Treacy, G.M. and Breslin, Carmel B.
(1998)
Electrochemical studies on single-crystal aluminium surfaces.
Electrochimica Acta, 43 (12-13).
pp. 1715-1720.
ISSN 0013-4686
Abstract
The electrochemical behaviour of single-crystal aluminium oriented in the (111), (110) and (100) directions in chloride- and indium-containing solutions was studied. It was found that the susceptibility of the single crystals to the onset of pitting attack in the chloride solution varied in the order (111)>(110)>(100). This was evident from pitting potential and induction time data, where the most noble pitting potential values and the longest induction periods were recorded for the (100) surface. This was explained in terms of differences in the surface energy of (111), (110) and (100) planes. It was also found that cathodic reduction reactions (hydrogen evolution and oxygen reduction reactions) proceeded at a greater rate on the (100) surface. In addition, the time delay between the addition of indium ions to solution and the onset of activation of the immersed electrode by the indium species was shorter for the (100) surface. This was attributed to the more efficient incorporation of indium into the (100) lattice.
| Item Type: |
Article
|
| Keywords: |
aluminium; single crystal; pitting; indium activation; cathodic reduction; |
| Academic Unit: |
Faculty of Science and Engineering > Chemistry |
| Item ID: |
7950 |
| Identification Number: |
https://doi.org/10.1016/S0013-4686(97)00305-8 |
| Depositing User: |
Dr. Carmel Breslin
|
| Date Deposited: |
22 Feb 2017 15:23 |
| Journal or Publication Title: |
Electrochimica Acta |
| Publisher: |
Elsevier B.V. |
| Refereed: |
Yes |
| URI: |
|
| Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
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