MA-XRF measurement for corrosion assessment on bronze artefacts

Lins, S.A.B., Di Francia, E., Grassini, S., Gigante, G.E., Ridolfi, S.

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 Cubased 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.

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IMEKO-TC4-METROARCHAEO-2019-105.pdf

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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