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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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Josse, Claudie
Processes and Engineering in Mechanics and Materials
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024Catalytic atomic layer deposition of amorphous alumina–silica thin films on carbon microfiberscitations
- 2024Austenitic-to-austenitic-ferritic stainless steel transformation via PVD powder surface functionalization and spark plasma sinteringcitations
- 2023Corrosion behaviour of the microbially modified surface of 5083 aluminium alloycitations
- 2023Amorphous Alumina Thin Films Deposited on Carbon Microfibers As Interface Layer for Thermal Oxidation Barrierscitations
- 2022Fire gilding investigation on early medieval copper-based jewellery by focused ion beam (FIB) on FEG-SEMcitations
- 2022Relationship between both thickness and degree of crystallisation of BN interphases and the mechanical behaviour of SiC/SiC compositescitations
- 2022Relationship between both thickness and degree of crystallisation of BN interphases and the mechanical behaviour of SiC/SiC composites ; J Mater Scicitations
- 2019Evaluation of the protectiveness of an organosilane coating on patinated Cu-Si-Mn bronze for contemporary artcitations
- 2019Solidification sequence and four-phase eutectic in AlSi6Cu4Fe2 alloycitations
- 2019Influence of hydrogen on the propagation of intergranular corrosion defects in 2024 aluminium alloycitations
- 2019Growth of Spheroidal Graphite: Light Versus Scanning and Transmission Electron Microscopiescitations
- 2018Corrosion behaviour of AA 1370 strands for wires: Identification of the critical metallurgical parameterscitations
- 2017High strength-high conductivity carbon nanotube-copper wires with bimodal grain size distribution by spark plasma sintering and wire-drawingcitations
- 2017High strength-high conductivity carbon nanotube-copper wires with bimodal grain size distribution by spark plasma sintering and wire-drawingcitations
- 2016Study of the Eutectoid Transformation in Nodular Cast Irons in Relation to Solidification Microsegregationcitations
- 2015Chinese Script vs Plate-Like Precipitation of Beta-Al9Fe2Si2 Phase in an Al-6.5Si-1Fe Alloycitations
- 2015Chinese Script vs Plate-Like Precipitation of Beta-Al9Fe2Si2 Phase in an Al-6.5Si-1Fe Alloycitations
- 2011Influence of the microstructure and laser shock processing (LSP) on the corrosion behaviour of the AA2050-T8 aluminium alloycitations
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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.