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1 681 559

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IPC

(21) (22)

Application

4784928/02, 1989-12-14

(22)

Actual filing date

1989-12-14

(45)

Published

1994-01-30

(72)

Inventor

Verklov M.M.Kosynkin V.D.Bykov A.D.Bystrov A.N.Antonov V.I.Kobozev V.N.Korchagin V.P.Potanin S.V.Lileev A.S.Mel'Nikov S.A.Oreshkin M.A.Menushenkov V.P.

ALLOYING MASTER FOR ALLOYS PRODUCTION FOR PERMANENT MAGNETS Russian patent published in 1994 - IPC

Abstract SU 1681559 A1

FIELD: alloying masters of alloy production. SUBSTANCE: alloying master has, % by weight: Nd 335-85; Pr 1-25; Ca 0,3-1,5, and Fe - the rest. Alloy consisting of 37% rare-earth metals, 1,3% B-Fe is made from charge, which contains proposed alloying master, Armco iron and ferroboron. Impurities of fluorine and oxygen in alloy are decreased significantly, extraction degree of rare-earth metals is increased up to 94-95% . Magnetic properties of permanent magnets that are caked from alloy powders are the following: Br 1,15-1,18 T; (BH)_max = 200-221 kJ/m³; bH_c = 431-465 kA/m, and JH_c = 434-483 kA/m. EFFECT: enhanced quality of alloying master. 1 tbl

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SU 1 681 559 A1

Authors

Verklov M.M.

Kosynkin V.D.

Bykov A.D.

Bystrov A.N.

Antonov V.I.

Kobozev V.N.

Korchagin V.P.

Potanin S.V.

Lileev A.S.

Mel'Nikov S.A.

Oreshkin M.A.

Menushenkov V.P.

Dates

1994-01-30—Published

1989-12-14—Filed