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2 075 541

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C1

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IPC

(21) (22)

Application

95102538/02, 1995-02-21

(22)

Actual filing date

1995-02-21

(45)

Published

1997-03-20

(72)

Inventor

Denjushina G.A.Ponomarenko A.G.Kagan E.Sh.

(73)

Holder

Nauchno-Promyshlennoe I Kommercheskoe Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju Invek Rd Limited

METHOD OF PHOSPHATIZATION OF ARTICLE SURFACE FROM ALLOY WITH HIGH CONTENT OF CHROMIUM AND NICKEL Russian patent published in 1997 - IPC

Abstract RU 2075541 C1

FIELD: phosphatization. SUBSTANCE: method of phosphatization of article surface from alloy with high content of chromium and nickel includes mechanical cleaning of the surface, its degreasing, washing in running tap and distilled waters, activation in 5- 7% solution of 4-amino-2,2,6,6-tetramethylpiperidine in organic solvent which is in form of mixture of N-methylpyrrolidone with butyl alcohol in ratio of 1:1 and subsequent phosphatization. Surface is activated at temperature of 35-40 C for 10-15 min. EFFECT: higher efficiency.

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RU 2 075 541 C1

Authors

Denjushina G.A.

Ponomarenko A.G.

Kagan E.Sh.

Dates

1997-03-20—Published

1995-02-21—Filed

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