| Titre : | Electrochemical synthesis of a biomedically important Co–Cr alloy (2011) |
| Auteurs : | D.J.S. Hyslop, Auteur ; A. M. Abdelkader, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 8, Mai 2010) |
| Article en page(s) : | pp. 3124–3130 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Tags : | Electro-deoxidation FFC-Cambridge Process Co–Cr |
| Résumé : | Co–30 wt.% Cr alloy was prepared by electro-deoxidation in molten calcium chloride at 1123 K. A preliminary study was conducted into the preparation of the mixture of the Co3O4 and Cr2O3 and the formation of the non-stoichiometric, spinel structured, mixed oxide nominally labeled CoxCryO4. Constant voltage chronoamperometry was used both to prepare the alloy and to investigate its mechanism of formation. Electro-deoxidation proceeds by the simultaneous rapid reduction of CoO to Co and the slower reduction/substitution of CoxCryO4 to CaCr2O4 and Co metal. The final step of the electro-deoxidation is the reduction of CaCr2O4 to Cr metal, which alloys with the Co metal, and release of Ca2+ back into the electrolyte. |
| DEWEY : | 669 |
| ISSN : | 1359-6454 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S1359645410000832 |
