EP 1514282 B1 20090415 - SOFT MAGNETIC POWDER COMPOSITE MATERIAL, METHOD FOR THE PRODUCTION THEREOF AND USE OF THE SAME
Title (en)
SOFT MAGNETIC POWDER COMPOSITE MATERIAL, METHOD FOR THE PRODUCTION THEREOF AND USE OF THE SAME
Title (de)
WEICHMAGNETISCHER PULVERVERBUNDWERKSTOFF; VERFAHREN ZU DESSEN HERSELLUNG UND DESSEN VERWENDUNG
Title (fr)
MATIERE COMPOSITE EN POUDRE MAGNETIQUE DOUCE, SES PROCEDES DE PRODUCTION ET D'UTILISATION
Publication
Application
Priority
- DE 0300211 W 20030127
- DE 10225154 A 20020606
Abstract (en)
[origin: WO03105161A1] The invention relates to a soft magnetic powder composite material consisting of at least 99.4 mass % of a pure iron powder, a phosphated iron powder or an iron alloy powder and between 0.05 mass % and 0.6 mass % of a soft ferrite powder. Said soft magnetic powder composite material is especially suitable for using in rapidly switching electrovalves in the engines of motor vehicles. The invention also relates to a method for producing one such powder composite material, comprising the following steps: a) a starting mixture is prepared, consisting of a pure iron powder, a phosphated iron powder or an iron alloy powder and a soft ferrite powder, b) the starting mixture is mixed, c) the starting mixture is compressed in a press under high pressure, d) the compressed starting mixture is released in an inert gas atmosphere or a gas atmosphere containing oxygen, and e) the compressed starting mixture is subjected to heat treatment in an oxidising gas atmosphere at a temperature of between 410 DEG C and 500 C.
IPC 8 full level
H01F 1/24 (2006.01); H01F 1/33 (2006.01); F16K 31/02 (2006.01); H01F 1/34 (2006.01); H01F 1/37 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP US)
H01F 1/33 (2013.01 - EP US); H01F 41/0246 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03105161 A1 20031218; AT E429020 T1 20090515; AU 2003206641 A1 20031222; CN 1331169 C 20070808; CN 1656575 A 20050817; DE 10225154 A1 20040115; DE 10225154 B4 20120606; DE 50311421 D1 20090528; EP 1514282 A1 20050316; EP 1514282 B1 20090415; JP 2005536036 A 20051124; US 2005217759 A1 20051006; US 7686894 B2 20100330
DOCDB simple family (application)
DE 0300211 W 20030127; AT 03704253 T 20030127; AU 2003206641 A 20030127; CN 03811970 A 20030127; DE 10225154 A 20020606; DE 50311421 T 20030127; EP 03704253 A 20030127; JP 2004512146 A 20030127; US 51573805 A 20050422