EP 3522186 A4 20200506 - NANOCRYSTAL ALLOY MAGNETIC CORE, MAGNETIC CORE UNIT, AND METHOD FOR MANUFACTURING NANOCRYSTAL ALLOY MAGNETIC CORE
Title (en)
NANOCRYSTAL ALLOY MAGNETIC CORE, MAGNETIC CORE UNIT, AND METHOD FOR MANUFACTURING NANOCRYSTAL ALLOY MAGNETIC CORE
Title (de)
MAGNETKERN AUS EINER NANOKRISTALLINEN LEGIERUNG, MAGNETKERNEINHEIT UND VERFAHREN ZUR HERSTELLUNG EINES MAGNETKERNS AUS EINER NANOKRISTALLINEN LEGIERUNG
Title (fr)
NOYAU MAGNÉTIQUE EN ALLIAGE NANOCRISTALLIN, UNITÉ DE NOYAU MAGNÉTIQUE ET PROCÉDÉ DE FABRICATION DE NOYAU MAGNÉTIQUE EN ALLIAGE NANOCRISTALLIN
Publication
Application
Priority
- JP 2016190806 A 20160929
- JP 2017130920 A 20170704
- JP 2017130921 A 20170704
- JP 2017130922 A 20170704
- JP 2017130923 A 20170704
- JP 2017035030 W 20170927
Abstract (en)
[origin: EP3522186A1] A nanocrystalline alloy magnetic core production method for nanocrystallization of a magnetic core formed of a wound or layered amorphous alloy ribbon by a heat treatment, includes a primary heat treatment step of performing a primary heat treatment in the absence of an applied magnetic field to increase a temperature of the magnetic core from a temperature that is lower than a crystallization onset temperature of the magnetic core to a temperature that is higher than or equal to the crystallization onset temperature, and a secondary heat treatment step performed after the primary heat treatment step. The secondary heat treatment step includes a secondary temperature maintaining step of maintaining the temperature constant at a temperature that is higher than or equal to 200°C and lower than the crystallization onset temperature, in the absence of an applied magnetic field, and a secondary temperature decreasing step of, after the secondary temperature maintaining step, decreasing the temperature in the presence of a magnetic field applied in a direction perpendicular to a magnetic path.
IPC 8 full level
H01F 41/02 (2006.01); C21D 6/00 (2006.01); C22C 38/00 (2006.01); H01F 1/153 (2006.01); H01F 3/04 (2006.01); H01F 41/00 (2006.01)
CPC (source: EP)
C21D 6/00 (2013.01); H01F 1/15308 (2013.01); H01F 1/15333 (2013.01); H01F 3/04 (2013.01); H01F 41/005 (2013.01); H01F 41/0226 (2013.01); C22C 38/00 (2013.01)
Citation (search report)
- [X] US 5611871 A 19970318 - YOSHIZAWA YOSHIHITO [JP], et al
- [X] JP 2000328206 A 20001128 - HITACHI METALS LTD
- [A] US 4528481 A 19850709 - BECKER JOSEPH J [US], et al
- See references of WO 2018062310A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3522186 A1 20190807; EP 3522186 A4 20200506; EP 3522186 B1 20221102; CN 109716463 A 20190503; CN 109716463 B 20210409; JP 2019201215 A 20191121; JP 2021002663 A 20210107; JP 6729705 B2 20200722; JP 6849023 B2 20210324; JP 7028290 B2 20220302; JP WO2018062310 A1 20190624; WO 2018062310 A1 20180405
DOCDB simple family (application)
EP 17856259 A 20170927; CN 201780056925 A 20170927; JP 2017035030 W 20170927; JP 2018542802 A 20170927; JP 2019136155 A 20190724; JP 2020143138 A 20200827