Dependence of Reduction Behavior of Ti in Molten CaCl2 on Various Calcium Titanate

作者：Okada Haruka; Shimokawa Kakeru; Morishige Taiki; Takenaka Toshihide^*

来源：Materials Transactions, 2018, 59(4): 690-693.

DOI：10.2320/matertrans.MBW201702

• titanium
• calcium titanate
• calcium chloride
• molten salt
• solubility
• electrolysis

The change in TiO2 solubility in molten CaCl2 at 1573K with CaO addition was studied to clarify the influence of CaO on TiO2 dissolution. The solubility of TiO2 in molten CaCl2 remarkably enlarged with CaO addition, which suggests that a titanate ion (TixOy (Z-)) was preferentially formed in it. The cathodic behavior in molten CaCl2 containing various species of calcium titanate at 1373-1573K was investigated by cyclic voltammetry, and electrodeposition of Ti metal was attempted by potentio-static electrolysis. The reduction behavior was affected by the species of calcium titanate, and the components in the deposit changed consequently. These results indicate that the reduction behavior of Ti was strongly influenced by the species of titanate ion, and that the bath consisting of Ca3Ti2O7 is found suitable.

• 出版日期2018