Titanium diboride-graphite composites

Details Titanium diboride-graphite composites Titanium diboride-graphite composites

Filed on

1981-07-27

Date issued

1984-03-27

Examiner

Lusignan, Michael R.

Patent Class

Plastic and nonmetallic article shaping or treating: processes

SubClass

Carbonizing to form article

SubSubClass

With carbonizing, then adding carbonizable material and...

Other Related Categories

264 296, 264 60, 264 63, 427113, 427294, 427226, 427227, 427399, 204294, 204 67, C25B 1104, C25C 312

Type

Patent

Status

active

Patent number

044393822

Description

ABSTRACT:
Titanium diboride graphite composite articles are produced by mixing TiO.sub.2, petroleum coke and a binder to form a plastic dispersion. Articles are shaped by molding or extrusion and baked to carbonize the binder to form a baked carbon-TiO.sub.2 composite. The article is impregnated with a molten or dispersed boron compound, then heated to drive TiB.sub.2 forming reaction. The article is then further heated to a graphitizing temperature to form a graphite-TiB.sub.2 composite useful as a cathode component in a Hall aluminum reduction cell.

REFERENCES:
patent: T993002 (1979-05-01), Kaplan
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 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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