Novel hybrid organo-silicate corrosion resistant coatings based on hyperbranched polymers

Roussi, E; Tsetsekou, A; Tsiourvas, D; Karantonis, A

dc.contributor.author	Roussi, E	en
dc.contributor.author	Tsetsekou, A	en
dc.contributor.author	Tsiourvas, D	en
dc.contributor.author	Karantonis, A	en
dc.date.accessioned	2014-03-01T01:36:30Z
dc.date.available	2014-03-01T01:36:30Z
dc.date.issued	2011	en
dc.identifier.issn	0257-8972	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21315
dc.subject	AA2024-T3 alloy	en
dc.subject	Aluminum alloy	en
dc.subject	Coatings	en
dc.subject	Corrosion	en
dc.subject	Dendritic polymers	en
dc.subject	Sol-gel	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	2-mercapto-benzimidazole	en
dc.subject.other	2-mercaptobenzothiazole	en
dc.subject.other	AA2024-T3	en
dc.subject.other	AA2024-T3 alloys	en
dc.subject.other	Chemical structure	en
dc.subject.other	Corrosion barriers	en
dc.subject.other	Corrosion-resistant coating	en
dc.subject.other	Cross linking agents	en
dc.subject.other	Dendritic polymers	en
dc.subject.other	Diethylenetriamine	en
dc.subject.other	Fourier transformed infrared spectroscopy	en
dc.subject.other	Hyperbranched	en
dc.subject.other	Hyperbranched polymers	en
dc.subject.other	In-situ formations	en
dc.subject.other	Methoxysilane	en
dc.subject.other	Organic corrosion inhibitors	en
dc.subject.other	Organic inhibitors	en
dc.subject.other	Organic molecules	en
dc.subject.other	Poly(ethyleneimine)	en
dc.subject.other	Potentiodynamic scans	en
dc.subject.other	Self-assembled NAnophase particles	en
dc.subject.other	Self-healing properties	en
dc.subject.other	Silica networks	en
dc.subject.other	Sol-gel coatings	en
dc.subject.other	Sol-gel technique	en
dc.subject.other	Solvent based	en
dc.subject.other	Tetraethoxysilanes	en
dc.subject.other	Aluminum	en
dc.subject.other	Aluminum alloys	en
dc.subject.other	Aluminum coatings	en
dc.subject.other	Corrosion protection	en
dc.subject.other	Corrosion resistance	en
dc.subject.other	Crosslinking	en
dc.subject.other	Dendrimers	en
dc.subject.other	Electrochemical corrosion	en
dc.subject.other	Electrochemical impedance spectroscopy	en
dc.subject.other	Ethylene	en
dc.subject.other	Gels	en
dc.subject.other	Infrared spectroscopy	en
dc.subject.other	Nitrogen compounds	en
dc.subject.other	Plastic coatings	en
dc.subject.other	Polymers	en
dc.subject.other	Protective coatings	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Silica	en
dc.subject.other	Silicates	en
dc.subject.other	Sol-gel process	en
dc.subject.other	Sol-gels	en
dc.subject.other	Sols	en
dc.subject.other	Spectroscopic analysis	en
dc.subject.other	Corrosion inhibitors	en
dc.title	Novel hybrid organo-silicate corrosion resistant coatings based on hyperbranched polymers	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.surfcoat.2010.11.037	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.surfcoat.2010.11.037	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Corrosion protective sol-gel coatings were developed on AA2024-T3 through an aqueous sot-gel process (Modified Self-Assembled Nanophase Particle method) which includes in-situ formation of a dense silica network from hydrolyzed 3-glycidoxy-propyltri-methoxysilane and tetraethoxysilane by proper cross-linking. In the present study, hyperbranched poly(ethylene imine) of two different molecular weights was investigated as a cross-linking agent since this polymer is able to solubilize non-water-soluble organic molecules. In this respect, two organic corrosion inhibitors (2-mercaptobenzothiazole and 2-mercaptobenzimidazole) were combined with poly(ethylene imine) to induce self healing properties. The as developed coatings were also compared with Sir containing coatings developed by a solvent based sol-gel technique. The potentiodynamic scan and the electrochemical impedance spectroscopy methods were employed to evaluate the corrosion protection performance, whereas the chemical structure, morphology and integrity of the coatings were evaluated by Fourier transformed infrared spectroscopy and scanning electron microscopy studies. Formulations that contain poly(ethylene imine) demonstrate better corrosion barrier properties compared to formulations cross-linked with the simple molecule of diethylenetriamine in all cases and especially when combined with the organic inhibitors. (C) 2010 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	Surface and Coatings Technology	en
dc.identifier.doi	10.1016/j.surfcoat.2010.11.037	en
dc.identifier.isi	ISI:000286866400016	en
dc.identifier.volume	205	en
dc.identifier.issue	10	en
dc.identifier.spage	3235	en
dc.identifier.epage	3244	en