About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
|
Symposium
|
12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
|
Presentation Title |
Oxide Films Formed on MoSi2 Anode in Molten MgCl2-NaCl-CaCl2 and Molten LiCl-KCl |
Author(s) |
Takamasa Miyoshi, Taiki Morishige, Toshihide Takenaka |
On-Site Speaker (Planned) |
Takamasa Miyoshi |
Abstract Scope |
The anodic behavior of MoSi2 in molten MgCl2−NaCl−CaCl2 containing oxide ions has been investigated in this study to aim at developing an inert anode in this melt. A sharp anodic current peak appeared around 1.8V (vs. Mg / Mg2+) in a cyclic voltammogram, which suggested that MoSi2 was passivated in the melt with oxide ions. Potentio−static electrolysis was performed at various potentials nobler than the passivation potential. Oxide film was formed on MoSi2 by potentio−static electrolysis regardless of electrolysis potential. The current contributions assuming the dissolution of Mo and the formation of oxide film are estimated from the weight change and the film thickness after the potentio−static electrolysis. The formation of oxide film and its influence in molten MgCl2−NaCl−CaCl2 are compared with those in molten LiCl−KCl, and the suitable condition to form better protection film is discussed. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |