Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection Treatments
In the framework of the protection of copper objects exposed to atmospheric corrosion, different solutions are envisaged, among them carboxylate treatments (HC<sub>10</sub>). In this study, an analytical approach based on complementary techniques from micrometer to nanometer scale (&...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-09-01
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| Series: | Heritage |
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| Online Access: | https://www.mdpi.com/2571-9408/2/3/162 |
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| author | Maëva L’héronde Muriel Bouttemy Florence Mercier-Bion Delphine Neff Emilande Apchain Arnaud Etcheberry Philippe Dillmann |
| author_facet | Maëva L’héronde Muriel Bouttemy Florence Mercier-Bion Delphine Neff Emilande Apchain Arnaud Etcheberry Philippe Dillmann |
| author_sort | Maëva L’héronde |
| collection | DOAJ |
| description | In the framework of the protection of copper objects exposed to atmospheric corrosion, different solutions are envisaged, among them carboxylate treatments (HC<sub>10</sub>). In this study, an analytical approach based on complementary techniques from micrometer to nanometer scale (μRS, SEM-EDS, SAM) is used to describe the properties of the corrosion products layer (CPL) and determine the penetration depth of the HC<sub>10</sub> protection treatment inside the CPL of copper samples issued from the roof of the Saint Martin church in Metz. The CPL consists in a thick brochantite layer (20 to 50 μm), mainly composed of Cu<sub>4</sub>SO<sub>4</sub>(OH)<sub>6</sub>, on top of a thinner (1 to 5 μm thick) cuprite layer, Cu<sub>2</sub>O, acting as a natural corrosion barrier on the metal. Application of the organic treatment is implemented by immersing the corroded samples in HC<sub>10</sub> solution, consistent with future requirements for large scale applications. Even for short-term duration (one minute), the HC<sub>10</sub> treatment penetrates to the cuprite/brochantite interface, but Cu(C<sub>10</sub>)<sub>2</sub> precipitate is only detected locally, whereas for a longer immersion of thirty minutes, it is present in higher proportions in the whole brochantite layer, filling the pores, up to the cuprite/brochantite interface. Cu(C<sub>10</sub>)<sub>2</sub> acts as a second inner barrier and prevents liquid infiltration. |
| first_indexed | 2024-12-10T05:32:27Z |
| format | Article |
| id | doaj.art-05598314863e454b85b19f66e3ca5cd9 |
| institution | Directory Open Access Journal |
| issn | 2571-9408 |
| language | English |
| last_indexed | 2024-12-10T05:32:27Z |
| publishDate | 2019-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Heritage |
| spelling | doaj.art-05598314863e454b85b19f66e3ca5cd92022-12-22T02:00:29ZengMDPI AGHeritage2571-94082019-09-01232640265110.3390/heritage2030162heritage2030162Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection TreatmentsMaëva L’héronde0Muriel Bouttemy1Florence Mercier-Bion2Delphine Neff3Emilande Apchain4Arnaud Etcheberry5Philippe Dillmann6LAPA-IRAMAT, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, FranceInstitut Lavoisier de Versailles (ILV), Université de Versailles Saint-Quentin-en-Yvelines, Université Paris-Saclay, CNRS, 45 avenue des États-Unis, 78035 Versailles, FranceLAPA-IRAMAT, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, FranceLAPA-IRAMAT, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, FranceLAPA-IRAMAT, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, FranceInstitut Lavoisier de Versailles (ILV), Université de Versailles Saint-Quentin-en-Yvelines, Université Paris-Saclay, CNRS, 45 avenue des États-Unis, 78035 Versailles, FranceLAPA-IRAMAT, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, FranceIn the framework of the protection of copper objects exposed to atmospheric corrosion, different solutions are envisaged, among them carboxylate treatments (HC<sub>10</sub>). In this study, an analytical approach based on complementary techniques from micrometer to nanometer scale (μRS, SEM-EDS, SAM) is used to describe the properties of the corrosion products layer (CPL) and determine the penetration depth of the HC<sub>10</sub> protection treatment inside the CPL of copper samples issued from the roof of the Saint Martin church in Metz. The CPL consists in a thick brochantite layer (20 to 50 μm), mainly composed of Cu<sub>4</sub>SO<sub>4</sub>(OH)<sub>6</sub>, on top of a thinner (1 to 5 μm thick) cuprite layer, Cu<sub>2</sub>O, acting as a natural corrosion barrier on the metal. Application of the organic treatment is implemented by immersing the corroded samples in HC<sub>10</sub> solution, consistent with future requirements for large scale applications. Even for short-term duration (one minute), the HC<sub>10</sub> treatment penetrates to the cuprite/brochantite interface, but Cu(C<sub>10</sub>)<sub>2</sub> precipitate is only detected locally, whereas for a longer immersion of thirty minutes, it is present in higher proportions in the whole brochantite layer, filling the pores, up to the cuprite/brochantite interface. Cu(C<sub>10</sub>)<sub>2</sub> acts as a second inner barrier and prevents liquid infiltration.https://www.mdpi.com/2571-9408/2/3/162corrosioncoppercultural heritagecorrosion inhibitorcarboxylate treatmentAuger spectroscopy |
| spellingShingle | Maëva L’héronde Muriel Bouttemy Florence Mercier-Bion Delphine Neff Emilande Apchain Arnaud Etcheberry Philippe Dillmann Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection Treatments Heritage corrosion copper cultural heritage corrosion inhibitor carboxylate treatment Auger spectroscopy |
| title | Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection Treatments |
| title_full | Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection Treatments |
| title_fullStr | Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection Treatments |
| title_full_unstemmed | Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection Treatments |
| title_short | Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection Treatments |
| title_sort | multiscale study of interactions between corrosion products layer formed on heritage cu objects and organic protection treatments |
| topic | corrosion copper cultural heritage corrosion inhibitor carboxylate treatment Auger spectroscopy |
| url | https://www.mdpi.com/2571-9408/2/3/162 |
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