125867 20240731103421.0 doi 10.3390/heritage6020104 sideral 133378 ART-2023-133378 eng Maingi, E. M. Chemical and laser cleaning of corrosion encrustations on historical stained glass: a comparative study 2023 Access copy available to the general public Unrestricted The aim of this research work was to conduct a comparative study on the effectiveness of the application of chemical cleaning versus laser cleaning in the removal of surface congruent dissolution products from a potash-lime–silica historical stained-glass sample. EDTA was selected as the chemical cleaning agent. Laser cleaning was performed using a 238 fs pulse UV (343 nm) laser. The comparative cleaning studies were carried out on a stained-glass piece supplied by the Maison Lorin Glass Restoration Workshop from Chartres, France. Given the complex nature, irregular thickness and heterogeneity of the encrustations found on the glass, the two cleaning approaches were carefully performed step by step, while monitoring the process using an optical microscope. Raman spectroscopy and field emission scanning electron microscopy were used to characterize the changes induced on the sample surface during the cleaning process. The results demonstrate that the two cleaning approaches were able to eliminate the outer surface dark layer associated with carbon compounds, as well as the external part of the white layer generated by the crystallization of salts, formed with the dissolved elements after a reaction with the air. A comparison of the advantages and disadvantages of each method is also presented. info:eu-repo/grantAgreement/ES/DGA/T54-20R info:eu-repo/grantAgreement/EC/H2020/766311/EU/European Doctorate in ARchaeological and Cultural Heritage MATerials science/ED-ARCHMAT This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 766311-ED-ARCHMAT info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.405 2023 Archeology (arts and humanities) 2023 Q1 Conservation 2023 Q1 Materials Science (miscellaneous) 2023 Q3 2.9 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Alonso, M. P. Angurel, L. A. Universidad de Zaragoza (orcid)0000-0001-5685-2366 de la Fuente, G. F. (orcid)0000-0002-0500-1745 Dubernet, S. Chapoulie, R. Mellouët, O. Vally, E. 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 6, 2 (2023), 1942-1957 Heritage 2571-9408 3539696 http://zaguan.unizar.es/record/125867/files/texto_completo.pdf Versión publicada 2695614 http://zaguan.unizar.es/record/125867/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:125867 articulos driver 2024-07-31-10:09:45 ARTICLE