Abstract
NiFe2O4-based cermet inert anodes with metallic phase compositions of Cu, Ni and 85Cu15Ni were prepared by cold pressing-sintering. Their corrosion resistance was also investigated in Na3AlF6-Al2O3 melts. The results show that the metallic phase species in cermets have no effect on the concentration of impurities in bath during electrolysis, the total steady-state concentration of impurities is almost the same, i. e. between 4.12×10−4−4.80×10−4. There exists metal preferential corrosion for the cermet inert anode with metal Ni as metallic phase. For NiFe2O4-based cermets, the cermet with metal Cu as metallic phase exhibits better corrosion resistance than the others.
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Foundation item: Project(2005CB623703) supported by the National Basic Research Program of China; project(03JJY3080) supported by the Hunan Provincial Natural Science Foundation
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Lai, Yq., Li, Xz., Li, J. et al. Effect of metallic phase species on the corrosion resistance of 17M/(10NiO-NiFe2O4) cermet inert anode of aluminum electrolysis. J Cent. South Univ. Technol. 13, 214–218 (2006). https://doi.org/10.1007/s11771-006-0128-z
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DOI: https://doi.org/10.1007/s11771-006-0128-z