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HEDP‐Zn2+: a potential inhibitor system for mild steel in low chloride media

S. Rajendran (S. Rajendran is a Professor of Chemistry at the Corrosion Study Centre of the GTN Arts College (Autonomous), Dindigul, Tamil Nadu, India.)
B.V. Apparao (B.V. Apparao is a Professor of Chemistry at the Regional Engineering College, Warangal, India.)
N. Palaniswamy (N. Palaniswamy is a Scientist in the Corrosion Science and Engineering Division of the Central Electrochemical Research Institute, Karaikudi, Tamil Nadu, India.)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 1 April 2000

Abstract

The inhibition efficiency of the HEDP‐Zn2+ system, in a wider concentration range of Zn2+ and HEDP (10, 50, 100, 150, 200 and 300ppm), in controlling corrosion of mild steel immersed in low chloride medium (Cl = 60ppm) has been evaluated by weight‐loss study. Synergism parameters have been calculated between HEDP and Zn2+. The plot of C/θ vs. C gives a straight line. The HEDP‐Zn2+ system functions as a mixed inhibitor. The protective film has been analysed by UV‐visible reflectance spectra and X‐ray diffraction.

Keywords

Citation

Rajendran, S., Apparao, B.V. and Palaniswamy, N. (2000), "HEDP‐Zn2+: a potential inhibitor system for mild steel in low chloride media", Anti-Corrosion Methods and Materials, Vol. 47 No. 2, pp. 83-87. https://doi.org/10.1108/00035590010316430

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