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1. Surface study of the corrosion of carbon steel in solutions of ammonium salts using Mössbauer spectrometry.

Author

Samide, A., Bibicu, I., Rogalski, M. S., and Preda, M.

Subjects
*LIGHT elements, *AMMONIUM salts, *SALT deposits, *CARBON, *SPECTRUM analysis, *STEEL
Abstract

The effect of the NO3- anion on the corrosion of carbon steel in a solution of 0.1M NH4Cl (pH 5.5) was studied by galvanostatic polarization and Mössbauer spectrometry. The anion has an inhibiting effect by decreasing the expansion rate of generalized corrosion of carbon steel in a solution of 0.1M NH4Cl. Mössbauer spectroscopy shows that a superficial compound is formed on the electrode surface as a result of corrosion, presenting no magnetic ordering. Its parameters show the initial stage of corrosion. We assume that at this stage the main corrosion product is a mixture of ferrihydrite Fe(III) and FeOOH (α and/or γ). [ABSTRACT FROM AUTHOR]

Published
2004
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