Mechanically alloyed Cu-Ni-Fe-Y material as inert anode for Al production
In our previous works, we identified the mechanically alloyed Cu65Ni20Fe15 compound as a promising inert anode material for Al production in low temperature (700°C) KF-AIF3 electrolyte. However, further work was required for improving its corrosion resistance. For that purpose, (Cu65 Ni2OFe15)100-xYx materials were prepared by ball milling, consolidated to form dense electrodes and then evaluated as inert anodes for aluminum production. Their morphological, structural and chemical characteristics were studied at different stages of their preparation and after 20 h of electrolysis. The key role played by the element Y on the electrode’s corrosion resistance is highlighted.
Keywordsaluminum electrolysis inert anode Cu-Ni-Fe-Y alloy ball milling low-temperature electrolyte
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- 1.The Aluminum Association of Canada, “2010 Sustainable development report” (2011).Google Scholar
- 2.The Aluminum Association, “Inert Anode Roadmap: A Framework for Technology Development” (Washington, 1998).Google Scholar
- 3.I Galasiu, R. Galasiu and J. Thonstad, “Inert Anodes for Aluminium Electrolysis” (Aluminium-Verlag, Dusseldorf, 2007).Google Scholar
- 4.ASME Technical Working Group, “Inert anode technologies report” (U.S. Department of Energy, Office of Industrial Technologies, Washington, 1999).Google Scholar
- 5.J. Yang, D. Graczyk, C. Wunsch, and J.N. Hryn, “Alumina solubility in KF-AlF3-based low-temperature electrolyte system” Light Metals 2007 (TMS, Warrendale, Pa), 537–541.Google Scholar
- 6.J. Yang, J.N. Hryn, and G.K. Krumdick, “Aluminum electrolysis tests with inert anodes in KF-AlFS-based electrolystes” Light Metals 2006 (TMS, Warrendale, Pa), 421–424Google Scholar
- 7.J. Yang, J. N. Hryn, B. R. Davis, A. Roy, G. K. Krumdick and J. A. Pomykala Jr, “New Opportunities for Aluminum Electrolysis with Metal Anodes in a Low Temperature Electrolyte System” Light Metals 2004 (TMS, Warrendale, Pa), 321–326.Google Scholar
- 8.T.R. Beck, and R.J. Brooks “Non-consumable anode and lining for aluminium electrolytic reduction cell” US patent 5,284,562 (1994).Google Scholar