Abstract
NaClKClTiClxwas prepared via using titanium sponge to reduce titanium tetrachloride in a NaClKCl melt under a negative pressure at 1023 K. The relationship between titanium valence states and [F]/[Ti] molar ratios was investigated with successive adding potassium fluoride in the pre-prepared NaClKClTiClx. It was found that the average valence of titanium ions tended to be stable around 3.0 when [F]/[Ti] molar ratio was greater than 1.80. The equilibrium redox potentials, ETi3+=Ti2+ , ETi4+=Ti3+ , ETi3+=Ti and ETi2+=Ti, were also calculated through the obtained concentration of equilibrium titanium ions with different molar ratios of [F]/[Ti]. Meanwhile, the influence of the fluoride anion on over-potential and characteristics of titanium electrodeposition were investigated through changing the molar ratio of [F]/[Ti]. The results showed that, with the increasing of [F]/[Ti] molar ratios, the grain size of electrodeposition products became smaller, while the over-potential was higher.
| Original language | English |
|---|---|
| Pages (from-to) | 1299-1303 |
| Number of pages | 5 |
| Journal | Materials Transactions |
| Volume | 55 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2014 |
| Externally published | Yes |
Keywords
- Average valence
- Electrodeposition
- Equilibrium constant
- FTi molar ratio
- Redox potential
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering