Influence of copper, cadmium and tin additions in the galvanizing bath on the structure, thickness and cracking behaviour of the galvanized coatings

Katiforis, N; Papadimitriou, G

dc.contributor.author	Katiforis, N	en
dc.contributor.author	Papadimitriou, G	en
dc.date.accessioned	2014-03-01T01:12:01Z
dc.date.available	2014-03-01T01:12:01Z
dc.date.issued	1996	en
dc.identifier.issn	0257-8972	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11916
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0029755053&partnerID=40&md5=427ebc88b9829df197947751696bb54e	en
dc.subject	Coatings	en
dc.subject	Cracking behaviour	en
dc.subject	Hot-dip galvanizing	en
dc.subject	Structure	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Cadmium alloys	en
dc.subject.other	Composition effects	en
dc.subject.other	Copper alloys	en
dc.subject.other	Crack propagation	en
dc.subject.other	Galvanizing	en
dc.subject.other	Morphology	en
dc.subject.other	Optical microscopy	en
dc.subject.other	Phase transitions	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Structure (composition)	en
dc.subject.other	Tin alloys	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Energy dispersive spectroscopy microanalysis	en
dc.subject.other	Galvanized coatings	en
dc.subject.other	Galvanizing bath	en
dc.subject.other	Protective coatings	en
dc.title	Influence of copper, cadmium and tin additions in the galvanizing bath on the structure, thickness and cracking behaviour of the galvanized coatings	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The influence of copper, cadmium and tin additions in the galvanizing bath on the morphology and thickness of galvanized coatings has been studied using X-ray diffraction and optical and scanning electron microscopy associated with energy-dispersive spectroscopy microanalysis. Copper promotes the delta(1) phase and hinders the zeta phase growth. In the opposite, cadmium promotes the zeta and Gamma phase formation and hinders the growth of the delta(1) phase. No change in the morphology of galvanized coatings has been observed with the addition of tin. Mechanisms have been proposed in order to explain the effect of the above elements on the formation of intermetallics. The cracking of the coatings after tensile testing in the plastic region of the specimens has been examined. The delta(1) phase is responsible for the nucleation and propagation of transverse cracks parallel to the steel substrate. Cadmium hinders the nucleation and propagation of the transverse cracks during loading up to the yield point of the steel; however, the columnar growth of the zeta phase results in the complete flaking of the coating during loading up to the ultimate tensile strength of steel. The Gamma phase remains always adhered to the steel substrate.	en
heal.publisher	ELSEVIER SCIENCE SA LAUSANNE	en
heal.journalName	Surface and Coatings Technology	en
dc.identifier.isi	ISI:A1996TT02900024	en
dc.identifier.volume	78	en
dc.identifier.issue	1-3	en
dc.identifier.spage	185	en
dc.identifier.epage	195	en