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Start Over Author "Clodoaldo Roldán" Journal procedia chemistry
2 results on '"Clodoaldo Roldán"'

2. Non-destructive Approach to Multilayer Objects: XRF Analysis of Gilt and Enamelled Metals of the Medieval Cross of Rosciolo

Author

Irene Sabatini, Luigi Campanella, Marco Ferretti, C. Polese, and Clodoaldo Roldán García

Subjects
Materials science, Chemistry(all), Enamel paint, enamels, fundamental parameter, gilt silver, medieval processional cross, multilayered materials, x-ray fluorescence, Metallurgy, Gilding, X-ray fluorescence, General Medicine, Fundamental parameter, Enamels, Gilt silver, Multilayered materials, visual_art, Non destructive, Chemical Engineering(all), Forensic engineering, visual_art.visual_art_medium, fundamental parameters, Medieval processional cross
Abstract

The penetration of X-rays is usually a limitation to the application of XRF analysis to multilayered materials, however it is possible, by software tools based on the fundamental parameters method, to overcome this problem and estimate thickness and composition of each layer. The cross of Rosciolo is a significant example of multilayer object: it is made of a wood core with attached gilt silver sheets and decorated with enamels. Measurements were carried out in situ and the PyMCA software was employed. The values of gilding thickness, Au/Hg ratios and Cu content in the silver sheets, and enamel's composition are discussed.

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