The Effect of the Fe²⁺_B/Fe³⁺_B Ratio on Electric Conductivity and Corrosion Resistance of Anodes

Abstract:

The effect of the Fe²⁺_B/Fe³⁺_B ratio (the ratio of divalent and trivalent iron ion in B position of the inverse spinel structure) in cermets on the electric conductivity and corrosion resistance of anodes was investigated. The experimental results showed that both the electrical conductivity and corrosion resistance are proportional to the Fe²⁺_B/Fe³⁺_B ratio on the surface of anodes because FeAl₂O₄ and NiAl₂O₄ are produced on the surface of the anode and Fe³⁺ in the NiFe₂O₄ is corroded preferentially during electrolysis.

• Periodical: Materials Science Forum (Volume 896)
• Pages: 72-77
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.896.72
• Online since: March 2017
• Authors: Han Bing He*, Yuan Wang, Pei Yu Huang, Xu Peng Niu
• Keywords: Aluminum Electrolysis, Corrosion Resistance, Electric Conductivity, Fe²⁺_B/Fe³⁺_B Ratio

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