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

Abstract:

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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 CaF2-CaO-TiO2 bath, and electrolysis by using a new type of the electrolytic cell was also tried. Ti-Al alloy was successfully deposited in a CaF2-CaO-TiO2-Al2O3 bath, whereas Ti-Si alloy was not obtained in a CaF2-CaO-TiO2-SiO2 bath yet. Ti-Fe alloy was extracted in CaF2-CaO-TiO2-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.

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Periodical:

Edited by:

M. Ashraf Imam, F. H. Froes, Kevin F. Dring

Pages:

85-91

DOI:

10.4028/www.scientific.net/KEM.436.85

Citation:

T. Takenaka et al., "High Temperature Electrolysis of Ti and its Alloys with a DC-ESR Unit", Key Engineering Materials, Vol. 436, pp. 85-91, 2010

Online since:

May 2010

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