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

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.

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