Studies of the Iranian medieval ceramics surface modified by pulsed tea CO2 and Nd:YAG lasers
Abstract
This paper presents the results of the morphological and chemical changes on the surface of an Iranian ceramics sample irradiated by a Transversely Excited Atmospheric (TEA) CO2 and an Nd:YAG laser. The sample originates from the archeological site of Yazd (Iran) and is assumed to have been a part of an aqueduct. The effect of laser parameters (energy density (fluency), number of pulses and wavelength) on the induced changes was studied. The tests were performed in order to establish the mechanism of the interaction with the fluence above the damage threshold. This is an essential parameter in the use of lasers for cleaning as well as for eliminating surface defects such as cracks, by melting superficial layers and thus strengthening the objects in question. Another objective was to obtain as much as possible information about the material composition necessary for the conservation and restoration of this ceramics. A TEA CO2 (10.6 mu m wavelength, pulse duration 100 ns (Full Width at H...alf Maximum - FWHM)) laser and an Nd:YAG laser (wavelength 1064 nm and 532 nm, FWHM = 150 ps) have been used for the surface treatment. Laser fluences were in the range of 1-20 J/cm(2). The ceramics surface morphology modifications, induced by pulsed lasers, were characterized by a scanning electron microscope (SEM), while the composition was examined by energy-dispersive (EDX) and X-ray fluorescence (XRF) spectroscopy. The results show that there are significant differences depending on the laser applied and whether the surface is glazed or not. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Keywords:
Surfaces / Medieval Iranian ceramics / CO2 laser / Nd:YAG laser / Morphological and chemical changesSource:
Ceramics International, 2015, 41, 1, 85-100Funding / projects:
- Application of Novel Measurement and Computational Techniques on Investigation of Air Flow in Ventilation Systems of Energy Extremely Efficient (“Passive”) Buildings (RS-MESTD-Technological Development (TD or TR)-35046)
- Investigation and Optimization of the Technological and Functional Performance of the Ventilation Mill in the Thermal Power Plant Kostolac B (RS-MESTD-Technological Development (TD or TR)-34028)
- Ministry of Culture of the Republic of Serbia [1/74-14.7.2011]
DOI: 10.1016/j.ceramint.2014.08.036
ISSN: 0272-8842; 1873-3956
WoS: 000346216300010
Scopus: 2-s2.0-85027919770
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Institution/Community
VinčaTY - JOUR AU - Polic, S. AU - Ristic, S. AU - Stašić, Jelena AU - Trtica, Milan AU - Radojkovic, B. PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/287 AB - This paper presents the results of the morphological and chemical changes on the surface of an Iranian ceramics sample irradiated by a Transversely Excited Atmospheric (TEA) CO2 and an Nd:YAG laser. The sample originates from the archeological site of Yazd (Iran) and is assumed to have been a part of an aqueduct. The effect of laser parameters (energy density (fluency), number of pulses and wavelength) on the induced changes was studied. The tests were performed in order to establish the mechanism of the interaction with the fluence above the damage threshold. This is an essential parameter in the use of lasers for cleaning as well as for eliminating surface defects such as cracks, by melting superficial layers and thus strengthening the objects in question. Another objective was to obtain as much as possible information about the material composition necessary for the conservation and restoration of this ceramics. A TEA CO2 (10.6 mu m wavelength, pulse duration 100 ns (Full Width at Half Maximum - FWHM)) laser and an Nd:YAG laser (wavelength 1064 nm and 532 nm, FWHM = 150 ps) have been used for the surface treatment. Laser fluences were in the range of 1-20 J/cm(2). The ceramics surface morphology modifications, induced by pulsed lasers, were characterized by a scanning electron microscope (SEM), while the composition was examined by energy-dispersive (EDX) and X-ray fluorescence (XRF) spectroscopy. The results show that there are significant differences depending on the laser applied and whether the surface is glazed or not. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Studies of the Iranian medieval ceramics surface modified by pulsed tea CO2 and Nd:YAG lasers VL - 41 IS - 1 SP - 85 EP - 100 DO - 10.1016/j.ceramint.2014.08.036 ER -
@article{ author = "Polic, S. and Ristic, S. and Stašić, Jelena and Trtica, Milan and Radojkovic, B.", year = "2015", abstract = "This paper presents the results of the morphological and chemical changes on the surface of an Iranian ceramics sample irradiated by a Transversely Excited Atmospheric (TEA) CO2 and an Nd:YAG laser. The sample originates from the archeological site of Yazd (Iran) and is assumed to have been a part of an aqueduct. The effect of laser parameters (energy density (fluency), number of pulses and wavelength) on the induced changes was studied. The tests were performed in order to establish the mechanism of the interaction with the fluence above the damage threshold. This is an essential parameter in the use of lasers for cleaning as well as for eliminating surface defects such as cracks, by melting superficial layers and thus strengthening the objects in question. Another objective was to obtain as much as possible information about the material composition necessary for the conservation and restoration of this ceramics. A TEA CO2 (10.6 mu m wavelength, pulse duration 100 ns (Full Width at Half Maximum - FWHM)) laser and an Nd:YAG laser (wavelength 1064 nm and 532 nm, FWHM = 150 ps) have been used for the surface treatment. Laser fluences were in the range of 1-20 J/cm(2). The ceramics surface morphology modifications, induced by pulsed lasers, were characterized by a scanning electron microscope (SEM), while the composition was examined by energy-dispersive (EDX) and X-ray fluorescence (XRF) spectroscopy. The results show that there are significant differences depending on the laser applied and whether the surface is glazed or not. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Studies of the Iranian medieval ceramics surface modified by pulsed tea CO2 and Nd:YAG lasers", volume = "41", number = "1", pages = "85-100", doi = "10.1016/j.ceramint.2014.08.036" }
Polic, S., Ristic, S., Stašić, J., Trtica, M.,& Radojkovic, B.. (2015). Studies of the Iranian medieval ceramics surface modified by pulsed tea CO2 and Nd:YAG lasers. in Ceramics International, 41(1), 85-100. https://doi.org/10.1016/j.ceramint.2014.08.036
Polic S, Ristic S, Stašić J, Trtica M, Radojkovic B. Studies of the Iranian medieval ceramics surface modified by pulsed tea CO2 and Nd:YAG lasers. in Ceramics International. 2015;41(1):85-100. doi:10.1016/j.ceramint.2014.08.036 .
Polic, S., Ristic, S., Stašić, Jelena, Trtica, Milan, Radojkovic, B., "Studies of the Iranian medieval ceramics surface modified by pulsed tea CO2 and Nd:YAG lasers" in Ceramics International, 41, no. 1 (2015):85-100, https://doi.org/10.1016/j.ceramint.2014.08.036 . .