Journal
CORROSION SCIENCE
Volume 70, Issue -, Pages 194-202Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.01.029
Keywords
Copper; Alloy; Galvanostatic; EPMA; High temperature corrosion; Internal oxidation
Funding
- Program of the Ural Division of the Russian Academy of Sciences [12-(sic)-3-2056]
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A Cu82Al8Ni5Fe5 wt.% alloy was evaluated as an inert anode in the electrolysis of an Al2O3-saturated, KF35.6-NaF12-LiF3-(AlF3)(49.4) melt (790 degrees C) for 73 h. It was shown that metal consumption at the alloy/scale interface led to the formation of a ring-like gap that was filled with oxygen-free electrolyte. it was hypothesised that the electrochemical transfer of the alloy components through the gap occurred and the chemical oxidation of the alloy particles after the dissolution-deposition process took place in the scale. It was concluded that the rate of scale formation was governed by the percentage of current that had passed through the gap. (C) 2013 Elsevier Ltd. All rights reserved.
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