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Cryolitic vein XPS imaging from an industrial grade carbon |
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| Authors: | Marc-André Coulombe Martin Lebeuf Neal Fairley John Walton Gervais Soucy |
| Institution: | 1. Département de génie chimique et de génie biotechnologique, Université de Sherbrooke, 2500 boul. université, Sherbrooke, Qc J1K2R1, Canada;2. CasaSoftwareLtd, 5 Grosenvor Terrace, Teignmouth, Devon TQ14 8NE, UK;3. Corrosion and Protection Centre, School of Materials, University of Manchester, Manchester M13 9PL, UK |
| Abstract: | Aluminium carbide formation and subsequent dissolution is a generally accepted mechanism to explain the cathode wear in the Hall-Héroult industry. Carbide formation is thought to occur inside the cathode pores. Being dependent upon cathodic current density, it is believed to be an electrochemical process. It is also associated with the presence of cryolitic bath species involved in the dissolution of the carbide layer and thus enabling further carbide formation. |
| Keywords: | XPS imaging Cryolite vein Aluminium electrolysis Principal Component Analysis (PCA) Carburation phenomenon |
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