ToF-SIMS and u-Raman measurements on laser cleaned bronze archaeological artefacts |
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| Elisabetta Di Francia, Ruth Lahoz, Delphine Neff, Emma Angelini, Sabrina Grassini |
- Abstract:
- In this study, ToF-SIMS and u-Raman analyses have been employed to assess the feasibility of laser treatments as a selective, non invasive cleaning methodology for archaeological metallic artefacts. A Q-switched Yb:YAG fibre laser, operating at 1064 nm, has been used for the cleaning treatments, carried out in air and 18O rich atmosphere on an ancient bronze coin. The preliminary results show that laser cleaning treatment selectively removes the dangerous oxyhydroxy chlorides corrosion products without affecting the cuprite protective patina grown directly in contact with the metallic surface.
- Download:
- IMEKO-TC4-ARCHAEO-2017-057.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 MetroArchaeo 2017
- Title:
IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage
- Place:
- Lecce, ITALY
- Time:
- 23 October 2017 - 25 October 2017