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Influence of iron microstructure on the performance of polyacrylic acid as corrosion inhibitor in sulfuric acid solution

  • S. A. Umoren*
  • , Y. Li
  • , F. H. Wang
  • *Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

The corrosion inhibition behavior of bulk nanocrystalline ingot iron (BNII) fabricated from coarse polycrystalline ingot iron (CPII) by severe rolling technique by polyacrylic acid (PAA) was studied in 0.1M H2SO4 using electrochemical impedance spectroscopy and potentiodynamic polarization techniques. The results indicated that PAA inhibited the acid induced corrosion of both iron specimens, with greater effect noted for BNII. The corrosion inhibiting effect was influenced by the microstructure of the iron samples. Synergistic inhibition effect was observed on addition of iodide ions to PAA in case of CPII while for BNII inhibition efficiency marginally increased.

Original languageEnglish
Pages (from-to)1778-1785
Number of pages8
JournalCorrosion Science
Volume53
Issue number5
DOIs
StatePublished - May 2011
Externally publishedYes

Bibliographical note

Funding Information:
S.A Umoren is grateful to the Chinese Academy of Sciences (CAS) and Academy of Sciences for the Developing World (TWAS) for the CAS-TWAS Postdoctoral Fellowship.

Keywords

  • A. Iron
  • A. Polyacrylic acid
  • C. Corrosion inhibition
  • C. Microstructures
  • C. Nanocrystallization

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science

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