Abstract
Laser cleaning of stones is a well established technique in the field of cultural heritage; however, there are few studies concerning its application to granites, though these rocks have been used from the past as structural and ornamental material in public works and buildings. In humid climates granite is almost permanently damp which causes biological colonisation and blackening of exterior surfaces. This work was focussed on the removal of biological black crust in granite by means of a Nd:YVO4 laser at the wavelength of 355 nm. Analysis of the conditions for efficient removal, and evaluation of the morphological/textural changes on the stone surface allowed us to establish safe conditions of irradiation. A number of surface analytical techniques such as optical microscopy (OM), optical profilometry, scanning electron microscopy/energy dispersive X-ray spectrometry (SEM/EDX) and X-ray photoelectron spectroscopy (XPS) were used to asses the effects of the laser treatment.
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References
Th. Warscheida, J. Braamsb, Int. Biodeterior. Biodegrad. 46, 343 (2000)
C. Fotakis, D. Anglos, V. Zafiropulos, S. Georgiou, V. Tornari, Lasers in the Preservation of Cultural Heritage. Principles and Applications (Taylor & Francis, London, 2007)
R.D. Wakefield, E. Brechet, D. McStay, The effect of laser cleaning on Scottish granite, in Lasers as Tools for Manufacturing 2, vol. 2993 (SPIE, Bellingham, 1997), pp. 246–251
R.M. Esbert, C.M. Grossi, A. Rojo, F.J. Alonso, M. Montoto, J. Ordaza, M.C. Pérez de Andrés, M. Barrera, E. Sebastián, C. Rodríguez-Navarro, K. Elert, J. Cult. Herit. 4, 50 (2003)
C.M. Grossi, F.J. Alonso, R.M. Esbert, A. Rojo, Color Res. Appl. 32, 152 (2007)
F.J. Alonso, R.M. Esbert, J. Ordaz, C.M. Grossi, Mater. Constr. 54, 45 (2004)
A. Ramil, A.J. López, M.P. Mateo, C. Álvarez, A. Yáñez, Color changes in Galician granitic stones induced by UV Nd:YAG laser irradiation, in Lasers in the Conservation of Artworks, LACONA VII Proceedings (Taylor & Francis, London, 2008), pp. 199–202
A. Pan, S. Chiussi, J. Serra, P. González, B. León, J. Cult. Herit. 10, 48 (2009)
G. Marakis, P. Pouli, V. Zafiropulos, P. Maravelaki-Kalaitzaki, J. Cult. Herit. 4, 83s (2003)
B. Prieto, N. Aira, B. Silva, Sci. Total Environ. 381, 280 (2007)
C. Colombo, C. Daffara, R. Fontana, M.C. Gambino, M. Mastroianni, E. Pampaloni, M. Realini, A. Sansonetti, Evaluation by laser micro-profilometry of morphological changes induced on stone materials by laser cleaning, in Lasers in the Conservation of Artworks, LACONA VI Proceedings (Springer, Berlin, 2007)
E.S. Gadelmawla, M.M. Koura, T.M.A. Maksoud, I.M. Elewa, H.H. Soliman, J. Mater. Process. Technol. 123, 133 (2002)
W.A. Deer, R.A. Howie, J. Zussman, An Introduction to the Rock-Forming Minerals, 2nd edn. (Longman & Scientific, London, 1992)
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López, A.J., Rivas, T., Lamas, J. et al. Optimisation of laser removal of biological crusts in granites. Appl. Phys. A 100, 733–739 (2010). https://doi.org/10.1007/s00339-010-5652-x
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DOI: https://doi.org/10.1007/s00339-010-5652-x