Corrosion investigation of fire-gilded bronze involving high surface resolution spectroscopic imaging
Fiche du document
2016
- handle: 10670/1.nhwhy4
- hal: hal-01494641
- doi: 10.1016/j.apsusc.2016.01.101
- OATAO: 16707
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apsusc.2016.01.101
info:eu-repo/semantics/OpenAccess
Mots-clés
Corrosion Fire gilded bronze Chemical imaging Synchrotron radiation Photoemission Artworks XPS DecuprificationSujets proches
Diseases--ImagingCiter ce document
Giulia Masi et al., « Corrosion investigation of fire-gilded bronze involving high surface resolution spectroscopic imaging », HAL-SHS : archéologie, ID : 10.1016/j.apsusc.2016.01.101
Métriques
Partage / Export
Résumé
Gilded bronzes are often affected by severe corrosion, due to defects in the Au layer and Au/Cu alloygalvanic coupling, stimulated by large cathodic area of the gilded layer. Galvanic corrosion, triggered by gilding defects, leads to products growth at the Au/bronze interface, inducing blistering or break-up of the Au layer. In this context, fire-gilded bronze replicas prepared by ancient methods (use of spreadableAu–Hg paste) was specifically characterised by compiling complementary spectroscopic and imaging information before/after accelerated ageing with synthetic rain. Fire-gilded bronze samples were chemically imaged in cross-section at nanometric scale (