Composite of tib.sub.2-graphite

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

C - Chemistry, Metallurgy

25

C

204/198, 18/2

C25C 7/02 (2006.01) C04B 35/52 (2006.01) C04B 35/58 (2006.01) C25C 3/08 (2006.01)

Patent

CA 1189659

COMPOSITE OF TiB2 -GRAPHITE Abstract TiB2-graphite composite articles suitable for use as cathode components in all Hall aluminum reduction cell are made by impregnating a TiO2-carbon composite with a boron compound and carbon black dis- persed in water, or alternately by impregnating a boron or boron com- pound-carbon composite with a carbon black-TiO2 dispersion, and heating the article to a reaction temperature whereby TiB2 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.

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