Overview
ABSTRACT
Lead-based pigments demonstrate a specific instability leading to the blackening of the pictorial layer. This alteration phenomenon is extremely detrimental to the aesthetics and readability of the work of art and there exists no restoration technique allowing for the restoration of the original appearance of the painting. The thermal properties of lead compounds allow for conceiving a method of treatment based on the irradiation of the blackened layer by a continuous laser beam. A series of experimental tests has allowed for optimizing the operational parameters and validating the process under the real conditions of a restoration workshop.
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Read the articleAUTHORS
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Sébastien AZE: Scientific Consultant, Marseille, France
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Jean-Marc VALLET: Research Engineer, Interdisciplinary Center for Heritage Conservation and Restoration, Marseille, France
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Olivier GRAUBY: Senior Lecturer, Aix-Marseille University and Centre Interdisciplinaire de Nanoscience de Marseille, France
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Vincent DETALLE: Research engineer, Historic Monuments Research Laboratory, Champs-sur-Marne, France
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Philippe DELAPORTE: Research Director, Lasers, Plasmas and Photonic Processes Laboratory, Marseille, France
INTRODUCTION
Area: Processing technology
Degree of technology diffusion: Emergence | Growth | Maturity
Technologies involved: Continuous laser irradiation
Fields of application: Restoration of works of art
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Restoration of lead paint using laser irradiation
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