Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
Adherent polyaniline films on aluminum alloy 2024-T3 have been prepared by electrodeposition from aniline containing oxalic acid solution. The most appropriate method to prepare protective films was a successive galvanostatic deposition of 500 seconds. With this type of film, the open circuit potent...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2003-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100009 |
| _version_ | 1819238531283812352 |
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| author | Huerta-Vilca Domingo Moraes Sandra R. Motheo Artur J. |
| author_facet | Huerta-Vilca Domingo Moraes Sandra R. Motheo Artur J. |
| author_sort | Huerta-Vilca Domingo |
| collection | DOAJ |
| description | Adherent polyaniline films on aluminum alloy 2024-T3 have been prepared by electrodeposition from aniline containing oxalic acid solution. The most appropriate method to prepare protective films was a successive galvanostatic deposition of 500 seconds. With this type of film, the open circuit potential of the coating shifted around 0.065V vs. SCE compared to the uncoated alloy. The polyaniline coatings can be considered as candidates to protect copper-rich (3 - 5%) aluminum alloys by avoiding the galvanic couple between re-deposited copper on the surface and the bulk alloy. The performance of the polyaniline films was verified by immersion tests up to 2.5 months. It was good with formation of some aluminum oxides due to electrolyte permeation so, in order to optimize the performance a coating formulation would content an isolation topcoat. |
| first_indexed | 2024-12-23T13:37:42Z |
| format | Article |
| id | doaj.art-3dd2f5d027d94cdf92d1b0209f8917f2 |
| institution | Directory Open Access Journal |
| issn | 0103-5053 |
| language | English |
| last_indexed | 2024-12-23T13:37:42Z |
| publishDate | 2003-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-3dd2f5d027d94cdf92d1b0209f8917f22022-12-21T17:44:58ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50532003-01-011415258Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3Huerta-Vilca DomingoMoraes Sandra R.Motheo Artur J.Adherent polyaniline films on aluminum alloy 2024-T3 have been prepared by electrodeposition from aniline containing oxalic acid solution. The most appropriate method to prepare protective films was a successive galvanostatic deposition of 500 seconds. With this type of film, the open circuit potential of the coating shifted around 0.065V vs. SCE compared to the uncoated alloy. The polyaniline coatings can be considered as candidates to protect copper-rich (3 - 5%) aluminum alloys by avoiding the galvanic couple between re-deposited copper on the surface and the bulk alloy. The performance of the polyaniline films was verified by immersion tests up to 2.5 months. It was good with formation of some aluminum oxides due to electrolyte permeation so, in order to optimize the performance a coating formulation would content an isolation topcoat.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100009aluminum alloyelectrosynthesispolyanilinecorrosion protection |
| spellingShingle | Huerta-Vilca Domingo Moraes Sandra R. Motheo Artur J. Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3 Journal of the Brazilian Chemical Society aluminum alloy electrosynthesis polyaniline corrosion protection |
| title | Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3 |
| title_full | Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3 |
| title_fullStr | Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3 |
| title_full_unstemmed | Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3 |
| title_short | Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3 |
| title_sort | electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024 t3 |
| topic | aluminum alloy electrosynthesis polyaniline corrosion protection |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100009 |
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