Optimally Balanced Active-Passive Corrosion Protection by Zinc-Rich Paint Coatings Featuring Proper Hybrid Formulation with Polypyrrole Modified Carbon Nanotubes

András Gergely; Tamas I. Török

doi:10.4028/www.scientific.net/MSF.752.275

Paper Titles

The Effect of Technological Parameters on the Quality of UHMWPE Products
p.233

Effect of Crystallinity on PLA’s Microbiological Behaviour
p.241

Tribological Testing Results Comparison by Microscope Techniques
p.248

The Effect of Aluminium and Nickel on some Spectral Lines of Alkaline-Earth Metals in the Course of ICP-AES Analysis
p.259

Modelling of Ion Distribution in Single, Binary and Ternary Ion Exchanged Zeolite Used for Biomedical Applications
p.268

Optimally Balanced Active-Passive Corrosion Protection by Zinc-Rich Paint Coatings Featuring Proper Hybrid Formulation with Polypyrrole Modified Carbon Nanotubes
p.275

Laboratory Preparation and Characterization of Electroless Nickel Coated Powders of Industrially Produced Aluminium and Iron(III) Oxides
p.284

The Effect of Micro-Impulse Current on the Morphology of Tin Electrodeposited from Chloride Solutions
p.294

Scanning Transmission Electron Microscopy Analysis of Diesel Soot Particles for Source Attribution
p.304

HomeMaterials Science ForumMaterials Science Forum Vol. 752Optimally Balanced Active-Passive Corrosion...

Optimally Balanced Active-Passive Corrosion Protection by Zinc-Rich Paint Coatings Featuring Proper Hybrid Formulation with Polypyrrole Modified Carbon Nanotubes

Abstract:

Fine balance between active galvanic and passive barrier corrosion protection by zinc-rich hybrid paints is explored depending on the absolute and relative amounts of the electrically semi-conducting particles, viz. polypyrrole (PPy) modified alumina hydrate and multi-walled carbon nanotubes (MWCNTs) and the zinc pigments. The former was varied between 3.21 and 1.75 wt.%, the latter was altered from 70 to 80 wt.% in the primers. The coating with less zinc indicated firm and stable barrier nature in a 254 h immersion test whereas the primer with greater zinc content afforded superior galvanic corrosion prevention in salt-mist test over 142 days. Different nature of the coatings are expounded on the basis of structure and 3D arrangement of the nano-size inhibitor particles in the epoxy vehicle besides interpreted considering varied grain contents caused changing electrical percolation and electrolytic conductivity of the primers.

You might also be interested in these eBooks

Materials Science at University of Miskolc

View Preview

Info:

Periodical:

Materials Science Forum (Volume 752)

Pages:

275-283

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.752.275

Citation:

Cite this paper

Online since:

March 2013

Authors:

András Gergely, Tamas I. Török

Keywords:

Low Carbon Steel, Polypyrrole-Modified Carbon Nanotubes, Zinc-Rich Hybrid Paints

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] R.N. Jagtap, R. Nambiar, S.Z. Hassan, V.C. Malshe, Predictive power for life and residual life of the zinc rich primer coatings with electrical measurement, Prog. Org. Coat. 58 (2007) 253–258.

DOI: 10.1016/j.porgcoat.2006.08.015

Google Scholar

[2] D. Battocchi, A.M. Simoes, D.E. Tallman, G.P. Bierwagen, Electrochemical behaviour of a Mg-rich primer in the protection of Al alloys, Corros. Sci. 48 (2006) 1292–1306.

DOI: 10.1016/j.corsci.2005.04.008

Google Scholar

[3] E. Akbarinezhad, M. Ebrahimi, F. Sharif, M.M. Attar, H.R. Faridi, Synthesis and evaluating corrosion protection effects of emeraldine base PAni/clay nanocomposite as a barrier pigment in zinc-rich ethyl silicate primer, Prog. Org. Coat. 70 (2011).

DOI: 10.1016/j.porgcoat.2010.09.016

Google Scholar

[4] H. Marchebois, S. Touzain, S. Joiret, J. Bernard, C. Savall, Zinc-rich powder coatings corrosion in sea water: influence of conductive pigments, Prog. Org. Coat. 45 (2002) 415–421.

DOI: 10.1016/s0300-9440(02)00145-5

Google Scholar

[5] A. Meroufel, S. Touzain, EIS characterisation of new zinc-rich powder coatings, Prog. Org. Coat. 59 (2007) 197–205.

DOI: 10.1016/j.porgcoat.2006.09.005

Google Scholar

[6] O. Øystein Knudsen, U. Steinsmo, M. Bjordal, Zinc-rich primers—Test performance and electrochemical properties, Prog. Org. Coat. 54 (2005) 224–229.

DOI: 10.1016/j.porgcoat.2005.06.009

Google Scholar

[7] A. Gergely, Z. Pászti, O. Hakkel, J. Mihály, E. Kálmán, Corrosion protection of cold-rolled steel with alkyd paint coatings composited with various microstructure arranged polypyrrole-modified nano-size alumina and carbon nanotubes, Mater. Sci. Engin. B, http: /dx. doi. org/10. 1016/j. mseb. 2012. 03. 049.

DOI: 10.1016/j.mseb.2012.03.049

Google Scholar

[8] A. Gergely, É. Pfeifer, I. Bertóti, T. Török, E. Kálmán, Corrosion protection of cold-rolled steel by zinc-rich epoxy coatings loaded with nano-size alumina supported polypyrrole, Corros. Sci. 53 (2011) 3486–3499.

DOI: 10.1016/j.corsci.2011.06.014

Google Scholar

[9] A.O. Patil, A.J. Heeger, F. Wudl, Optical Properties of Conducting Polymers, Chem. Rev. 88 (1988) 183–200.

DOI: 10.1021/cr00083a009

Google Scholar

[10] G. Jürmann, K. Tammeveski, Electroreduction of oxygen on multi-walled carbon nanotubes modified highly oriented pyrolytic graphite electrodes in alkaline solution, J. Electroanal. Chem. 597 (2006) 119–126.

DOI: 10.1016/j.jelechem.2006.09.002

Google Scholar

[11] A. Gergely, Z. Pászti, I. Bertóti, T. Török, J. Mihály, E. Kálmán, 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 behaviour of the hybrid paint coatings, Mater. Corros. 63 (2012).

DOI: 10.1002/maco.201206707

Google Scholar