A study of the corrosion of carbon steel by alkaline chloride solutions containing, either or both hydrogen peroxide and sodium thiosulphate

Kouloumbi, N; Batis, G; Kotsakou, K

dc.contributor.author	Kouloumbi, N	en
dc.contributor.author	Batis, G	en
dc.contributor.author	Kotsakou, K	en
dc.date.accessioned	2014-03-01T01:11:38Z
dc.date.available	2014-03-01T01:11:38Z
dc.date.issued	1996	en
dc.identifier.issn	1356-0751	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11752
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-5744253302&partnerID=40&md5=45727dd4cb9a9ddd7629646c62994969	en
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33748969346&partnerID=40&md5=d0480d82993bb289c4da36b3797f88ac	en
dc.subject.classification	Chemistry, Applied	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.other	THIOSULFATE	en
dc.title	A study of the corrosion of carbon steel by alkaline chloride solutions containing, either or both hydrogen peroxide and sodium thiosulphate	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The aim of this experimental work was to compare the relative effects on the corrosion of carbon steel of Na2S2O3.5H(2)O, Na2S2O5, H2O2 and NaCl in caustic solutions. Bore steel specimens and specimens coated with two different cootings were examined in these solutions. The corrosivity was evaluated by carrying out corrosion potential, potentiodynamic polarization and mass loss measurements. The results indicate that Na2S2O3.5H(2)O ond Na2S2O5 have no significant effect on the corrosion rate of bore steel, but which increases fourfold when these sulphur compounds ore both present in the caustic solutions. H2O2 is a corrosion activator only in solutions of sulphur salts or in solutions which contain chloride ions. Thiosulphate ions, In the presence of chlorides, impair steel passivation especially at high concentrations of chloride. This combination is the most harmful. The coating systems provided protection in all cases. Both had a two component epoxy system finishing coat and a different primer. One, comprising a water-based primer with dispersed tonnin, gave higher protection than the other in which the primer was a two-compound acrylic system containing a chromate pigment.	en
heal.publisher	OIL COLOUR CHEM ASSN	en
heal.journalName	Surface Coatings International Part B: Coatings International	en
dc.identifier.isi	ISI:A1996TW50300002	en
dc.identifier.volume	79	en
dc.identifier.issue	1	en
dc.identifier.spage	21	en
dc.identifier.epage	26	en