Synergistic and biocidal effects of 1‐hydroxyethane ‐1, 1‐diphosphate, Zn 2+ and polycrylamide on the inhibition of corrosion of mild steel in neutral aqueous environment

Synergistic and biocidal effects of 1‐hydroxyethane ‐1, 1‐diphosphate, Zn 2+ and... The formulation consisting of 300ppm 1‐hydroxyethane‐1, 1‐diphosphonic acid (HEDP), 50ppm polyacrylamide (PAA) and 50 ppm Zn 2+ offered 99 per cent corrosion inhibition and 99 to 99.9 per cent biocidal inhibition to mild steel in neutral aqueous environment containing 60ppm Cl‐ , a situation commonly encountered in cooling water systems. The nature of the protective film formed on the metal surface was analysed using X‐ray diffraction, UV‐visible reflectance, FTIR and luminescence spectra. The film was found to be luminescent and to consist of Fe 2+ ‐HEDP complex, Fe 2+ ‐PAA complex and Zn(OH) 2 . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

Synergistic and biocidal effects of 1‐hydroxyethane ‐1, 1‐diphosphate, Zn 2+ and polycrylamide on the inhibition of corrosion of mild steel in neutral aqueous environment

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Publisher
Emerald Publishing
Copyright
Copyright © 1998 MCB UP Ltd. All rights reserved.
ISSN
0003-5599
DOI
10.1108/00035599810223805
Publisher site
See Article on Publisher Site

Abstract

The formulation consisting of 300ppm 1‐hydroxyethane‐1, 1‐diphosphonic acid (HEDP), 50ppm polyacrylamide (PAA) and 50 ppm Zn 2+ offered 99 per cent corrosion inhibition and 99 to 99.9 per cent biocidal inhibition to mild steel in neutral aqueous environment containing 60ppm Cl‐ , a situation commonly encountered in cooling water systems. The nature of the protective film formed on the metal surface was analysed using X‐ray diffraction, UV‐visible reflectance, FTIR and luminescence spectra. The film was found to be luminescent and to consist of Fe 2+ ‐HEDP complex, Fe 2+ ‐PAA complex and Zn(OH) 2 .

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Aug 1, 1998

Keywords: Corrosion inhibitors; Steel

References

  • Corrosive Science
    Favre, M.; Landolt, D.

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