IFKhAN-54, a New Inhibitor of Acid Corrosion of Steels

Corrosion and electrochemical behavior of low- and high-carbon steels (steel 20 and У7Ðn) in aqueous solutions of sulfuric acid and that of Armco iron in aqueous solutions of hydrochloric acid at 80 and 20°C were studied in the presence of a new effective inhibitor, IFKhAN-54, which is a technical...

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Bibliographic Details
Published in:Protection of metals 2001-03, Vol.37 (2), p.144-147
Main Authors: Kuznetsov, Yu I, Isaev, V A, Rylkina, M V, Garmanov, M E
Format: Article
Language:English
Subjects:
Aqueous solutions
Corrosion
Corrosion inhibitors
Corrosion prevention
Hydrochloric acid
Inhibition
Steels
Sulfuric acid
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Summary:Corrosion and electrochemical behavior of low- and high-carbon steels (steel 20 and У7Ðn) in aqueous solutions of sulfuric acid and that of Armco iron in aqueous solutions of hydrochloric acid at 80 and 20°C were studied in the presence of a new effective inhibitor, IFKhAN-54, which is a technical product of condensation of aldehydes with nitrogen-containing oligomers. IFKhAN-54 was found to retard anodic iron dissolution, functioning mainly as a blocking inhibitor in hydrochloric acid (for the acid composition studied). In sulfuric acid, its effectiveness is enhanced in the presence of chloride ions. New inhibitive formulations based on IFKhAN-54 suppress acid corrosion of steels very effectively, including corrosion in chloride-free sulfuric acid.[PUBLICATION ABSTRACT]
ISSN:2070-2051
0033-1732
2070-206X
1608-327X
DOI:10.1023/A:1010322021104