| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Robbiola, Luc
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2022Fire gilding investigation on early medieval copper-based jewellery by focused ion beam (FIB) on FEG-SEMcitations
- 2022Galvanic corrosion over World War II aircraft wrecks
- 2022Galvanic corrosion over World War II aircraft wrecks
- 2022Analysis of Chromate-based Primers for Protection of Aluminium Alloys on Historical Aircraftcitations
- 2020Technological characterisation of early Medieval gilded copper hollow pendants (gombiky), from Mikulčice (Moravia) and Prague Castle (Bohemia)citations
- 2019Early medieval "gombiky" from Mikulčice: archaeological context, function, occurence, typology, construction, and characterization of materials and manufacturing processes ; Les "gombiky" du haut Moyen Âge de Mikulčice : contexte archéologique, fonction, occurrence, typologie, construction et caractérisation des matériaux et des processus de fabrication.
- 2019Evaluation of the protectiveness of an organosilane coating on patinated Cu-Si-Mn bronze for contemporary artcitations
- 2017Microstructure and thermal analysis of Cu-Cu2O eutectic – Can we mimic archeological remains?
- 2016Efficienza inibitrice di basi di schiff come inibitori di corrosione del bronzo
- 2005Corrosion and protection of high leaded tin bronze covered with patina in NaHCO3 + Na2SO4 solution simulating acid rain in urban environment
Places of action
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article
Fire gilding investigation on early medieval copper-based jewellery by focused ion beam (FIB) on FEG-SEM
Abstract
The study of ancient gilding is often problematic, as the gilding layers are soft and prone to deformation during sample preparation. In this respect, focused ion beam (FIB) milling on a field emission gun scanning electron microscope (FEG-SEM) provides poorly invasive in situ sampling. The operating process is here detailed and applied on gilded medieval copper-based elite jewellery (10th century) from Prague Castle. Obtained cross-sections and slices of gilded samples were investigated up to nanometer scale without gilding layer deformation. By coupling structural observation with elemental X-ray analysis (EDS) and electron beam diffraction (EBSD), FIB FEG-SEM provided new data on the physical-chemical characteristics of the gilded layer. The gilding has a two-layer metallurgical structure containing a quaternary Au (Hg, Cu, Ag) alloy corresponding to the gold solid solution fcc phase, and a submicrometric inner sublayer formed by a Au-Cu phase, relative to the inter-diffusion of copper from the substrate during the fire gilding process. The applied temperature for gilding can be estimated at c. 400 • C. Sintering of the mercury-gold amalgam globules during the fire heating is highlighted. The precise characterisation of the gilding layers provided useful comparative parameters for identifying fire gilding skill levels and assessing the overall quality of the archaeological pieces.