Hydroxamic acid corrosion inhibitor for steel in aqueous solution

Abdulmajed Alagta, Ilona Felhösi, Erika Kálmán

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

The selected dihydroxamic acid derivatives, namely oxalyl-dihydroxamic acid (C2) and pimeloyl-l,5-di-hydroxamic acid (C7) have been synthesized and evaluated as corrosion inhibitors for carbon steel in neutral aqueous solution by potentiodynamic polarization and ac impedance methods. C2 molecule acts as good inhibitor with inhibition efficiency value reached 91%; it is well adsorbed most likely throughout the two hydrophilic groups, and forms a protective film on the metal surface. C7 has moderate inhibition efficiency probably due to the presence of long single hydrocarbon chain in the molecule, negatively affect the adsorption process. Addition of Ni2+ to C7 significantly improve the inhibition efficiency, throughout the formation of a dense compact layer of complexes between Ni2+ and C7.

Original languageEnglish
Title of host publicationMaterials Science, Testing and Informatics III - Proceedings of the 5th Hungarian Conference on Materials Science, Testing and Informatics
Pages81-88
Number of pages8
Publication statusPublished - Dec 1 2007
Event5th Hungarian Conference on Materials Science, Testing and lnformatics - Balatonfured, Hungary
Duration: Oct 9 2005Oct 11 2005

Publication series

NameMaterials Science Forum
Volume537-538
ISSN (Print)0255-5476

Other

Other5th Hungarian Conference on Materials Science, Testing and lnformatics
CountryHungary
CityBalatonfured
Period10/9/0510/11/05

Keywords

  • Ac impedance
  • Adsorption
  • Corrosion inhibitors
  • Dihydroxamic acid

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Alagta, A., Felhösi, I., & Kálmán, E. (2007). Hydroxamic acid corrosion inhibitor for steel in aqueous solution. In Materials Science, Testing and Informatics III - Proceedings of the 5th Hungarian Conference on Materials Science, Testing and Informatics (pp. 81-88). (Materials Science Forum; Vol. 537-538).