Compositions: ceramic – Ceramic compositions – Refractory
Patent
1989-12-12
1990-12-18
Lechert, Jr., Stephen J.
Compositions: ceramic
Ceramic compositions
Refractory
420590, 148316, 148317, 264332, C04B 3458
Patent
active
049786440
ABSTRACT:
Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron nitride material typically resulting in a body comprising a boron-containing compound, a nitrogen-containing compound and metal. The mass to be infiltrated may contain one or more inert fillers admixed with the boron nitride, to produce a composite by reactive infiltration, which composite comprises a matrix which embeds the filler material. The matrix, in a composite body containing filler material, comprises one or more of metal, a boron-containing compound and a nitrogen-containing compound. The relative amounts of reactants and process conditions may by altered or controlled to yield a body containing varying volume percents of ceramic, metal and/or porosity. The mass to be infiltrated can be contained within a refractory vessel having a venting means included therein.
REFERENCES:
patent: 4353714 (1982-10-01), Lee et al.
patent: 4793968 (1988-12-01), Mosser et al.
patent: 4885130 (1989-12-01), Claar et al.
patent: 4885131 (1989-12-01), Newkirk
patent: 4904446 (1990-02-01), White et al.
patent: 4915736 (1990-04-01), Claar et al.
Claar Terry D.
White Danny R.
Boyer Michael K.
Lanxide Technology Company, LP
Lechert Jr. Stephen J.
Mortenson Mark G.
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