Process for preparing self-supporting bodies and products produc

Details Process for preparing self-supporting bodies and products produc Process for preparing self-supporting bodies and products produc

1989-12-05

1991-05-21

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

75238, 75249, 419 14, 419 17, 419 27, 419 45, B22F 326

Patent

active

050173340

ABSTRACT:
Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron carbide material which may contain one or both of a boron donor material and a carbon donor material. The reactive infiltration typically results in a composite comprising a boron-containing compound, a carbon-containing compound and residual metal, if desired. The mass to be infiltrated may contain one or more inert fillers admixed with the boron carbide material, boron-containing compound and/or carbon-containing compound. The relative amounts of reactants and process conditions may be altered or controlled to yield a body containing varying volume percents of ceramic, metal, ratios of one ceramic to another and porosity.

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