Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1986-09-16
1989-07-11
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
501 94, 501127, 501153, 264 57, 264 65, 264 451, C04B 3502
Patent
active
048470252
ABSTRACT:
A method is provided for producing a self-supporting ceramic body comprising a polycrystalline material comprised of the oxidation reaction product of a parent metal and having therein one or more channels which inversely replicate the geometry of a configured fugitive metal. The method includes providing an assembly of the configured fugitive metal and the parent metal, optionally including a bed of permeable filler, and heating the assembly to form a body of molten parent metal. The molten parent metal is oxidized under selected conditions to grow the polycrystalline material to engulf the configured fugitive metal (and to infiltrate the filler, if the filler is present) and to cause the fugitive metal to disperse into the engulfing polycrystalline material thereby leaving behind as the one or more channels the space formerly occupied by the configured fugitive metal. The method provides self-supporting ceramic bodies having therein one or more channels inversely replicating the shape of the configured fugitive metal.
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Aghajanian Michael K.
White Danny R.
Boyer Michael K.
Dixon Jr. William R.
Griffis Andrew
Lanxide Technology Company, LP
Mortenson Mark G.
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