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2 151 822

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C1

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IPC

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Application

98114687/02, 1998-07-21

(24)

Start date

1998-07-21

(22)

Actual filing date

1998-07-21

(45)

Published

2000-06-27

(72)

Inventor

Paderova L.V.Paderov A.N.Zaks E.V.Khabibulin N.R.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Grazhdanskoj Aviatsii"

SOLUTION FOR CLEANING COMPONENTS OF TITANIUM ALLOYS FROM HIGH-TEMPERATURE DEPOSITS Russian patent published in 2000 - IPC

Abstract RU 2151822 C1

FIELD: chemical cleaning of metallic surfaces, more particularly gas turbine engines. SUBSTANCE: in order to clean surfaces of components made of titanium alloys, use is made of aqueous solution containing 180-200.0 g/l of sulfuric acid, 20.0-70.0 g/l of ammonium persulfate and 2•10-5-8•10-5 g/l of tellurium dioxide. The claimed solution makes it possible to clean completely surfaces of components at 40-50 C for 10-15 min. EFFECT: improved properties of the solution. 1 ex, 1 tbl

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RU 2 151 822 C1

Authors

Paderova L.V.

Paderov A.N.

Zaks E.V.

Khabibulin N.R.

Dates

2000-06-27—Published

1998-07-21—Filed

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