Composite of TiB.sub.2 -graphite

Details Composite of TiB.sub.2 -graphite Composite of TiB.sub.2 -graphite

1981-07-27

1984-08-14

Edmundson, F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204291, 423289, 4271261, C25B 1104

Patent

active

044655819

ABSTRACT:
TiB.sub.2 -graphite composite articles suitable for use as cathode components in a Hall aluminum reduction cell are made by impregnating a TiO.sub.2 -carbon composite with a boron compound and carbon black dispersed in water, or alternately by impregnating a boron or boron compound-carbon composite with a carbon black-TiO.sub.2 dispersion, and heating the article to a reaction temperature whereby TiB.sub.2 is formed and the amorphous carbon converted to graphite. The article may be impregnated with a carbonizable liquid, re-baked, and re-heated to a graphitizing temperature to increase its strength and density.

REFERENCES:
patent: 2915442 (1959-12-01), Lewis
patent: 3028324 (1962-04-01), Ransley
patent: 3151053 (1964-09-01), Lewis
patent: 3156639 (1964-11-01), Kibby
patent: 3314876 (1967-04-01), Ransley
patent: 3400061 (1968-09-01), Lewis
patent: 3676371 (1972-07-01), Zollner et al.
patent: 4071420 (1978-01-01), Foster
Billehaug, K. et al., "Inert Cathodes for Aluminium Electrolysis in Hall-Heroult Cells", Aluminium. vol. 56, (1980), pp. 642-648, and 713-718.

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