REFERENCE ELECTRODE OF SIMPLE GALVANIC CELLS FOR DEVELOPING SODIUM SENSORS FOR USE IN MOLTEN ALUMINUM

Authors
ZHANG L FRAY DJ DEKEYSER JC DESCHUTTER F
Citation
L. Zhang et al., REFERENCE ELECTRODE OF SIMPLE GALVANIC CELLS FOR DEVELOPING SODIUM SENSORS FOR USE IN MOLTEN ALUMINUM, Metallurgical and materials transactions. B, Process metallurgy and materials processing science, 27(5), 1996, pp. 794-800
Citations number
22
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
Metallurgical and materials transactions. B, Process metallurgy and materials processing science → ACNP
ISSN journal
10735615
Volume
27
Issue
5
Year of publication
1996
Pages
794 - 800
Database
ISI
SICI code
1073-5615(1996)27:5<794:REOSGC>2.0.ZU;2-C
Abstract
A simple galvanic cell, Na (ref) parallel to sodium beta-A1(2)O(3) par allel to Na (in molten Al), was used in developing electrochemical sen sors determining the sodium content in molten aluminium. A review of p ossible sodium reference electrodes has shown that (alpha- + beta-A1(2 )O(3) + air) and (Fe2O3 + 'Na10Fe16O29' + air) are particularly good c andidates. The reference electrode using ferrite was believed to be mo re rapid in response and was used in sensors tested in 50 kg molten al uminium. At 998 K and with sodium content of 5 to 158 ppm, the perform ance of three sensors is reported.