Denis Prokuratov, Andrey Samokhvalov, Dmitry Pankin, Oleg Vereshchagin, Nikolai Kurganov, Anastasia Povolotckaia, Alexander Shimko, Alexandra Mikhailova, Roman Balmashnov, Anastasia Reveguk, Olga Smolyanskaya, Dmitry Redka, Vjaceslavs Bobrovs
{"title":"Investigation towards Laser Cleaning of Corrosion Products from Lead Objects","authors":"Denis Prokuratov, Andrey Samokhvalov, Dmitry Pankin, Oleg Vereshchagin, Nikolai Kurganov, Anastasia Povolotckaia, Alexander Shimko, Alexandra Mikhailova, Roman Balmashnov, Anastasia Reveguk, Olga Smolyanskaya, Dmitry Redka, Vjaceslavs Bobrovs","doi":"10.3390/heritage6020071","DOIUrl":null,"url":null,"abstract":"In this work lasers with micro-, nano-, pico- and femtosecond pulse durations were used to clean atmospheric corrosion products from the fragments of a 19th-century lead outdoor sculpture. The state of the surface was studied by optical microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy. It was shown that for all lasers used there is no self-limiting cleaning effect, and the metal damage threshold is lower than the corrosion removal threshold. Using the XPS method, it has been demonstrated that the effect of turning a metallic lead surface blue after irradiation is associated with an interference effect in the PbO film. Raman spectroscopy indicated no phase changes in the corrosion layer after laser cleaning with 8 ns, 75 ps and 100 fs pulses, which makes these lasers useful for the layer-by-layer cleaning of archaeological objects.","PeriodicalId":12934,"journal":{"name":"Heritage","volume":"59 4","pages":"0"},"PeriodicalIF":2.0000,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Heritage","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/heritage6020071","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"HUMANITIES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 2
Abstract
In this work lasers with micro-, nano-, pico- and femtosecond pulse durations were used to clean atmospheric corrosion products from the fragments of a 19th-century lead outdoor sculpture. The state of the surface was studied by optical microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy. It was shown that for all lasers used there is no self-limiting cleaning effect, and the metal damage threshold is lower than the corrosion removal threshold. Using the XPS method, it has been demonstrated that the effect of turning a metallic lead surface blue after irradiation is associated with an interference effect in the PbO film. Raman spectroscopy indicated no phase changes in the corrosion layer after laser cleaning with 8 ns, 75 ps and 100 fs pulses, which makes these lasers useful for the layer-by-layer cleaning of archaeological objects.
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