| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5353612 | Applied Surface Science | 2016 | 10 Pages |
Abstract
In this study we evaluate the laser cleaning of tarnished pure and sterling silver substrates using a nanosecond Q-switched Nd:YAG laser at 1064, 532 and 266Â nm. To assess the effects associated with cyclic laser cleaning treatments, several cycles of tarnishing followed by laser cleaning were applied on silver coupons that were characterized by gravimetry, colorimetry, scanning electron microscopy, X-ray photoelectron spectroscopy and micro-Raman spectroscopy. According to the obtained results, none of the three wavelengths is recommended for laser cleaning of pure silver objects, while for sterling silver artifacts, the visible laser wavelength of 532Â nm seems the most appropriate.
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Authors
T. Palomar, M. Oujja, I. Llorente, B. RamÃrez Barat, M.V. Cañamares, E. Cano, M. Castillejo,