Corrosion of ancient silver alloys (Contributo in atti di convegno)

Type
Label
  • Corrosion of ancient silver alloys (Contributo in atti di convegno) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • P. Vassiliou, J. Novakovic, G.M. Ingo, T. De Caro (2009)
    Corrosion of ancient silver alloys
    in 17th International Corrosion Congress 2008: Corrosion Control in the Service of Society, Las Vegas, NV; United States, 6 - 10 October 2008
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • P. Vassiliou, J. Novakovic, G.M. Ingo, T. De Caro (literal)
Pagina inizio
  • 1066 (literal)
Pagina fine
  • 1077 (literal)
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  • Proceedings of the 17th International Corrosion Congress 2008: Corrosion Control in the Service of Society Volume 2 (2008) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
  • 17th International Corrosion Congress 2008: Corrosion Control in the Service of Society Volume 2 (2008) (literal)
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  • 12 (literal)
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  • P. Vassiliou [1], J. Novakovic [1], G.M. Ingo [2], T. De Caro [2] [1] School of Chemical Engineering, National Technical University of Athens, 9, Iroon Polytechniou Str., Zografou 157 80, Athens, Greece [2] Istituto per lo Studio dei materiali nanostrutturati-CNR, Area della Ricerca di Roma 1, via Salaria Km 29.3, 00015 Monterotondo, Rome, Italy. (literal)
Titolo
  • Corrosion of ancient silver alloys (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-1-61567-425-1 (literal)
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  • Vari (literal)
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  • Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 (literal)
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. (literal)
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