Corrosion protection of cold-rolled steel with alkyd paint coatings composited with submicron-structure types polypyrrole-modified nano-size alumina and carbon nanotubes

András Gergely, Z. Pászti, Orsolya Hakkel, Eszter Drotár, J. Mihály, E. Kálmán

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19 Citations (Scopus)

Abstract

This paper is focused on studying corrosion protection of cold-rolled steel with alkyd paint coatings comprising nano-size alumina and either polystyrene-sulphonate (PSS) modified or sulphonated multi-walled carbon nanotube (MWCNT) supported polypyrrole (PPy). Single layer coatings (in thickness of 40 ± 5 μm) comprising PPy deposited alumina and PSS modified MWCNT supported PPy afforded viable protection during the 1 M sodium chloride test. The coatings containing PSS modified and weakly sulphonated MWCNTs (at volume fractions of 9.9 × 10 -4 and 2.5 × 10 -4) with PPy volume fractions of 3.5 × 10 -3 and 2.5 × 10 -3 provided effective corrosion prevention during the 1 M sodium chloride and hydrochloric acid solution tests. While inhibitor particles were characterised by infrared spectroscopy, corrosion products formed at the paint-steel interface were studied by X-ray photoelectron spectroscopy. Apart from the electron microscopy observations, rheology study of three-dimensional structure of the inhibitor particles was performed in dispersions at similar compositions to those used for the paint formulations. Thus, protection mechanism relating to both types of immersion tests is discussed in terms of properties of the inhibitor particles and their microstructure in the coatings.

Original languageEnglish
Pages (from-to)1571-1582
Number of pages12
JournalMaterials Science and Engineering B
Volume177
Issue number18
DOIs
Publication statusPublished - Nov 1 2012

Fingerprint

Carbon Nanotubes
Aluminum Oxide
Steel
polypyrroles
Polypyrroles
paints
Corrosion protection
Paint
Carbon nanotubes
nanotubes
corrosion
Alumina
aluminum oxides
sulfonates
carbon nanotubes
steels
inhibitors
coatings
Coatings
Polystyrenes

Keywords

  • Corrosion protection
  • MWCNT
  • Organic coatings
  • Polypyrrole

ASJC Scopus subject areas

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

Cite this

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abstract = "This paper is focused on studying corrosion protection of cold-rolled steel with alkyd paint coatings comprising nano-size alumina and either polystyrene-sulphonate (PSS) modified or sulphonated multi-walled carbon nanotube (MWCNT) supported polypyrrole (PPy). Single layer coatings (in thickness of 40 ± 5 μm) comprising PPy deposited alumina and PSS modified MWCNT supported PPy afforded viable protection during the 1 M sodium chloride test. The coatings containing PSS modified and weakly sulphonated MWCNTs (at volume fractions of 9.9 × 10 -4 and 2.5 × 10 -4) with PPy volume fractions of 3.5 × 10 -3 and 2.5 × 10 -3 provided effective corrosion prevention during the 1 M sodium chloride and hydrochloric acid solution tests. While inhibitor particles were characterised by infrared spectroscopy, corrosion products formed at the paint-steel interface were studied by X-ray photoelectron spectroscopy. Apart from the electron microscopy observations, rheology study of three-dimensional structure of the inhibitor particles was performed in dispersions at similar compositions to those used for the paint formulations. Thus, protection mechanism relating to both types of immersion tests is discussed in terms of properties of the inhibitor particles and their microstructure in the coatings.",
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T1 - Corrosion protection of cold-rolled steel with alkyd paint coatings composited with submicron-structure types polypyrrole-modified nano-size alumina and carbon nanotubes

AU - Gergely, András

AU - Pászti, Z.

AU - Hakkel, Orsolya

AU - Drotár, Eszter

AU - Mihály, J.

AU - Kálmán, E.

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