Artistic and Laboratory Patinas on Copper and Bronze Surfaces
The study of characterisation and production of artificial patinas plays a key role in the field of cultural heritage. In particular, artistic patinas should be considered as an integral part of the artworks, as they are deliberately produced by artists and metalworkers as a part of their artistic d...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/21/11873 |
| _version_ | 1827765874486935552 |
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| author | Chiara Petiti Lucia Toniolo Letizia Berti Sara Goidanich |
| author_facet | Chiara Petiti Lucia Toniolo Letizia Berti Sara Goidanich |
| author_sort | Chiara Petiti |
| collection | DOAJ |
| description | The study of characterisation and production of artificial patinas plays a key role in the field of cultural heritage. In particular, artistic patinas should be considered as an integral part of the artworks, as they are deliberately produced by artists and metalworkers as a part of their artistic design. Therefore, it is important to achieve a good knowledge of their composition and corrosion behaviour in order to setup and perform optimal conservation strategies for their preservation. In addition, the possibility of realising laboratory patinas that are as representative as possible of natural corrosion layers is important for the realisation of laboratory specimens which can be used as reliable model systems (mock-ups) for the study of degradation mechanisms and conservative treatments. For this work, both artistic and laboratory patinas have been considered and investigated. In particular, six different artistic patinas produced by <i>Fonderia Artistica Battaglia</i> were characterised. Moreover, a series of laboratory patinas was produced according to chemical procedures adapted from those already reported in the literature. The patina morphology was evaluated by stereomicroscopy observations, their composition was analysed by means of FTIR and XRD analysis and their corrosion behaviour was evaluated by LPR and EIS measurements. Finally, the LPR and EIS analysis have pointed out the low protection provided by the corrosion layers of artistic patinas. In regard to laboratory patinas, the optimized procedures of production were found to be effective for the realization of the main corrosion products of copper-based surfaces. From an electrochemical point of view in particular, quite different electrochemical behaviours were observed on artificial corrosion layers with the same chemical composition. |
| first_indexed | 2024-03-11T11:34:00Z |
| format | Article |
| id | doaj.art-c695bb573b5e4a37bfc6054dd3b73161 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T11:34:00Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-c695bb573b5e4a37bfc6054dd3b731612023-11-10T14:59:01ZengMDPI AGApplied Sciences2076-34172023-10-0113211187310.3390/app132111873Artistic and Laboratory Patinas on Copper and Bronze SurfacesChiara Petiti0Lucia Toniolo1Letizia Berti2Sara Goidanich3Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico of Milan, Piazzale Leonardo Da Vinci 32, 20133 Milan, ItalyDepartment of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico of Milan, Piazzale Leonardo Da Vinci 32, 20133 Milan, ItalyDepartment of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico of Milan, Piazzale Leonardo Da Vinci 32, 20133 Milan, ItalyDepartment of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico of Milan, Piazzale Leonardo Da Vinci 32, 20133 Milan, ItalyThe study of characterisation and production of artificial patinas plays a key role in the field of cultural heritage. In particular, artistic patinas should be considered as an integral part of the artworks, as they are deliberately produced by artists and metalworkers as a part of their artistic design. Therefore, it is important to achieve a good knowledge of their composition and corrosion behaviour in order to setup and perform optimal conservation strategies for their preservation. In addition, the possibility of realising laboratory patinas that are as representative as possible of natural corrosion layers is important for the realisation of laboratory specimens which can be used as reliable model systems (mock-ups) for the study of degradation mechanisms and conservative treatments. For this work, both artistic and laboratory patinas have been considered and investigated. In particular, six different artistic patinas produced by <i>Fonderia Artistica Battaglia</i> were characterised. Moreover, a series of laboratory patinas was produced according to chemical procedures adapted from those already reported in the literature. The patina morphology was evaluated by stereomicroscopy observations, their composition was analysed by means of FTIR and XRD analysis and their corrosion behaviour was evaluated by LPR and EIS measurements. Finally, the LPR and EIS analysis have pointed out the low protection provided by the corrosion layers of artistic patinas. In regard to laboratory patinas, the optimized procedures of production were found to be effective for the realization of the main corrosion products of copper-based surfaces. From an electrochemical point of view in particular, quite different electrochemical behaviours were observed on artificial corrosion layers with the same chemical composition.https://www.mdpi.com/2076-3417/13/21/11873artificial patinasartistic patinasbronzecoppercorrosion |
| spellingShingle | Chiara Petiti Lucia Toniolo Letizia Berti Sara Goidanich Artistic and Laboratory Patinas on Copper and Bronze Surfaces Applied Sciences artificial patinas artistic patinas bronze copper corrosion |
| title | Artistic and Laboratory Patinas on Copper and Bronze Surfaces |
| title_full | Artistic and Laboratory Patinas on Copper and Bronze Surfaces |
| title_fullStr | Artistic and Laboratory Patinas on Copper and Bronze Surfaces |
| title_full_unstemmed | Artistic and Laboratory Patinas on Copper and Bronze Surfaces |
| title_short | Artistic and Laboratory Patinas on Copper and Bronze Surfaces |
| title_sort | artistic and laboratory patinas on copper and bronze surfaces |
| topic | artificial patinas artistic patinas bronze copper corrosion |
| url | https://www.mdpi.com/2076-3417/13/21/11873 |
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