FIELD: chemistry.
SUBSTANCE: invention relates to anticorrosion protection agents, in particular to a composition for phosphating of metal surfaces, and can be used to protect metal products and structures from atmospheric corrosion both during operation and during storage and transportation. Phosphoric acid-based composition for phosphating of metal surfaces contains zinc oxide, sodium nitrate and anode corrosion inhibitor potassium pertechnetate, with the following ratio of components, g/l: phosphoric acid (d=1.7 g/ml) 241–300, zinc oxide 45–60, sodium nitrate 13–18, potassium pertechnetate not more than 3.0, water – the rest.
EFFECT: higher efficiency of anticorrosion protection by enhancing its inhibiting properties with possibility of use as an independent preservation composition.
1 cl, 1 dwg, 4 tbl, 3 ex
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| 0 |
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SU1562362A1 |
