| Téléchargement | - Voir la version de l’auteur : Cold-sprayed Cu-Ni-Fe anodes for CO₂-free aluminum production (PDF, 399 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1007/s11666-020-01002-z |
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| Auteur | Rechercher : Jucken, Sylvain; Rechercher : Martin, Manuel1; Rechercher : Irissou, Eric1Identifiant ORCID : https://orcid.org/0000-0002-0691-9152; Rechercher : Davis, Boyd; Rechercher : Guay, Daniel; Rechercher : Roué, Lionel |
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| Affiliation | - Conseil national de recherches Canada. Automobile et les transports de surface
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| Format | Texte, Article |
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| Sujet | Al production; Ainert anode; Cu-Ni-Fe alloys; cold spray |
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| Résumé | 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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| Date de publication | 2020-02-28 |
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| Maison d’édition | ASM International |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 77a4c11b-25b3-4850-88cc-5d3ba0436404 |
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| Enregistrement créé | 2020-04-08 |
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| Enregistrement modifié | 2025-07-31 |
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