The terminal-attached dust core is provided with: a dust core configured from particles of an Fe-base alloy including Fe and an element M (M is at least one of Cr or Al) which is more easily oxidizable than Fe; and at least two terminals formed at an interval on a surface of the dust core. The dust core comprises the Fe-base alloy particles, the element M (M is at least one of Cr or Al) formed on a surface of the Fe-base alloy particles, and an underlayer including Fe and O. A first layer including at least one of Cr or Al and O is formed on a surface including areas in which the terminals of the dust core are formed. The terminals are formed on the surface of the first layer. Each of the terminals comprises a second layer including one of Au, Ag, Cu, Ti, or Cr.
Inventors:
UCHIKAWA AKIO (JP)
Application Number:
PCT/JP2018/011860
Publication Date:
September 27, 2018
Filing Date:
March 23, 2018
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01F27/255; H01F1/24; H01F27/29; H01F41/02
Foreign References:
| JP2016027643A | 2016-02-18 | |||
| JP2004235428A | 2004-08-19 | |||
| JP2012009548A | 2012-01-12 | |||
| JP2013254917A | 2013-12-19 | |||
| JP2008258234A | 2008-10-23 | |||
| JP2014143301A | 2014-08-07 | |||
| JPS6025114Y2 | 1985-07-27 | |||
| JP2016027643A | 2016-02-18 |
Other References:
See also references of EP 3605567A4
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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