EP 3157021 A1 20170419 - METHOD FOR PRODUCING FE-BASED NANOCRYSTALLINE ALLOY CORE
Title (en)
METHOD FOR PRODUCING FE-BASED NANOCRYSTALLINE ALLOY CORE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES FE-BASIERTEN NANOKRISTALLINEN LEGIERUNGSKERNS
Title (fr)
PROCÉDÉ DE FABRICATION DE NOYAU EN ALLIAGE NANOCRISTALLIN À BASE DE FER
Publication
Application
Priority
- JP 2014119178 A 20140610
- JP 2015066758 W 20150610
Abstract (en)
A core is obtained by winding an Fe-based nanocrystalline alloy ribbon, the core having an impedance relative permeability µrz of 90,000 or more at a frequency of 10 kHz, 40,000 or more at a frequency of 100 kHz, and 8,500 or more at a frequency of 1 MHz. The Fe-based nanocrystalline alloy core is produced through a heat treatment step which includes a magnetic field application step of applying a magnetic field in a height direction of the core for not less than 10 minutes and not more than 60 minutes, within only a temperature range in a period of temperature elevation spanning from a temperature which is 25°C higher than a crystallization onset temperature by differential scanning calorimeter to a temperature which is 60°C higher than the crystallization onset temperature.
IPC 8 full level
H01F 27/24 (2006.01); H01F 1/153 (2006.01); H01F 3/04 (2006.01); H01F 27/25 (2006.01); H01F 41/02 (2006.01); C22C 33/08 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/12 (2006.01); C22C 38/16 (2006.01); C22C 45/02 (2006.01)
CPC (source: EP)
C22C 33/08 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/12 (2013.01); C22C 38/16 (2013.01); C22C 45/02 (2013.01); H01F 1/15333 (2013.01); H01F 3/04 (2013.01); H01F 41/0226 (2013.01); C22C 2202/02 (2013.01)
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3157021 A1 20170419; EP 3157021 A4 20180523; EP 3157021 B1 20200325; CN 106170837 A 20161130; CN 106170837 B 20180410; EP 3693980 A1 20200812; ES 2791885 T3 20201106; JP 6137408 B2 20170531; JP WO2015190528 A1 20170420; WO 2015190528 A1 20151217
DOCDB simple family (application)
EP 15807434 A 20150610; CN 201580019461 A 20150610; EP 20160649 A 20150610; ES 15807434 T 20150610; JP 2015066758 W 20150610; JP 2016527844 A 20150610