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1. (WO1990014911) MAGNETIC ALLOY COMPOSITIONS AND PERMANENT MAGNETS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1990/014911 International Application No.: PCT/US1990/002942
Publication Date: 13.12.1990 International Filing Date: 24.05.1990
Chapter 2 Demand Filed: 28.12.1990
IPC:
H01F 1/055 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1
Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01
of inorganic materials
03
characterised by their coercivity
032
of hard-magnetic materials
04
metals or alloys
047
Alloys characterised by their composition
053
containing rare earth metals
055
and magnetic transition metals, e.g. SmCo5
Applicants: SPS TECHNOLOGIES, INC.[US/US]; Yardley Road Newtown, PA 18940, US
Inventors: BOGATIN, Yakov; US
Agent: SANTISI, Leonard, J.; Curtis, Morris & Safford 530 Fifth Avenue New York, NY 10036, US
Priority Data:
357,84530.05.1989US
Title (EN) MAGNETIC ALLOY COMPOSITIONS AND PERMANENT MAGNETS
(FR) COMPOSITIONS D'ALLIAGES MAGNETIQUES ET AIMANTS PERMANENTS
Abstract:
(EN) This invention relates to novel permanent magnet alloy compositions and high energy permanent magnets comprising from about 0.5 to about 27 atomic percent R wherein R is at least one rare earth element including Y and Sc, from about 0.1 to about 53 atomic percent A wherein A is at least one actinide element, and the balance being at least one metal wherein at least about 50 weight percent of the balance is at least one metal selected from the group consisting of Fe, Co, Ni, and Mn. Preferably, R is from about 12 to about 18 atomic percent and R is a rare earth element selected from the group consisting of Sm, Nd, Pr, and Dy. It is also preferred that A is from about 1.5 to about 5.1 atomic percent and A is an actinide element selected from the group consisting of Ac, Th, Pa and U. The balance is preferably at least about 90 weight percent of Fe and/or Co, and further comprises from about 0.1 to about 10 weight percent of Zr and/or Cu.
(FR) Cette invention concerne de nouvelles compositions d'alliages d'aimants permanents et des aimants permanents de grande énergie, comprenant, en pourcentage atomique, entre 0,5 et 27 environ de R, R étant au moins un élément de terre rare incluant Y et Sc, entre 0,1 environ et 53 de A, A étant au moins un élément actinide, le solde étant au moins un métal, ce solde étant constitué par 50 % en poids environ d'au moins un métal sélectionné dans le groupe comprenant Fe , Co, Ni et Mn. De préférence, R est compris, en pourcentage atomique, entre 12 et 18 environ et R est un élément de terre rare sélectionné dans le groupe comprenant Sm, Nd, Pr et Dy. Il est également préféré que A représente, en pourcentage atomique, entre 1,5 et 5,1 environ, et que A représente un élément actinide sélectionné dans le groupe constitué de Ac, Th, Pa et U. Le solde est de préférence d'au moins 90 % en poids de Fe et/ou Co, et comprend en outre entre 0,1 et 10 % en poids de Zr et/ou Cu.
Designated States: BR, JP, KR
European Patent Office (EPO) (AT, BE, CH, DE, DK, ES, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)