Corrosion of ancient silver alloys

Vassiliou, P; Novakovic, J; Ingo, GM; De Caro, T

dc.contributor.author	Vassiliou, P	en
dc.contributor.author	Novakovic, J	en
dc.contributor.author	Ingo, GM	en
dc.contributor.author	De Caro, T	en
dc.date.accessioned	2014-03-01T02:51:35Z
dc.date.available	2014-03-01T02:51:35Z
dc.date.issued	2008	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35573
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84864964434&partnerID=40&md5=9ac7c3b48e9f081bbb8ab714eba99a63	en
dc.subject	Ancient silver	en
dc.subject	Artifacts	en
dc.subject	Corrosion	en
dc.subject	Microstructure characterization	en
dc.subject.other	Ancient silver	en
dc.subject.other	Artifacts	en
dc.subject.other	Au-based alloy	en
dc.subject.other	Chemical compositions	en
dc.subject.other	Complex manufacturing	en
dc.subject.other	Corrosion attack	en
dc.subject.other	Glancing angle	en
dc.subject.other	Metallurgical stability	en
dc.subject.other	Microstructure characterization	en
dc.subject.other	Silver metal	en
dc.subject.other	Soil corrosion	en
dc.subject.other	Alloys	en
dc.subject.other	Chemical properties	en
dc.subject.other	Chemical stability	en
dc.subject.other	Corrosion	en
dc.subject.other	Corrosion prevention	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Metallurgy	en
dc.subject.other	Optical microscopy	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Silver	en
dc.subject.other	Surface analysis	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	Silver alloys	en
dc.title	Corrosion of ancient silver alloys	en
heal.type	conferenceItem	en
heal.publicationDate	2008	en
heal.abstract	Precious metal artefacts are characterized by a wide compositional nature and have been produced via different complex manufacturing techniques that have greatly influenced their chemical and metallurgical stability. Furthermore, the Ag or Au based alloys can be characterized by different amount of impurities coming from the extractive processes, which can influence their long-term mechanical and chemical properties. In this work, we try to specify the types of corrosion attack on the silver metal alloys surface in soil. Silver based alloys with chemical composition and metallurgical features similar to those of ancient alloys have been prepared in the laboratory. Coin-like coupons were artificially preaged and then submitted to soil corrosion conditions to simulate the corrosion patina of real artefacts before excavation. An extensive study of the produced patina layers was performed by Glancing Angle X-ray Diffractometry (GAXRD), Scanning Electron Microscopy (SEM) and EDS surface analysis as well as optical microscopy. The silver coupon examination shows the same type of attack as the one reported on original artefacts. © 2009 by NACE International.	en
heal.journalName	17th International Corrosion Congress 2008: Corrosion Control in the Service of Society	en
dc.identifier.volume	2	en
dc.identifier.spage	1066	en
dc.identifier.epage	1077	en