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On the migration of dissolved aluminium in NaFAlF3Al2O3melts

Authors
Journal
Electrochimica Acta
0013-4686
Publisher
Elsevier
Publication Date
Volume
25
Issue
2
Identifiers
DOI: 10.1016/0013-4686(80)80047-8

Abstract

Abstract Aluminium dissolved in cryolite-alumina melts migrates in the direction of the positive pole by passage of current. By a modified moving boundary technique the dissolved metal was found to separate into two zones with different mobilities. For the cryolite composition at 1000°C the apparent mobilities were approx 21× 10 −4 and 3× 10 −4 cm s −1/V cm −1. The mobilities increased strongly with increasing temperature and increasing NaF/AlF 3 ratio.

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