The effects of temperature and pH on the dissolution and passivation processes of copper in carbonate-bicarbonate solutions
Electrochemical studies of polycrystalline copper electrodes in carbonate-bicarbonate solutions analyzing both temperature and pH effects were carried out, covering a wide range of electrolyte composition in the 5-65 °C range. Hydrodynamic conditions were also considered. The results are explained on the basis of a modification of the characteristics of the film through solution stirring and high temperature. In this situation, a less hydrated passive layer is obtained, reducing the dissolution process. The ionic strength becomes an additional factor that affects the general state of the system.
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Sociedade Brasileira de Química
1997
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oai:scielo:S0103-505319970002000132012-10-30The effects of temperature and pH on the dissolution and passivation processes of copper in carbonate-bicarbonate solutionsRibotta,S.B.Folquer,M.E. copper pH temperature voltammetry Electrochemical studies of polycrystalline copper electrodes in carbonate-bicarbonate solutions analyzing both temperature and pH effects were carried out, covering a wide range of electrolyte composition in the 5-65 °C range. Hydrodynamic conditions were also considered. The results are explained on the basis of a modification of the characteristics of the film through solution stirring and high temperature. In this situation, a less hydrated passive layer is obtained, reducing the dissolution process. The ionic strength becomes an additional factor that affects the general state of the system.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.8 n.2 19971997-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000200013en10.1590/S0103-50531997000200013 |
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Brasil |
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English |
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| author |
Ribotta,S.B. Folquer,M.E. |
| spellingShingle |
Ribotta,S.B. Folquer,M.E. The effects of temperature and pH on the dissolution and passivation processes of copper in carbonate-bicarbonate solutions |
| author_facet |
Ribotta,S.B. Folquer,M.E. |
| author_sort |
Ribotta,S.B. |
| title |
The effects of temperature and pH on the dissolution and passivation processes of copper in carbonate-bicarbonate solutions |
| title_short |
The effects of temperature and pH on the dissolution and passivation processes of copper in carbonate-bicarbonate solutions |
| title_full |
The effects of temperature and pH on the dissolution and passivation processes of copper in carbonate-bicarbonate solutions |
| title_fullStr |
The effects of temperature and pH on the dissolution and passivation processes of copper in carbonate-bicarbonate solutions |
| title_full_unstemmed |
The effects of temperature and pH on the dissolution and passivation processes of copper in carbonate-bicarbonate solutions |
| title_sort |
effects of temperature and ph on the dissolution and passivation processes of copper in carbonate-bicarbonate solutions |
| description |
Electrochemical studies of polycrystalline copper electrodes in carbonate-bicarbonate solutions analyzing both temperature and pH effects were carried out, covering a wide range of electrolyte composition in the 5-65 °C range. Hydrodynamic conditions were also considered. The results are explained on the basis of a modification of the characteristics of the film through solution stirring and high temperature. In this situation, a less hydrated passive layer is obtained, reducing the dissolution process. The ionic strength becomes an additional factor that affects the general state of the system. |
| publisher |
Sociedade Brasileira de Química |
| publishDate |
1997 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000200013 |
| work_keys_str_mv |
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| _version_ |
1756403090739691520 |