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  4. Laser cleaning of gildings
 
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2007
Conference Paper
Title

Laser cleaning of gildings

Other Title
Laserreinigung von Vergoldungen
Abstract
Results of laser cleaning expts. on different gilding types like leaf gilding and fire gilding are presented in this contribution by means of three tested art objects. The reflectivity of gold is advantageously high for the typical laser cleaning wavelength of 1,064 nm. Addnl., to avoid damage like gold loss, the transfer of the absorbed laser pulse energy into the art object by thermal conduction is considered. Fire gilded surfaces are most easily cleaned because of the good heat transfer conditions which imply a high threshold intensity with respect to damage. This is different for leaf gilded surfaces but suitable laser cleaning parameters have also been found for this case. The results of laser cleaning expts. are presented by photog., microscopy, SEM and EDX anal.
Author(s)
Panzner, M.
Wiedemann, G.
Meier, M.
Conrad, W.
Kempe, A.
Hutsch, T.
Mainwork
Lasers in the conservation of artworks  
Conference
International Conference on Lasers in the Conservation of Artworks (LACONA) 2005  
DOI
10.1007/978-3-540-72130-7_3
Language
English
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Keyword(s)
  • laser cleaning

  • gildings

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