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2 413 320

(13)

(51)

IPC

H01F1/22(2006-01-01)

B22F3/12(2006-01-01)

C22C33/02(2006-01-01)

(21) (22)

Application

2009120899/02, 2009-06-01

(24)

Start date

2009-06-01

(22)

Actual filing date

2009-06-01

(45)

Published

2011-02-27

(72)

Inventor

Dorogina Galina Anatol'EvnaBalakirev Vladimir FedorovichEhstemirova Svetlana Khusanovna

(73)

Holder

Uchrezhdenie Rossijskoj Akademii Nauk Institut Metallurgii Ural'Skogo Otdelenija Ran Uro Ran)

PROCEDURE FOR PRODUCTION OF MAGNETIC SOFT MATERIAL Russian patent published in 2011 - IPC H01F1/22 B22F3/12 C22C33/02

Abstract RU 2413320 C1

FIELD: metallurgy.

SUBSTANCE: there is prepared charge containing 3-7 wt % of silicon powder, powder of ferrophosphorus at amount facilitating contents of phosphorus in charge not more, than 0.5 wt % and powder of iron as base. Produced mixture is compressed, is subjected to at least one operation of annealing at temperature 1100-1300°C with successive cooling and is sintered in atmosphere of nitrogen gas by cyclic method by alternating annealing and cooling till there are obtained required magnetic properties.

EFFECT: produced material possesses high specific electric resistance and low losses for eddy currents at satisfactory coercion force and magnetisation.

5 tbl, 3 ex

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RU 2 413 320 C1

Authors

Dorogina Galina Anatol'Evna

Balakirev Vladimir Fedorovich

Ehstemirova Svetlana Khusanovna

Dates

2011-02-27—Published

2009-06-01—Filed