Influence of operating conditions on cermet inert anode corrosion in cryolite for aluminium production
نویسندگان
چکیده
A (NixFeyO4–Ni1?x?Fex’O)/(Cux?’Niy’’) cermet candidate as inert anode was investigated in cryolite at 960 °C. Immersion tests were performed and different conditions tested: ratio, alumina content, electrolyte quality, metallic aluminium content atmosphere. Then, electrolysis realised 0.8 cm-2 for 4 h industrial conditions: grade electrolyte, CR 2.2, saturated Al2O3, °C presence of Al. The initial material composition still present the bulk phases compositions oxidised zone are Ni0.90Fe2.10O4 Ni0.90Fe0.10O, observed during immersion tests. phase is partly oxidised, leading to porosity cermet.
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ژورنال
عنوان ژورنال: Corrosion Science
سال: 2021
ISSN: ['1879-0496', '0010-938X']
DOI: https://doi.org/10.1016/j.corsci.2021.109773