| Download | - View author's version: Cold-sprayed Cu-Ni-Fe anodes for CO₂-free aluminum production (PDF, 370 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1007/s11666-020-01002-z |
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| Author | Search for: Jucken, Sylvain; Search for: Martin, Manuel1; Search for: Irissou, Eric1; Search for: Davis, Boyd; Search for: Guay, Danie; Search for: Roué, Lionel |
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| Affiliation | - National Research Council of Canada. Automotive and Surface Transportation
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| Format | Text, Article |
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| Subject | Al production; Ainert anode; Cu-Ni-Fe alloys; cold spray |
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| Abstract | Cu-Ni-Fe-coated and bare aluminum bronze materials are evaluated as O2-evolving anodes for Al production in low-temperature (700 °C) potassium-based cryolite. The Cu-Ni-Fe coating (~ 0.8 mm thick) is obtained by cold spraying of mechanically alloyed Cu65Ni20Fe15 (wt.%) powder and presents a biphase Cu-rich/Ni-Fe-rich structure. The composition and morphology of the scale formed on both anodes are characterized after different electrolysis times (3 to 50 h). In both cases, the formed surface oxide is porous with significant electrolyte infiltration. However, for the Cu-Ni-Fe-coated anode, there is formation of an inner NiFe2O4-rich layer limiting the outward Cu diffusion at the anode surface. As a result after 50 h of electrolysis, a lower anode wear rate (0.37 versus 3.8 cm year−1) and a higher produced Al purity (98.8 versus 95.4 wt.%) are observed with the Cu-Ni-Fe-coated anode compared to the uncoated aluminum bronze anode. |
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| Publication date | 2020-02-28 |
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| Publisher | ASM International |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 77a4c11b-25b3-4850-88cc-5d3ba0436404 |
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| Record created | 2020-04-08 |
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| Record modified | 2020-06-30 |
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