Metal-ceramic materials based on NiFe 2 O 4 and Fe 2 O 3 with additions of copper oxide and transition metals Cu, Ni, Co, and Fe were obtained. Changes in the phase content of materials based on iron oxide were shown, and the electrical conductivity of the obtained composites was studied. Samples of inert anodes were tested in an electrolytic cell; high resistance of cermets NiFe 2 O 4 + Cu, Ni against alumina-cryolite melts and stability of aluminum electrolysis were established.
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Kargin et al. (2018) studied this question.