6533b862fe1ef96bd12c6da8

RESEARCH PRODUCT

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

Irene SabatiniLuigi CampanellaMarco FerrettiC. PoleseClodoaldo Roldán García

subject

Materials scienceChemistry(all)Enamel paintenamels; fundamental parameter; gilt silver; medieval processional cross; multilayered materials; x-ray fluorescenceMetallurgyGildingX-ray fluorescenceX-ray fluorescenceGeneral MedicineFundamental parameterEnamelsGilt silverMultilayered materialsvisual_artNon destructiveChemical Engineering(all)Forensic engineeringvisual_art.visual_art_mediumfundamental parametersMedieval processional cross

description

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.

10.1016/j.proche.2013.03.035http://dx.doi.org/10.1016/j.proche.2013.03.035