An X-ray diffraction study of corrosion products from low carbon steel

Authors

  • A. L. Morales Instituto de Física. Grupo de Corrosión y Protección. Departamento de Ingeniería de Materiales. Universidad de Antioquia

DOI:

https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1092

Keywords:

Corrosion rate, X-ray diffraction, Steel, Mössbauer spectroscopy, Sulfate and chloride ions

Abstract


It was found in earlier work a decrease in the corrosion rate from low carbon steel when it was subjected to the action of a combined pollutant concentration (SO4-2 = 10-4 M + Cl- = 1.5 x 10-3 M). It was also found that large magnetite content of the rust was related to higher corrosion rates. In the present study corrosion products are further analyzed by means of X-ray diffraction to account for composition changes during the corrosion process. It is found that lepidocrocite and goethite are the dominant components for the short-term corrosion in all batches considered while for long-term corrosion lepidocrite and goethite dominates if the corrosion rate is low and magnetite dominates if the corrosion rate is high. The mechanism for decreasing the corrosion rate is related to the inhibition of magnetite production at this particular concentration.

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Published

2003-12-17

How to Cite

Morales, A. L. (2003). An X-ray diffraction study of corrosion products from low carbon steel. Revista De Metalurgia, 39(Extra), 28–31. https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1092

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