Titanium diboride-graphite composits
AssigneeGreat Lakes Carbon Corporation
InventorsLouis A. Joo', Kenneth W. Tucker, Frank E. McCown
Life of this patent
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Abstract
A cathode component for a Hall aluminum cell is economically produced from a mixture of a carbon source, preferably calcined petroleum coke, and optionally calcined acicular needle petroleum coke, calcined anthracite coal; a binder such as pitch including the various petroleum and coal tar pitches; titanium dioxide, TiO.sub.2 ; and boric acid, B.sub.2 O.sub.3 or boron carbide, B.sub.4 C; forming said mixture into shapes and heating to a TiB.sub.2 -forming temperature.
Claims3
A process for the production of TiB.sub.2 -carbon composite comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB.sub.2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article at 700.degree. to 1100.degree. C., impregnating said baked article with a carbon-forming binder and rebaking said article to 700.degree. to 1100.degree. C.
A process for the production of a TiB.sub.2 -carbon composite article comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB.sub.2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article to 700.degree. to 1100.degree. C., heating said article to a TiB.sub.2 -forming temperature from 2000.degree. to 3000.degree. C. wherein the composite article is impregnated with a carbon-forming binder and is re-baked to 700.degree. to 1100.degree. C.
A process for the production of a TiB.sub.2 -carbon composite article comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB.sub.2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article to 700.degree. to 1100.degree. C., further heating said article to a TiB.sub.2 -forming temperature of 2000.degree. to 3000.degree. C. wherein the composite article is then impregnated with a carbon-forming binder, re-baked to 700.degree. to 1100.degree. C. and re-heated to 2000.degree. to 3000.degree. C.
Dependencies are inferred from the claim text.