首页|High Temperature Electrolysis of Ti and Its Alloys with a DC-ESR Unit

High Temperature Electrolysis of Ti and Its Alloys with a DC-ESR Unit

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Direct electrolysis of Ti and its alloys has been attempted by the process using a DC-ESR unit. The concept of the process is explained in detail, and the expected key issues are commented. Liquid Ti metal was obtained in a CaF_2-CaO-TiO_2 bath, and electrolysis by using a new type of the electrolytic cell was also tried. Ti-Al alloy was successfully deposited in a CaF_2-CaO-TiO_2-Al_2O_3 bath, whereas Ti-Si alloy was not obtained in a CaF_2-CaO-TiO_2-SiO_2 bath yet. Ti-Fe alloy was extracted in CaF_2-CaO-TiO_2-FeO bath of a particular composition. A common correlation between the cathodic current efficiency and the average consumed electric power seen in the Ti, Ti-Al and Ti-Fe electrolysis suggested the importance of sufficient temperature in the process. The bath composition also affected the temperature through the change in the electric conductivity of the bath.

TiTi-AlTi-FeelectrolysisESRmolten salt

Toshihide Takenaka、Hidetaka Matsuo、Mitsuru Sugawara、Masahiro Kawakami

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Toyohashi University of Technology, Tempaku-cho, Toyohashi 441-8580, Japan

2010

Key engineering materials

Key engineering materials

ISSN:1013-9826
年,卷(期):2010.436
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