Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1987-06-19
1988-05-24
Lechert, Jr., Stephen J.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75230, 419 10, 419 12, 419 13, 419 23, 419 45, 419 48, C22C 2914
Patent
active
047463635
ABSTRACT:
Cermet body formed by reaction sintering at pressures ranging from subatmospheric to superatmospheric of admixed and shaped particulate exothermic reactants, which have maximum particle size substantially not greater than 150 .mu.m and can be elements, compounds, intermetallic compounds and/or alloys, in stoichiometric proportions to substantially form 40-95 mole percent of first phase or phases being boride, nitride, silicide, sulfide or combination thereof of one or more of the elements of Groups 2a, 3a exclusive of B, 4a, 2b, 3b including lanthanide and actinide series elements, 4b, 5b, 6b, 7b and 8, and 5-60 mole percent of second phase or phases being metal, alloy, intermetallic compound or combination thereof of one or more of the elements of Groups 3a exclusive of B, 4a, 2b, 4b, 5b, 6b, 7b, iron, cobalt and nickel, wherein the maximum grain size of the first phase or phases is substantially not greater than 10 .mu.m and which body contains 0 to 4 weight percent oxygen.
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Corning Glass Works
Lechert Jr. Stephen J.
Wardell Richard N.
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