Maria Jose de la Torre-López, Ana Dominguez-Vidal, Maria Jose Campos-Suñol, Ramon Rubio-Domene, Ulrich Schade and Maria Jose Ayora-Cañada Gold in the Alhambra: study of materials, technologies, and decay processes on decorative gilded plasterwork Journal of Raman Spectroscopy 45
The combination of elemental, microstructural, and molecular characterization allowed for the identification of ancient gilding technologies and the main decay processes. Two different types of gilding were identified: one, original, employing a thin gold leaf and redecorations with a laminated structure of gold over tin foil. Degradation of the organic materials employed as binders and tin oxidation were the main decay processes affecting the gildings.
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