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2 240 378

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IPC

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Application

2002121550/02, 2002-08-05

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Start date

2002-08-05

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Actual filing date

2002-08-05

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Published

2004-11-20

(72)

Inventor

Varentsova N.V.Chumaevskij V.A.Bonokina M.N.Ibragimov R.R.Zagidullina G.I.Nurieva N.N.Kozyrenko N.N.Vekshin V.V.Gajnutdinova A.Ja.

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo

PHOSPHATE COATING MANUFACTURE METHOD Russian patent published in 2004 - IPC

Abstract RU 2240378 C2

FIELD: corrosion protection.

SUBSTANCE: metal surface is treated with aqueous solution containing zinc, nitrate, nickel, and chlorate ions and, when fine-crystalline corrosion-resistant phosphate coating is to obtain at phosphatation temperature 30-45^оС within a period of time 2 to 10 min, aqueous solution additionally contains calcium ions, concentrations of ions being the following, g/L: Zn²⁺ 1.527-3.225, P₂O₅ 4.347-8.385, NO-3

0.822-1.935, Ni²⁺ 0.023-0.086, ClO-3

0.587-1.505, Ca²⁺ 0.06-0.157. Method is suitable in mechanical engineering, instrumentation engineering, and can also be applied when performing phosphatation of passenger compartments and bodies of cars and trucks.

EFFECT: reduced phosphatation temperature and time, lowered surface density of coating and consumption of phosphate concentrate, and avoided use of correcting solution.

3 ex

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RU 2 240 378 C2

Authors

Varentsova N.V.

Chumaevskij V.A.

Bonokina M.N.

Ibragimov R.R.

Zagidullina G.I.

Nurieva N.N.

Kozyrenko N.N.

Vekshin V.V.

Gajnutdinova A.Ja.

Dates

2004-11-20—Published

2002-08-05—Filed