Paper Title:
Intergranular Failure of Roman Silver Artefacts
  Abstract

Silver objects obtained from archaeological excavations often exhibit an extended embrittlement. The causes of this embrittlement were studied on silver artefacts buried for more than one thousand years in the soil using light and electron microscopy techniques and EDX microanalysis. Our investigation revealed presence of chlorine, sulphur and oxygen along the grain boundaries suggesting that most likely, the catastrophic failure of the grave objects made of Ag–Cu alloys is caused by an intercrystalline corrosion attack. The role of possible grain boundary segregation and/or precipitation of copper as a path of easy corrosion is discussed.

  Info
Periodical
Materials Science Forum (Volumes 567-568)
Edited by
Pavel Šandera
Pages
213-216
DOI
10.4028/www.scientific.net/MSF.567-568.213
Citation
J. Vaníčková, J. Děd, P. Bartuška, P. Lejček, "Intergranular Failure of Roman Silver Artefacts", Materials Science Forum, Vols. 567-568, pp. 213-216, 2008
Online since
December 2007
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Price
$32.00
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