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Laser Cleaning of a Renaissance Epitaph with Traces of Azurite

  • Johann Nimmrichter
  • Robert Linke
Part of the Springer proceedings in physics book series (SPPHY, volume 116)

In Steyr, Austria, a Renaissance epitaph was cleaned by an Nd:YAG laser. Compared to cleaning tests, carried out with microsandblasting, (NH4)2CO3 and water compresses, the laser cleaning was much more sensible and faster. Satisfying results were realized for the calcareous sandstone of the frame as well as for the red and compact limestone of the relief. One of the big advantages was the detection of several traces of pigments, which were observed during the layered cleaning process. It can be assumed that other cleaning methods could not hold these last spots of polychrome surfaces. Care had to be taken of the energy. The application of higher energies on the red marble leads to colour changes into yellowish red.

Keywords

Material Loss Cleaning Method Gypsum Crystal Binding Medium Laser Cleaning 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Johann Nimmrichter
    • 1
  • Robert Linke
    • 1
  1. 1.Department for RestorationAustrian Federal Office for Care and Protection of MonumentsAustria

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