Intergranular Failure of Roman Silver Artefacts
| Autor: | P. Bartuška, Pavel Lejček, Jaroslava Vaníčková, Jiří Děd |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Precipitation (chemistry) Mechanical Engineering Metallurgy Energy-dispersive X-ray spectroscopy chemistry.chemical_element Intergranular corrosion Condensed Matter Physics Copper Corrosion chemistry Mechanics of Materials Catastrophic failure General Materials Science Grain boundary Embrittlement |
| Zdroj: | Materials Science Forum. :213-216 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.567-568.213 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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