Novel zinc-rich epoxy paint coatings with hydrated alumina and carbon nanotubes supported polypyrrole for corrosion protection of low carbon steel: Part II: Corrosion prevention behavior of the hybrid paint coatings

A. Gergely, Z. Pászti, I. Bertóti, T. Török, J. Mihály, E. Kálmán

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Utilization of various types of multi-walled carbon nanotubes (MWCNTs) in zinc-rich paints (ZRPs) is presented addressing percolation and porosity related phenomena of traditional ZRPs. Hybrid paint coatings were formulated with 3.21 wt% polypyrrole (PPy) deposited alumina-MWCNT inhibitor particles (PDAMIPs) and 70 wt% zinc contents. Corrosion protection behavior of the hybrid coatings was investigated by electrochemical impedance spectroscopy (EIS), glow-discharge optical emission spectroscopy (GD OES), X-ray photoelectron spectroscopy (XPS), and FT-Raman spectroscopy. Immersion and salt-spray chamber tests gave evidence of improved galvanic protection and barrier nature of the hybrid coatings over the conventional ZRPs, whereas inhibited zinc corrosion and ignorable steel corrosion took place besides lower degradation of the binder. Zinc-rich hybrid paints with either high relative amount of polyelectrolyte-modified or low proportion of functionalized MWCNTs afforded enhanced corrosion prevention. This result is partly attributed to the nanotube volume fractions around the threshold of infinite cluster formation contributing to electrical percolation and galvanic action of the hybrids. Experimental results are discussed in a broader context on the basis of structure related findings of the PDAMIPs (described in Part I) and in the light of recent literature data. From the newly developed inhibitor particles, some of them are respected as worthy additives for application in hybrid coatings featuring high performance corrosion prevention functionality.

Original languageEnglish
Pages (from-to)1091-1103
Number of pages13
JournalMaterials and Corrosion
Volume64
Issue number12
DOIs
Publication statusPublished - Dec 2013

Fingerprint

Corrosion prevention
Aluminum Hydroxide
Hydrated alumina
Carbon Nanotubes
Polypyrroles
Low carbon steel
Corrosion protection
Paint
aluminum oxide
Zinc
corrosion
coating
Carbon nanotubes
steel
zinc
Coatings
carbon
inhibitor
Aluminum Oxide
Alumina

Keywords

  • cathodic protection
  • EIS
  • FT-Raman
  • GD OES
  • XPS
  • Zinc-rich hybrid paint coatings

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Environmental Chemistry

Cite this

@article{09f1595a6b9542ce9ff726af401b7da4,
title = "Novel zinc-rich epoxy paint coatings with hydrated alumina and carbon nanotubes supported polypyrrole for corrosion protection of low carbon steel: Part II: Corrosion prevention behavior of the hybrid paint coatings",
abstract = "Utilization of various types of multi-walled carbon nanotubes (MWCNTs) in zinc-rich paints (ZRPs) is presented addressing percolation and porosity related phenomena of traditional ZRPs. Hybrid paint coatings were formulated with 3.21 wt{\%} polypyrrole (PPy) deposited alumina-MWCNT inhibitor particles (PDAMIPs) and 70 wt{\%} zinc contents. Corrosion protection behavior of the hybrid coatings was investigated by electrochemical impedance spectroscopy (EIS), glow-discharge optical emission spectroscopy (GD OES), X-ray photoelectron spectroscopy (XPS), and FT-Raman spectroscopy. Immersion and salt-spray chamber tests gave evidence of improved galvanic protection and barrier nature of the hybrid coatings over the conventional ZRPs, whereas inhibited zinc corrosion and ignorable steel corrosion took place besides lower degradation of the binder. Zinc-rich hybrid paints with either high relative amount of polyelectrolyte-modified or low proportion of functionalized MWCNTs afforded enhanced corrosion prevention. This result is partly attributed to the nanotube volume fractions around the threshold of infinite cluster formation contributing to electrical percolation and galvanic action of the hybrids. Experimental results are discussed in a broader context on the basis of structure related findings of the PDAMIPs (described in Part I) and in the light of recent literature data. From the newly developed inhibitor particles, some of them are respected as worthy additives for application in hybrid coatings featuring high performance corrosion prevention functionality.",
keywords = "cathodic protection, EIS, FT-Raman, GD OES, XPS, Zinc-rich hybrid paint coatings",
author = "A. Gergely and Z. P{\'a}szti and I. Bert{\'o}ti and T. T{\"o}r{\"o}k and J. Mih{\'a}ly and E. K{\'a}lm{\'a}n",
year = "2013",
month = "12",
doi = "10.1002/maco.201206707",
language = "English",
volume = "64",
pages = "1091--1103",
journal = "Materials and Corrosion - Werkstoffe und Korrosion",
issn = "0947-5117",
publisher = "John Wiley and Sons Ltd",
number = "12",

}

TY - JOUR

T1 - Novel zinc-rich epoxy paint coatings with hydrated alumina and carbon nanotubes supported polypyrrole for corrosion protection of low carbon steel

T2 - Part II: Corrosion prevention behavior of the hybrid paint coatings

AU - Gergely, A.

AU - Pászti, Z.

AU - Bertóti, I.

AU - Török, T.

AU - Mihály, J.

AU - Kálmán, E.

PY - 2013/12

Y1 - 2013/12

N2 - Utilization of various types of multi-walled carbon nanotubes (MWCNTs) in zinc-rich paints (ZRPs) is presented addressing percolation and porosity related phenomena of traditional ZRPs. Hybrid paint coatings were formulated with 3.21 wt% polypyrrole (PPy) deposited alumina-MWCNT inhibitor particles (PDAMIPs) and 70 wt% zinc contents. Corrosion protection behavior of the hybrid coatings was investigated by electrochemical impedance spectroscopy (EIS), glow-discharge optical emission spectroscopy (GD OES), X-ray photoelectron spectroscopy (XPS), and FT-Raman spectroscopy. Immersion and salt-spray chamber tests gave evidence of improved galvanic protection and barrier nature of the hybrid coatings over the conventional ZRPs, whereas inhibited zinc corrosion and ignorable steel corrosion took place besides lower degradation of the binder. Zinc-rich hybrid paints with either high relative amount of polyelectrolyte-modified or low proportion of functionalized MWCNTs afforded enhanced corrosion prevention. This result is partly attributed to the nanotube volume fractions around the threshold of infinite cluster formation contributing to electrical percolation and galvanic action of the hybrids. Experimental results are discussed in a broader context on the basis of structure related findings of the PDAMIPs (described in Part I) and in the light of recent literature data. From the newly developed inhibitor particles, some of them are respected as worthy additives for application in hybrid coatings featuring high performance corrosion prevention functionality.

AB - Utilization of various types of multi-walled carbon nanotubes (MWCNTs) in zinc-rich paints (ZRPs) is presented addressing percolation and porosity related phenomena of traditional ZRPs. Hybrid paint coatings were formulated with 3.21 wt% polypyrrole (PPy) deposited alumina-MWCNT inhibitor particles (PDAMIPs) and 70 wt% zinc contents. Corrosion protection behavior of the hybrid coatings was investigated by electrochemical impedance spectroscopy (EIS), glow-discharge optical emission spectroscopy (GD OES), X-ray photoelectron spectroscopy (XPS), and FT-Raman spectroscopy. Immersion and salt-spray chamber tests gave evidence of improved galvanic protection and barrier nature of the hybrid coatings over the conventional ZRPs, whereas inhibited zinc corrosion and ignorable steel corrosion took place besides lower degradation of the binder. Zinc-rich hybrid paints with either high relative amount of polyelectrolyte-modified or low proportion of functionalized MWCNTs afforded enhanced corrosion prevention. This result is partly attributed to the nanotube volume fractions around the threshold of infinite cluster formation contributing to electrical percolation and galvanic action of the hybrids. Experimental results are discussed in a broader context on the basis of structure related findings of the PDAMIPs (described in Part I) and in the light of recent literature data. From the newly developed inhibitor particles, some of them are respected as worthy additives for application in hybrid coatings featuring high performance corrosion prevention functionality.

KW - cathodic protection

KW - EIS

KW - FT-Raman

KW - GD OES

KW - XPS

KW - Zinc-rich hybrid paint coatings

UR - http://www.scopus.com/inward/record.url?scp=84889860634&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84889860634&partnerID=8YFLogxK

U2 - 10.1002/maco.201206707

DO - 10.1002/maco.201206707

M3 - Article

AN - SCOPUS:84889860634

VL - 64

SP - 1091

EP - 1103

JO - Materials and Corrosion - Werkstoffe und Korrosion

JF - Materials and Corrosion - Werkstoffe und Korrosion

SN - 0947-5117

IS - 12

ER -