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1 827 119

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A3

(51)

IPC

(21) (22)

Application

4936958/02, 1991-05-21

(22)

Actual filing date

1991-05-21

(45)

Published

1995-05-10

(72)

Inventor

Barkovskij A.I.Volkov N.A.Shabatin V.P.

(73)

Holder

Filial Vsesojuznogo Nauchno-Issledovatel'Skogo Instituta Ehlektromekhaniki

SILVER BASED MATERIAL FOR ELECTRIC CONTACTS AND A METHOD FOR ITS MANUFACTURING Russian patent published in 1995 - IPC

Abstract SU 1827119 A3

FIELD: powder metallurgy. SUBSTANCE: material for electric contacts has silver and manganese oxide of MnO composition with relations among components as follows: 0.3 - 10.0 per cent by weight of manganese oxide of MnO composition, the balance being silver. The method lies in the fact that silver and manganese oxide are coprecipitated from a mixture of aqueous solutions of silver and manganese nitrates in the form of hydroxides, then they are dried and roasted. The charge produced are compressed and sintered in reducing atmosphere. Gaseous hydrogen is used as reducing atmosphere. EFFECT: corrosion resistance. 3 cl, 1 tbl

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SU 1 827 119 A3

Authors

Barkovskij A.I.

Volkov N.A.

Shabatin V.P.

Dates

1995-05-10—Published

1991-05-21—Filed

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