Title:
POWDER MAGNETIC CORE FOR REACTOR
Document Type and Number:
WIPO Patent Application WO/2014/157517
Kind Code:
A1
Abstract:
Provided is a powder magnetic core for a reactor in which, even when applied to a reactor used in a state in which the core is exposed without being potted, the electromagnetic properties do not readily change over time. The powder magnetic core for a reactor essentially comprises a powder compact made from an insulation-coated-iron-based soft magnetic powder in which an insulating coating film is formed on the surface of an iron-based soft magnetic powder, the change over time of the powder compact over 500 hours at 180ºC being such that the effective permeability decreases by no more than 1%. The porosity between two adjacent insulation-coated-iron-based soft magnetic powder particles in the powder compact is no greater than 2 vol%.
Inventors:
INAGAKI TAKASHI (JP)
ISHIHARA CHIO (JP)
NAKAYAMA NORIYUKI (JP)
ISHIHARA CHIO (JP)
NAKAYAMA NORIYUKI (JP)
Application Number:
PCT/JP2014/058857
Publication Date:
October 02, 2014
Filing Date:
March 27, 2014
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD (JP)
International Classes:
H01F1/14; H01F27/24; H01F1/24; H01F37/00
Foreign References:
| JP2007059656A | 2007-03-08 | |||
| JP2011233860A | 2011-11-17 |
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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