EP 0084138 B1 19870225 - NEAR-ZERO MAGNETOSTRICTIVE GLASSY METAL ALLOYS WITH HIGH MAGNETIC AND THERMAL STABILITY
Title (en)
NEAR-ZERO MAGNETOSTRICTIVE GLASSY METAL ALLOYS WITH HIGH MAGNETIC AND THERMAL STABILITY
Publication
Application
Priority
US 34041382 A 19820118
Abstract (en)
[origin: EP0084138A2] A new series of glassy metal alloys with near zero magnetostriction is disclosed. The glassy alloys have the composition CoaFebNicModBeSif, where a ranges from about 58 to 70 atom percent, b ranges from about 2 to 7.5 atom percent, c ranges from about 0 to 8 atom percent, d ranges from about 1 to 2 atom percent, e ranges from about 11 to 15 atom percent and f ranges from about 9 to 14 atom percent with the proviso that the sum of a, b, c ranges from about 72 to 76 atom percent and the sum of e and f ranges from about 23 to 26 atom percent. The magnetostriction of these alloys ranges from about -1 x 10<-><6> to +1 x 10<-><6> and the saturation induction is between about 0.6 and 0.8 Tesla. The transition metal content is responsible for the low magnetostriction in these alloys. The metalloid content strongly affects the saturation induction, Curie temperature, and magnetic stabity. Magnetostriction is mildly affected by the metalloid composition and a particular range of Si/B ratio for certain iron, cobalt containing alloys wherein the magnetostriction is near-zero and relatively insensitive to the Si/B ratio. The same Si/B ratios also provide high magnetic stability.
IPC 1-7
IPC 8 full level
C22C 45/04 (2006.01); H01F 1/153 (2006.01)
CPC (source: EP)
C22C 45/04 (2013.01); H01F 1/15316 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0084138 A2 19830727; EP 0084138 A3 19850821; EP 0084138 B1 19870225; CA 1222647 A 19870609; DE 3275492 D1 19870402; JP H0338334 B2 19910610; JP S58123851 A 19830723
DOCDB simple family (application)
EP 82111754 A 19821217; CA 418542 A 19821223; DE 3275492 T 19821217; JP 652983 A 19830118