The Ion Structure of NiFe2O4-10NiO-Based Cermet Anode in the Electrolyte
| Autor: | Han Bing He, Yuan Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Aluminum electrolysis 020502 materials Mechanical Engineering Metallurgy 02 engineering and technology Electrolyte Cermet 021001 nanoscience & nanotechnology Condensed Matter Physics Corrosion Anode Ion 0205 materials engineering Mechanics of Materials General Materials Science 0210 nano-technology |
| Zdroj: | Materials Science Forum. 921:119-127 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.921.119 |
| Popis: | The problem in the large-scale industrialization for aluminum electrolysis is the corrosion resistance of cermet inert anodes in high temperature molten salts. In this paper, the ion structure of NiFe2O4-10NiO-based cermet anode composition in the electrolyte was investigated. The experiment results show that Al-F and Al-O-F complex ion structures are produced at room temperature and perhaps Me-F (Me=Ni, Cu, Fe), Me-O-F or Me-Al-O-F are also formed. Moreover, Al-F and Al-O-F ion structures exist from room temperature to 700 °C and from 1050 °C to 1200 °C; In the rearrangement and melting process of molten salt at 800 °C -1000 °C, the ionic structures are mainly Al-O-F ions; Me-F and Me-O-F ion structures were not found at high temperature, this indicates that Al in Al-O-F complex ion structures is partially replaced by Fe, Ni or Cu to form MexAlaOyFz(z+2y-2x-3a)-. |
| Databáze: | OpenAIRE |
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