Grained composite materials prepared by combustion synthesis under mechanical pressure
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsStephen D. Dunmead, Joseph B. Holt, Donald D. Kingman, Zuhair A. Munir
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Abstract
Dense, finely grained composite materials comprising one or more ceramic phase or phase and one or more metallic and/or intermetallic phase or phases are produced by combustion synthesis. Spherical ceramic grains are homogeneously dispersed within the matrix. Methods are provided, which include the step of applying mechanical pressure during or immediately after ignition, by which the microstructures in the resulting composites can be controllably selected.
Claims14
A composition of matter, comprising a dense composite material which comprises one or more finely grained ceramic phase or phases and one or more intermetallic phases wherein:
- (a) the ceramic phase or phases is or are selected from the group consisting of TiC, TiB, TiB.sub.2, ZrC, ZrB.sub.2, HfC, HfB.sub.2, TaC, TaB.sub.2, NbC, NbB.sub.2, SiC and B.sub.4 C;
- and wherein
- (b) the intermetallic phase or phases is or are selected from the group consisting of nickel aluminides, titanium aluminides, copper aluminides, titanium nickelides, titanium ferrides, and cobalt titanides.
Dependencies are inferred from the claim text.