Studies of pulsed tea CO2 and Nd:YAG lasers application in the ceramics surface conservation
Abstract
Air pollution results in the deposition of variety of organic and inorganic compounds on the surface of historic monuments. Traditional methods of ceramics cleaning include abrasive treatments, chemical treatments, ultrasound and steam cleaning. Laser cleaning is the most effective and the safest of all of the methods used in the restoration of monuments. Often this is the only way to perform cleaning without damaging the surface. The laser technology, in contrast to the traditional one, does not use of water, caustic solvents, solutions, abrasives or other chemicals; hence after execution of works a minimum amount of waste is produced so that is environmentally suitable. The only wastes generated are the impurities ejected from the surface. Safety spectacles and a face mask are the only necessary protective clothing.
The paper presents analysis of lasers potentials in cleaning of archaeological ceramic. Ceramic archaeological sample was exposed by the various combinations of laser w...avelengths, energy density (fluency) and number of pulses. Based on the results the morphological and chemical changes on the surface of the ceramic samples could be investigated and the damage threshold could be determined. These are the essential parameters in the use of lasers for cleaning. TEA CO2 (10.6 μm wavelength, pulse duration 100 ns) and Nd:YAG laser (wavelength 1064 nm and 532 nm) have been used for surfaces treatment. The ceramics surface morphology modifications, induced by pulsed lasers, were characterized by scanning electron microscope (SEM), while the composition was examined by energy-dispersive (EDX).
Keywords:
Ceramic laser cleaning / CO2 laser / Nd:YAG laser / Morphological and chemical changesSource:
Ecologica, 2014, 21, 75, 556-562Publisher:
- Scientific professional society for environmental protection of Serbia-ECOLOGICA
Funding / projects:
- Ministry of Culture of the Republic of Serbia project number 1/74-14.7.2011
- 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)
- 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)
Institution/Community
IHTMTY - JOUR AU - Radojković, Bojana M. AU - Ristić, Slavica AU - Polić, Suzana R. PY - 2014 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/5494 AB - Air pollution results in the deposition of variety of organic and inorganic compounds on the surface of historic monuments. Traditional methods of ceramics cleaning include abrasive treatments, chemical treatments, ultrasound and steam cleaning. Laser cleaning is the most effective and the safest of all of the methods used in the restoration of monuments. Often this is the only way to perform cleaning without damaging the surface. The laser technology, in contrast to the traditional one, does not use of water, caustic solvents, solutions, abrasives or other chemicals; hence after execution of works a minimum amount of waste is produced so that is environmentally suitable. The only wastes generated are the impurities ejected from the surface. Safety spectacles and a face mask are the only necessary protective clothing. The paper presents analysis of lasers potentials in cleaning of archaeological ceramic. Ceramic archaeological sample was exposed by the various combinations of laser wavelengths, energy density (fluency) and number of pulses. Based on the results the morphological and chemical changes on the surface of the ceramic samples could be investigated and the damage threshold could be determined. These are the essential parameters in the use of lasers for cleaning. TEA CO2 (10.6 μm wavelength, pulse duration 100 ns) and Nd:YAG laser (wavelength 1064 nm and 532 nm) have been used for surfaces treatment. The ceramics surface morphology modifications, induced by pulsed lasers, were characterized by scanning electron microscope (SEM), while the composition was examined by energy-dispersive (EDX). PB - Scientific professional society for environmental protection of Serbia-ECOLOGICA T2 - Ecologica T1 - Studies of pulsed tea CO2 and Nd:YAG lasers application in the ceramics surface conservation VL - 21 IS - 75 SP - 556 EP - 562 UR - https://hdl.handle.net/21.15107/rcub_cer_5494 ER -
@article{ author = "Radojković, Bojana M. and Ristić, Slavica and Polić, Suzana R.", year = "2014", abstract = "Air pollution results in the deposition of variety of organic and inorganic compounds on the surface of historic monuments. Traditional methods of ceramics cleaning include abrasive treatments, chemical treatments, ultrasound and steam cleaning. Laser cleaning is the most effective and the safest of all of the methods used in the restoration of monuments. Often this is the only way to perform cleaning without damaging the surface. The laser technology, in contrast to the traditional one, does not use of water, caustic solvents, solutions, abrasives or other chemicals; hence after execution of works a minimum amount of waste is produced so that is environmentally suitable. The only wastes generated are the impurities ejected from the surface. Safety spectacles and a face mask are the only necessary protective clothing. The paper presents analysis of lasers potentials in cleaning of archaeological ceramic. Ceramic archaeological sample was exposed by the various combinations of laser wavelengths, energy density (fluency) and number of pulses. Based on the results the morphological and chemical changes on the surface of the ceramic samples could be investigated and the damage threshold could be determined. These are the essential parameters in the use of lasers for cleaning. TEA CO2 (10.6 μm wavelength, pulse duration 100 ns) and Nd:YAG laser (wavelength 1064 nm and 532 nm) have been used for surfaces treatment. The ceramics surface morphology modifications, induced by pulsed lasers, were characterized by scanning electron microscope (SEM), while the composition was examined by energy-dispersive (EDX).", publisher = "Scientific professional society for environmental protection of Serbia-ECOLOGICA", journal = "Ecologica", title = "Studies of pulsed tea CO2 and Nd:YAG lasers application in the ceramics surface conservation", volume = "21", number = "75", pages = "556-562", url = "https://hdl.handle.net/21.15107/rcub_cer_5494" }
Radojković, B. M., Ristić, S.,& Polić, S. R.. (2014). Studies of pulsed tea CO2 and Nd:YAG lasers application in the ceramics surface conservation. in Ecologica Scientific professional society for environmental protection of Serbia-ECOLOGICA., 21(75), 556-562. https://hdl.handle.net/21.15107/rcub_cer_5494
Radojković BM, Ristić S, Polić SR. Studies of pulsed tea CO2 and Nd:YAG lasers application in the ceramics surface conservation. in Ecologica. 2014;21(75):556-562. https://hdl.handle.net/21.15107/rcub_cer_5494 .
Radojković, Bojana M., Ristić, Slavica, Polić, Suzana R., "Studies of pulsed tea CO2 and Nd:YAG lasers application in the ceramics surface conservation" in Ecologica, 21, no. 75 (2014):556-562, https://hdl.handle.net/21.15107/rcub_cer_5494 .