EP 1474812 A1 20041110 - LOW-FREQUENCY MAGNETIC SCREENING MADE FROM A SOFT MAGNETIC ALLOY
Title (en)
LOW-FREQUENCY MAGNETIC SCREENING MADE FROM A SOFT MAGNETIC ALLOY
Title (de)
AUS EINER WEICHMAGNETISCHEN LEGIERUNG HERGESTELLTE NIEDERFREQUENZ-MAGNETABSCHIRMUNG
Title (fr)
BLINDAGE MAGNETIQUE BASSE FREQUENCE EN ALLIAGE MAGNETIQUE DOUX
Publication
Application
Priority
- FR 0300491 W 20030214
- FR 0201901 A 20020215
Abstract (en)
[origin: WO03069637A1] The invention relates to a magnetic screening for frequency fields between 50 Hz and 3000 Hz, made from a soft magnetic alloy of the following composition in wt. %: 30 % </= Ni </= 40 %, 0 % </= Cu + Co </= 4 %, 5 % </= Cr + Mo </= 17 %, 5 % </= Cr, 0 % </= Nb </= 2 %, Mn </= 0.35 %, Si </= 0.2 %, C </= 0.050 %, O </= 0.0160 %, S </= 0.0020 %, B </= 0.0010 %, optionally at least one element selected from magnesium and calcium in amounts such that the sum thereof remains below 0.1 %, the rest being iron and production impurities. The chemical composition furthermore satisfies the following relationships: Cr + Mo </= 0.8 x Ni + 0.9 x (Co + Cu) 18.4; Cr + Mo </= 4 x Ni + 3 x (Co + Cu) - 124; 4 x (Cr + Mo) >/= 125 - 3 x Ni. The invention further relates to use of said alloy for the production of low-frequency magnetic screening.
IPC 1-7
IPC 8 full level
C22C 38/40 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/52 (2006.01); H01F 1/147 (2006.01); H05K 9/00 (2006.01)
CPC (source: EP US)
C22C 38/40 (2013.01 - EP US); C22C 38/42 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/52 (2013.01 - EP US); H01F 1/14708 (2013.01 - EP US); H05K 9/0075 (2013.01 - EP US)
Citation (search report)
See references of WO 03069637A1
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 03069637 A1 20030821; AU 2003229824 A1 20030904; EP 1474812 A1 20041110; FR 2836156 A1 20030822; FR 2836156 B1 20050107; JP 2006510799 A 20060330; US 2006096670 A1 20060511
DOCDB simple family (application)
FR 0300491 W 20030214; AU 2003229824 A 20030214; EP 03722655 A 20030214; FR 0201901 A 20020215; JP 2003568672 A 20030214; US 50469805 A 20050310