Julie GORDON
Ligne DIFFABS, Synchrotron SOLEIL, Gif sur Yvette et Laboratoire MONARIS Sorbonne Université CNRS
This work addresses the questions surrounding the conservation of painted metal objects of technical heritage currently stored in indoor museum collections. These objects present a challenge for conservation due to their composite nature, as well as their various possible states of alteration depending on the environmental conditions experienced before entering the controlled environment of a museum facility. The first research axe of this thesis consists of the study of a corpus of historic painted metal objects dating from the 19th - early 20th century. Micro-samples were characterised using complementary and multi-scale analytical techniques to identify their original composition and state of alteration. The second research axe investigates the effect of two promising conservation treatments applied to model painted metal coupons: a corrosion inhibitor and a resin-wax mixture. Two different artificial aging conditions (relative humidity and light) were used to age the treated model coupons, and their evolution was monitored using several analytical techniques to study the visual, molecular, and structural characteristics of the system. The results obtained provide original information on the historical preparation techniques of painted metal objects, document the characteristic alteration phenomena, and present an initial experimental evaluation of the effectiveness of two conservation treatments that meet the requirements for use on historic painted metal objects.
Lien de connexion video : https://us02web.zoom.us/j/85717350192?pwd=8iSJzwtfTLKCNwuy2pOJwq1FmCwBPa.1
Les membres du jury sont :
Katrien Keune Professor, University of Amsterdam & Rijksmuseum Rapportrice Austin Nevin Head of conservation, The Courtauld Institute of Art Rapporteur Laura Brambilla Professeure HES associée, HES-SO Examinatrice Marine Cotte Directrice de recherche CNRS, ESRF Examinatrice Anne-Laure Carré Ingénieur de recherche Ministère de la Culture, CNAM Examinatrice Ludovic Bellot-Gurlet Professeur, Sorbonne Université Directeur de thèse Solenn Réguer Scientifique de ligne DiffAbs, SOLEIL Co-encadrante