MAGNETIC BODY MATERIAL, IRON CORE, AND ROTARY ELECTRIC MACHINE

WIPO Patent Application WO/2022/224818

A1

The present invention provides: a magnetic body material with which a saturation magnetic flux density higher than that of iron nitride α"-Fe16N2 can be obtained; and an iron core and a rotary electric machine which use the same. Provided is a magnetic body material comprising iron and nitrogen, said magnetic body material comprising body-centered cubic (bct) crystals that contain iron and nitrogen, wherein the mole ratio of iron to nitrogen contained in the bct crystals exceeds 8. Also provided is an iron core in which soft magnetic steel plates are layered, wherein some or all of the soft magnetic steel plates are formed from a magnetic body material which contains body-centered cubic (bct) crystals that contain iron and nitrogen and in which the mole ratio of iron to nitrogen contained in the bct crystals exceeds 8. Also provided is a rotary electric machine comprising an iron core in which soft magnetic steel plates are layered, wherein some or all of the soft magnetic steel plates are formed from a magnetic body material which contains body-centered cubic (bct) crystals that contain iron and nitrogen and in which the mole ratio of iron to nitrogen contained in the bct crystals exceeds 8.

ASARI YUSUKE (JP)
TABATA TOMOHIRO (JP)
TAMURA SHINYA (JP)
KOMURO MATAHIRO (JP)
TERADA SHOHEI (JP)

PCT/JP2022/017115

October 27, 2022

April 05, 2022

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HITACHI LTD (JP)

C21D6/00; C22C38/00; H01F1/147; H01F1/16; H01F27/245

JPH0574620A	1993-03-26
JP2019143238A	2019-08-29

ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)

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