1. New strategies for the conservation of paintings on metal
- Author
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Julie Gordon, Laura Normand, Anne Genachte-Le Bail, Sigrid Mirabaud, Marie-Anne Loeper-Attia, Remi Catillon, Anne-Laure Carré, Mandana Saheba, Anne-Marie Geffroy, Céline Paris, Ludovic Bellot-Gurlet, Solenn Reguer, De la Molécule aux Nanos-objets : Réactivité, Interactions et Spectroscopies (MONARIS), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Institut national du patrimoine (INP), Institut National d'Histoire de l'Art (INHA), INHA, Musée des arts et métiers (Paris), Conservatoire National des Arts et Métiers [CNAM] (CNAM), Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Auteur indépendant, Synchrotron SOLEIL and DIM MAP: Matériaux Anciens et Patrimoniaux (Région Ile de France), Claudia Chemello, Laura Brambilla, Edith Joseph, Bellot-Gurlet, Ludovic, HESAM Université (HESAM)-HESAM Université (HESAM), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Division Expériences - DIFFABS Synchrotron Soleil (Synchrotron Soleil), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Musée des Arts et Métiers (CNAM)
- Subjects
restoration ,[CHIM.ANAL] Chemical Sciences/Analytical chemistry ,Metal ,XRF ,Conservation ,[SHS.MUSEO]Humanities and Social Sciences/Cultural heritage and museology ,XANES ,X-ray absorption near-edge structure (XANES) ,Synchrotron ,Painting ,X-ray fluorescence spectroscopy ,paint ,[SHS.MUSEO] Humanities and Social Sciences/Cultural heritage and museology ,[CHIM.ANAL]Chemical Sciences/Analytical chemistry ,Raman spectroscopy ,Alteration ,Raman ,X-ray fluorescence spectroscopy (XRF) - Abstract
International audience; The conservation and restoration of painted metal objects presents a challenge due to their composite nature. Both the metal support and the paint layers can undergo independent and linked alterations, making it necessary to fully understand the processes of degradation before attempting to implement a treatment. This paper presents the first part of the CoPaiM project, detailing the selection of a corpus from the collections of the Musée des Arts et Métiers in Paris, France. A condition report on 23 painted metal objects was prepared including a description of the materials, their visible alterations and a first diagnosis of whether the degradation originated from deterioration of the paint or corrosion of the metal support. Samples of paint and corrosion products were collected from six objects in order to characterize the system by micro-analysis. A multi-technique analytical methodology was used to study the morphology, the elemental composition and distribution and the variety of phases present in the samples, thus allowing a complete characterization of the metal, the corrosion products and the components present in the paint layers. Aesthetic alteration of the paint was observed in cases where the degradation of the metal support had led to subsequent migration of the corrosion products into the paint layers, leaving a brown-orange stain. The paint layers were determined to have oxidized over time, which could affect their stability in the composite system. The next steps of this project are to summarize the analytical data into hypotheses for the degradation mechanisms of the paint-metal system.
- Published
- 2019