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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| Auteurs principaux: | , |
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| Format: | Digital revista |
| Langue: | English |
| Publié: |
Sociedade Brasileira de Química
1997
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| Accès en ligne: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000200013 |
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