In this study, an innovative portable macro X-Ray Fluorescence (MA-XRF) scanner prototype has been employed in order to gain information on composition and distribution of corrosion products artificially grown on Cu-based coupons. First results have shown the importance of using artificially corroded reference samples before any assessment on archaeological artefacts. Moreover, the prototype used demonstrated to be a powerful tool for understanding complex corrosion processes which might occur on Cu-based alloys. The scanner was able to detect light elements as S and Cl, essential for studying the distribution of specific corrosion compounds. Using imaging techniques, it was possible to observe a gradient in Cu elemental maps intensity caused by the overlapping of a thicker corrosion product layer.
MA-XRF measurement for corrosion assessment on bronze artefacts / BARCELLOS LINS, SERGIO AUGUSTO; Di Francia, Elisabetta; Grassini, Sabrina; Gigante, Giovanni Ettore; Ridolfi, Stefano. - (2019). (Intervento presentato al convegno IMEKO TC-4 International Conference on Metrology for Archaeology and Cultural Heritage tenutosi a Florence, Italy).
MA-XRF measurement for corrosion assessment on bronze artefacts
Sergio Augusto Barcellos Lins
;Giovanni Ettore Gigante;Stefano Ridolfi
2019
Abstract
In this study, an innovative portable macro X-Ray Fluorescence (MA-XRF) scanner prototype has been employed in order to gain information on composition and distribution of corrosion products artificially grown on Cu-based coupons. First results have shown the importance of using artificially corroded reference samples before any assessment on archaeological artefacts. Moreover, the prototype used demonstrated to be a powerful tool for understanding complex corrosion processes which might occur on Cu-based alloys. The scanner was able to detect light elements as S and Cl, essential for studying the distribution of specific corrosion compounds. Using imaging techniques, it was possible to observe a gradient in Cu elemental maps intensity caused by the overlapping of a thicker corrosion product layer.File | Dimensione | Formato | |
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