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Study of corrosion inhibition phenomena in acidic media by electrochemical and surface analysis techniques

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Abstract

The kinetics of iron dissolution in sulfuric acid solutions is investigated by polarization measurements in the presence of halide ions and/or organic additives. Both the inhibition action and additive interactions are investigated during polarization measurements as a function of inhibitor concentration. The Armco iron surface is studied by scanning electron microscopy, Fourier transform infrared reflection-absorption spectroscopy, and X-ray photoelectron spectroscopy techniques. Anodically pre-polarized and non-polarized specimens are investigated. The non-polarized specimens were immersed in the aggressive solution for different time periods. It is found that the inhibition efficiency of different aminophosphonic acids can be increased by halide ions. In the presence of aminophosphonic acids, the anomalous behavior of halide ions can be eliminated during anodic polarization.

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Authors and Affiliations

  1. Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences, H-1025 Budapest II, Pusztaszeri ut 59-67, P.O. Box 17, Post: H-1525, Budapest

    T. Horváth & E. Káimán

Authors
  1. T. Horváth
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  2. E. Káimán
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Dedicated to the ninetieth anniversary of Ya.M. Kolotyrkin’s birth.

This article was submitted by the authors in English.

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Horváth, T., Káimán, E. Study of corrosion inhibition phenomena in acidic media by electrochemical and surface analysis techniques. Russ J Electrochem 36, 1085–1091 (2000). https://doi.org/10.1007/BF02757527

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  • DOI: https://doi.org/10.1007/BF02757527

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