AFM study of steel corrosion in aqueous solutions in concrete

Authors

  • B. Díaz-Benito Universidad Carlos III de Madrid. Dpto de Ciencia e Ingeniería de Materiales. Leganés
  • F. Velasco Universidad Carlos III de Madrid. Dpto de Ciencia e Ingeniería de Materiales. Leganés
  • S. Guzmán Universidad Carlos III de Madrid. Dpto de Ciencia e Ingeniería de Materiales. Leganés
  • R. Calabrés Universidad Carlos III de Madrid. Dpto de Ciencia e Ingeniería de Materiales. Leganés

DOI:

https://doi.org/10.3989/mc.2010.59410

Keywords:

Steel, Corrosion, Atomic Force Microscopy (AFM)

Abstract


Early corrosion stages are studied in carbon steel by means of a solution simulating that contained in concrete pores. Non-carbonated solution contains 5% NaCl. The atomic force microscopy (AFM) technique is used to study material performance after different immersion times (up to 48 h). Obtained data are compared to electrochemical ones (corrosion potential and polarization resistance). Analysis of images and roughness evolution along time shows that steel initially tends to reach passivity, although the passive layer rapidly loses its protective character due to chloride attack.

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References

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Published

2011-03-31

How to Cite

Díaz-Benito, B., Velasco, F., Guzmán, S., & Calabrés, R. (2011). AFM study of steel corrosion in aqueous solutions in concrete. Materiales De Construcción, 61(301), 27–37. https://doi.org/10.3989/mc.2010.59410

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Research Articles

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