Electronic conduction in cryolite-alumina melts
✍ Scribed by G.M. Haarberg; J. Thonstad; J.J. Egan; R. Oblakowski; S. Pietrzyk
- Book ID
- 112008987
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1998
- Tongue
- English
- Weight
- 440 KB
- Volume
- 102
- Category
- Article
- ISSN
- 0372-8323
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## Abstract The anodic behaviour of silver was investigated in cryolite—alumina-based melt. Silver has a lower melting point (ca. 960°C) than the other metals considered as possible inert materials for aluminium electrolysis. The working temperature used in aluminium industry is approximately 960°C
The equilibrium potential of the cell Alup 1 NatiF, + A1808c,t, 1 Pt, 0, was determined from potential-decay curves to be 2.205 V at 1000°C. A Tafel plot of the anodic overvoltage. shows two straight portions with slopes RT/3F and RT/F, indicating a two-step discharge reaction of oxygen, with exchan