Pigments historiques sous rayonnement laser (IR, VIS et UV)
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- Authors:
- CHAPPE, Marie
HILDENHAGEN, Jens
DICKMANN, Klaus
BREDOL, Michael - Author Affiliations:
- Laboratoire pour les sciences des matériaux, Université des sciences appliquées de Münster, Département chimie, 48565 Steinfurt, Germany
Laserzentrum FH Münster (LFM), Université des sciences appliquées de Münster, Département physique, 48565 Steinfurt, Germany - Source:
- L' Actualité chimique (Paris. 1973). (7):3-10
- Publication Date:
- 2002-01-01
- Language:
- French
- Abstract:
- The possibility to use laser radiation to clean historical objects has been established for several years. A complex case and widely met problem are polychromes. They react (chemically as also physically) very sensitive towards laser radiation. In this study the reaction of pigments was investigated in dependency on the incident wavelength (Nd:YAG, λ=1064, 532, 355 and 266 nm) and energy density. The chemical and also the physical interactions were investigated. In this work, the following analytical methods were used: differential thermal analysis (DTA), colour measurements (CIE-L*a*b*), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDX). It turned out that the colour change of the pigments can have different origins: they can for instance be induced by laser induced oxidation, reduction or phase changing. Most of the pigments show reactions at very low energy densities (H<100 mJ/cm2). Overall the fundamental wavelength of the Nd:YAG-laser (λ=1064 nm) proved to be most suitable, whereas λ=355 nm shows most influence on the colour change.
- Subjects:
- Aluminosilicate
Aluminosilicates
Aluminosilicato
Analyse thermique différentielle
Differential thermal analysis
Análisis térmico diferencial
Bleu outremer
Ultramarine
Carbonate
Carbonates
Carbonato
Coloration polychrome
Polychromatic staining
Coloración policroma
Colorimétrie
Colorimetry
Colorimetría
Diffraction RX
X ray diffraction
Difracción RX
Décoloration
Discoloration
Decoloración
Dégradation photochimique
Photochemical degradation
Degradación fotoquímica
Irradiation laser
Laser irradiation
Irradiación láser
Laser YAG
YAG laser
Laser néodyme
Neodymium lasers
Microanalyse
Microanalysis
Microanálisis
Minium
Minio
Nettoyage surface
Surface cleaning
Limpieza superficie
Objet ancien
Old object
Objeto antiguo
Objet art
Cultural object
Objeto arte
Oxyde
Oxides
Óxido
Peinture(art)
Painting (art)
Pintura(arte)
Pigment minéral
Inorganic pigment
Pigmento inorgánico
Restauration
Restoration
Restauración
Réaction chimique
Chemical reaction
Reacción química
Réaction physique
Physical reaction
Reacción física
Sonde électronique
Electron probe
Sonda electrónica
Sulfure
Sulfides
Sulfuro
Traitement surface
Surface treatment
Tratamiento superficie
Blanc de plomb
Blanc de zinc
Bleu de cobalt
Jaune de Naples
Laque de Garance
Malachite
Oxyde vert de chrome
Terre de Sienne
Vermillon
Sciences exactes et technologie
Exact sciences and technology
Sciences appliquees
Applied sciences
Industries chimique et parachimique
Chemical industry and chemicals
Industries des produits chimiques
Industrial chemicals
Colorants, pigments
Dyes, pigments
Industrie des polymeres, peintures, bois
Polymer industry, paints, wood
Produits de revêtement. Peintures, vernis et encres
Coatings. Paints, varnishes and inks
Formation et durcissement des feuils, propriétés, essais
Film formation and curing, properties, testing
Art et archeologie
Art and archaeology
Généralités
Generalities
Principes d'étude
Research principies
Méthodes
Methods
Méthodes d'observation
Methods of observation
Conservation. Restauration
Chemistry
Chimie
Chemical industry parachemical industry
Industrie chimique et parachimique
Polymers, paint and wood industries
Polymères, industries des peintures et bois - Format:
- Academic Journal
- Database:
- FRANCIS Archive
- Journal:
- L' Actualité chimique (Paris. 1973)
- Issue:
- 7
- Page Start:
- 3
- Page Count:
- 8
- ISSN:
- 01519093
- Publisher:
- Paris: Société Française de Chimie, 2002.
- Document Type:
- Article
- Physical Description:
- print; 22 ref
