ELECTROCHEMICAL REDUCTION OF TANTALUM IN MOLTEN FLUORIDES

Authors
POLYAKOVA LP BUKATOVA GA POLYAKOV EG
Citation
Lp. Polyakova et al., ELECTROCHEMICAL REDUCTION OF TANTALUM IN MOLTEN FLUORIDES, Russian journal of electrochemistry, 29(11), 1993, pp. 1161-1164
Citations number
15
Categorie Soggetti
Electrochemistry
Journal title
Russian journal of electrochemistry → ACNP
ISSN journal
10231935
Volume
29
Issue
11
Year of publication
1993
Pages
1161 - 1164
Database
ISI
SICI code
1023-1935(1993)29:11<1161:EROTIM>2.0.ZU;2-H
Abstract
The electrochemical behavior of tantalum in the FLINAK-K2TaF7 Melt is studied by the linear sweep voltammetry method. Within the temperature range from 845 to 1088 K Ta(V) ions can be reduced to metal in one st age; at polarization rates below 0.5 V/s, the process proceeds quasi-r eversibly. At higher rates it is irreversible. Within the studied temp erature range the diffusion coefficient of Ta(V) ions varies from 1.12 to 3.70 x 10(-5) cm2/s; the diffusion activation energy is 39.1 kJ/mo l.