Cold sprayed Cu-Ni-Fe anode for Al production

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DOIResolve DOI: http://doi.org/10.1016/j.corsci.2014.10.021
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TypeArticle
Journal titleCorrosion Science
ISSN0010-938X
Volume90
Pages259265; # of pages: 7
SubjectAlloys; Crystallite size; Electrodes; Electrolysis; Electrolytes; Mechanical alloying; Cold spray deposition; Cold spray processing; Electrical conductivity; Electrochemical characterizations; Galvanostatics; High temperature corrosions; Mechanical alloyed; Potassium cryolites; Aluminum
AbstractInert anodes for Al electrolysis were produced by cold spray deposition of mechanical alloyed 65Cu20Ni15Fe powder. No structural change of the 65Cu20Ni15Fe alloy was observed during the cold spray processing apart from a small crystallite size increase. The electrochemical characterization was performed at 700°C in a potassium cryolite-based electrolyte. A progressive increase of the cell voltage was observed during the 50h of electrolysis. This is thought to reflect a decrease of the electrical conductivity of the anode attributed to the accumulation of electrolyte at the oxide/alloy interface and to the formation of insulating FeF2 precipitates in the bulk alloy.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationAutomotive and Surface Transportation; National Research Council Canada
Peer reviewedYes
NPARC number21275752
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Record identifiere2737ae5-6e96-49a9-a4f6-77a5d2cb34d1
Record created2015-07-14
Record modified2016-05-09
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