Publication detail

INFLUENCE OF HUMIC ACID ON CORROSION OF LOW CARBON STEEL IN NEUTRAL AQUEOUS SOLUTION CONTAINING CHLORIDES

DOSKOČIL, L. ŠOMANOVÁ, P. BUCHTÍK, M. HORÁK, T. WASSERBAUER, J.

Original Title

INFLUENCE OF HUMIC ACID ON CORROSION OF LOW CARBON STEEL IN NEUTRAL AQUEOUS SOLUTION CONTAINING CHLORIDES

Type

conference paper

Language

English

Original Abstract

The effect of lignitic humic acid in 0.1 M NaCl at pH 7 on low carbon steel was investigated using potentiodynamic polarization and immersion test. The morphology and elemental composition of the corrosion products were characterized using scanning electron microscopy with energy dispersive spectroscopy. The results showed that humic acid accelerated the corrosion of low carbon steel in 0.1 M NaCl. The negative effect of humic acid was attributed to the complexation of the molecules with iron ions. After seven days, immersion tests revealed that steel in 0.1 M NaCl was covered with the discontinuous black corrosion products, whereas humic acid in 0,1 M NaCl induced the formation of a continuous layer of brown corrosion products with low adhesion to the surface. The elemental composition of the black and brown corrosion products corresponded to Fe3O4 and FeOOH, respectively.

Keywords

Humic acid; low carbon steel; corrosion; corrosion product

Authors

DOSKOČIL, L.; ŠOMANOVÁ, P.; BUCHTÍK, M.; HORÁK, T.; WASSERBAUER, J.

Released

18. 5. 2022

ISBN

9781713862307

Book

31st International Conference on Metallurgy and Materials, METAL 2022

Pages from

543

Pages to

548

Pages count

6

URL

https://www.scopus.com/record/display.uri?eid=2-s2.0-85144131169&origin=inward&txGid=051b71600445cf335f98687e7d104834

BibTex

@inproceedings{BUT182908,
  author="Leoš {Doskočil} and Pavlína {Šomanová} and Martin {Buchtík} and Tomáš {Horák} and Jaromír {Wasserbauer}",
  title="INFLUENCE OF HUMIC ACID ON CORROSION OF LOW CARBON STEEL IN NEUTRAL AQUEOUS SOLUTION CONTAINING CHLORIDES",
  booktitle="31st International Conference on Metallurgy and Materials, METAL 2022",
  year="2022",
  pages="543--548",
  doi="10.37904/metal.2022.4486",
  isbn="9781713862307",
  url="https://www.scopus.com/record/display.uri?eid=2-s2.0-85144131169&origin=inward&txGid=051b71600445cf335f98687e7d104834"
}