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Analysis of the Quintilii’s Villa Bronzes by Spectroscopy Techniques


Affiliations
1 Physics Department, University of Calabria, Rende, 87036 Cosenza, Italy
2 DiBEST, University of Calabria, Rende, 87036 Cosenza, Italy
3 Archaeological Site of Villa dei Quintili, 00178 Rome, Italy
 

The aim of this work is the characterization, with different diagnostic tests, of three fragments of bronze artefacts recovered from the Villa of the Quintilii (located in the south of Rome). In particular, the sample alloys were investigated by different chemical and morphological analysis. Firstly, an analysis of the alloy, implemented through the electronic spectroscopy, was taken to discriminate the bronze morphology and its elemental composition. Subsequently, a surface analysis was realized by molecular spectroscopy to identify the alteration patinas on surfaces (such as bronze disease). Two diagnostic techniques are used for the alloy analysis: scanning electron microscopy (SEM) connected to the EDX spectroscopy (to study the morphology and alloy composition) and Auger electron spectroscopy (AES) (to identify the oxidation state of each element). Moreover, for the study of surface patinas, IR and Raman spectroscopies were implemented. All studies were performed on the "as received" samples, covered by a thin layer of excavated soil and on samples processed in an aqueous solution of sulphuric acid (10%), to remove patinas and alterations.
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  • Analysis of the Quintilii’s Villa Bronzes by Spectroscopy Techniques

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Authors

Fabio Stranges
Physics Department, University of Calabria, Rende, 87036 Cosenza, Italy
Mauro La Russa
DiBEST, University of Calabria, Rende, 87036 Cosenza, Italy
Antonino Oliva
Physics Department, University of Calabria, Rende, 87036 Cosenza, Italy
Giuliana Galli
Archaeological Site of Villa dei Quintili, 00178 Rome, Italy

Abstract


The aim of this work is the characterization, with different diagnostic tests, of three fragments of bronze artefacts recovered from the Villa of the Quintilii (located in the south of Rome). In particular, the sample alloys were investigated by different chemical and morphological analysis. Firstly, an analysis of the alloy, implemented through the electronic spectroscopy, was taken to discriminate the bronze morphology and its elemental composition. Subsequently, a surface analysis was realized by molecular spectroscopy to identify the alteration patinas on surfaces (such as bronze disease). Two diagnostic techniques are used for the alloy analysis: scanning electron microscopy (SEM) connected to the EDX spectroscopy (to study the morphology and alloy composition) and Auger electron spectroscopy (AES) (to identify the oxidation state of each element). Moreover, for the study of surface patinas, IR and Raman spectroscopies were implemented. All studies were performed on the "as received" samples, covered by a thin layer of excavated soil and on samples processed in an aqueous solution of sulphuric acid (10%), to remove patinas and alterations.