Laser studies of metallic artworks

Drakaki, E.; Kandyla, M.; Chatzitheodoridis, Elias; Zergioti, I.; Serafetinides, A. A.; Terlixi, Agni-Vasileia; Kouloumpi, Eleni; Moutsatsou, A; Doulgerides, M.; Kantarelou, V.; Karydas, A. G.; Vlachou-Mogire, Constantina

doi:10.1007/s00339-010-5874-y

Cited by 9 publications

(6 citation statements)

References 16 publications

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“…All these experiments indicated that the 1064 nm laser pulse succeeded to clean metal coins; the only drawback comes from photothermal effects, which could be avoided only with the use of low fluences. This is also demonstrated in the literature [12][13][14][15].…”

Section: Materials and Laser Cleaningsupporting

confidence: 78%

Theoretical and experimental approach on laser cleaning of coins

et al. 2019

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Laser-based techniques are used more and more frequently for the cleaning of artifacts. Due to the different behavior of each material, when it is irradiated, studies and experiments are performed in order to find the optimum laser parameters for each case. In this work, the laser cleaning of coins is examined. Coins are studied with analytical methods in order to detect the corrosion products and the accretions. This information along with the composition of the coins' alloys is fed into an in-house developed program which estimates the penetration depth of the laser beam as well as the laser fluence for which the alloy starts to melt. Exploiting this information, laser cleaning of coins is performed with various conditions and parameters. Finally, the result is evaluated by using microscopic methods. From this research, it was found that the laser cleaning of copper, silver and aluminum alloys is feasible with Q-switched Nd:YAG at 1064 nm. Also, higher level of corrosion and accretions requires higher laser intensity. For low corrosion level on copper alloys, a thin water film on the irradiated area is beneficial.

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Section: Materials and Laser Cleaningsupporting

confidence: 78%

Theoretical and experimental approach on laser cleaning of coins

et al. 2019

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“…Equation (1) represents the method to simulate the removed depth analytically. Lasers can remove unwanted layers that conventional techniques cannot remove safely [5]. Ahn et al showed that a near-infrared (NIR) laser pulse provides an effective tool for removing lubricants from carbon steel surfaces [6].…”

Section: Introductionmentioning

confidence: 99%

Laser Cleaning Using Q-Switched Nd:YAG Laser of Low Carbon Steel Alloys

Ali

Taha

Mansour

2014

Advances in Condensed Matter Physics

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This paper represents the efforts to achieve the laser cleaning process of low carbon steel alloys AISI1005 and AISI1012 with 0.65 mm and 1 mm thickness, respectively. The cleaning experiments were performed with a Q-switched Nd:YAG nanosecond laser at wavelengths of 1064 nm and 532 nm. The parameters that have been selected for the present work are peak power which varies as 5, 15, 30, 40, and 50 MW and pulse repetition rate which varies from 1 to 6 Hz by 1 Hz increment. Effects of these parameters on the microstructure and the mechanical properties of the two alloys have been realized. Also predicted results of analytical model regarding the depth were compared with the experimental results which show a good agreement between both.

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“…Konarski and Opalinska used SIMS and Fourier transform-infra-red (FT-IR) to study cold plasma cleaning of copper and aluminium. 39 Two lasers were compared for the cleaning process; a Q-switched Nd:YAG laser operating at 1064 nm and with a pulse duration of 6 ns and a GaAlAs diode laser operating at 780 nm and with a 90 ps laser pulse. The efficiency of the cleaning process was monitored using FT-IR.…”

Section: Non-ferrous Metals and Alloysmentioning

confidence: 99%

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

Carter

Fisher

Goodall

et al. 2011

J. Anal. At. Spectrom.

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Metals 1.1 Ferrous metals and alloys 1.2 Non-ferrous metals and alloys 2 Chemicals 2.1 Petroleum and petroleum products 2.1.1 Petroleum products -gasoline, diesels, gasohol, exhaust particulates 2.1.2 Fuel -coal, fly ash, particulates/emissions 2.1.3 Oils -crude oil, lubricants 2.1.4 Alternative fuels 2.2 Organic chemicals and solvents 2.2.1 The analysis of archaeological and art objects 2.2.2 LIBS and other laser techniques 2.2.3 Mass spectrometric techniques 2.2.4 Ion beam techniques 2.2.5 Speciation 2.2.6 Extraction, preconcentration and sample introduction 2.3 Inorganic chemicals and acids 2.3.1 Reviews, overviews and CRMs 2.3.2 Cements, concretes and plasters 2.3.3 Matrix modifiers 2.3.4 Forensic applications 2.3.5 Other applications 2.3.6 The analysis of nano-structures 2.3.6.1 Reviews and CRMs 2.3.6.2 Methods of analysis 2.4 Nuclear materials 2.4.1 Reviews and overviews 2.4.2 Nuclear forensic and safeguards applications 2.4.3 Other nuclear applications 3 Advanced materials 3.1 Polymeric materials and composites

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Laser studies of metallic artworks

Cited by 9 publications

References 16 publications

Theoretical and experimental approach on laser cleaning of coins

Theoretical and experimental approach on laser cleaning of coins

Laser Cleaning Using Q-Switched Nd:YAG Laser of Low Carbon Steel Alloys

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

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