EP 0018942 A1 19801112 - Ductile magnetic alloys, method of making same and magnetic body.

Title (en)

Ductile magnetic alloys, method of making same and magnetic body.

Title (de)

Duktile magnetische Legierungen, Verfahren zu ihrer Herstellung und Magnet.

Title (fr)

Alliages magnétiques ductiles, procédé pour leur fabrication et corps magnétique.

Publication

EP 0018942 A1 19801112 (EN)

Application

EP 80810124 A 19800411

Priority

US 2947779 A 19790412

Abstract (en)

Magnetic alloys of a ternary composition as defined within the region A, B, C, D of the ternary diagram of fig. 5, wherein X is one or more metals selected from the group which consists of iron, nickel, aluminum, chromium, copper, molybdenum and manganese and preferably includes 0.1 to 10% atomic iron and/or chromium (most advantageously 1 to 5% atomic chromium of the entire alloy), are cast and rendered ductile by the formation within the material during solidification of at least two phases. One of the phases is preferably ductile and formed essentially of fibers or dendrites of Co and the other phase or phases are from those normally ground in rare-earth/cobalt magnets. The alloy is magnetically hardened by precipitation hardening. The chromium appears predominantly in the fiber or dendrite phase and promotes the formation of the latter.

IPC 1-7

C22C 19/07; H01F 1/04

IPC 8 full level

C22F 1/10 (2006.01); C22C 1/02 (2006.01); C22C 19/07 (2006.01); H01F 1/053 (2006.01); H01F 1/055 (2006.01)

CPC (source: EP)

C22C 19/07 (2013.01); H01F 1/055 (2013.01)

Citation (search report)

CH 601481 A5 19780714 - FAR FAB ASSORTIMENTS REUNIES
DE 2507105 A1 19760701 - BBC BROWN BOVERI & CIE
CH 529429 A 19721015 - PHILIPS NV [NL]
DE 2143866 A1 19720309 - BATTELLE MEMORIAL INSTITUTE
DE 2017234 A1 19710715 - BBC BROWN BOVERI & CIE
DE 1809535 C3 19750911
DE 2558865 A1 19770616 - BBC BROWN BOVERI & CIE
DE 2406782 B2 19780622
DE 2727243 A1 19771229 - HITACHI METALS LTD
DE 2443071 A1 19760212 - BBC BROWN BOVERI & CIE

Designated contracting state (EPC)

CH DE FR GB LI NL

DOCDB simple family (publication)

EP 0018942 A1 19801112; EP 0018942 B1 19840704; DE 3068420 D1 19840809; JP S5613454 A 19810209

DOCDB simple family (application)

EP 80810124 A 19800411; DE 3068420 T 19800411; JP 4695680 A 19800411