Transparent varnishes on copper alloys dating from the 19th century: characterization and identification strategies
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2 septembre 2019
- handle: 10670/1.owdrbi
- isbn: 978-92-9012-458-0
- hal: hal-02382715
info:eu-repo/semantics/OpenAccess
Mots-clés
UV-induced fluorescence Confocal microscopy Spectroscopic ellipsometry Varnish Copper alloys Infrared spectroscopy Eddy current FT-IRSujets proches
Field guides Keys (Identification guides) Identification guides Papers 19th century Forensic identification Conservators Conservatorships--Law and legislation Surface coatingsCiter ce document
Julie Schröter et al., « Transparent varnishes on copper alloys dating from the 19th century: characterization and identification strategies », HAL-SHS : histoire de l'art, ID : 10670/1.owdrbi
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Résumé
Many varnished copper-based artefacts dating from the 19th century can be found in museum collections. Although conservators deal on a daily basis with these surface finishes, few studies on this topic have been conducted during the last few decades on European objects. A more thorough understanding of these historical coatings would be helpful to establish accurate diagnoses and to contextualise the results with respect to the historical written sources. This paper presents the first results of the LacCa (Lacquered Copper Alloys) project currently being undertaken by an international multidisciplinary team. LacCa aims to develop a methodology that conservators can apply to identify and preserve these coatings. To this end, both historical objects and ancient varnish recipes have been studied. In a first step, the identification and characterisation protocol was validated using mock-ups, the results of which are presented in this paper.