Reaction sintered multiphase ceramic
A reaction sintered multiphase ceramic body consisting essentially of a fine-grained, homogeneous, intimate interdispersion of: (a) 5-95 mole percent of nitride phase or phases having a maximum grain size substantially not greater than 10 ..mu..m and being nitride of one or both of Al and Si, and (b) 5-95 mole percent of second phase or phases having a maximum grain size substantially not greater than 10..mu..m and being boride, carbide, silicide, sulfide or combination thereof of one or more of the elements of Groups 3b including lanthanide and actinide series elements, 4b, 5b and 6b; which body contains 0 to 4 weight percent oxygen and is prepared by the process comprising; (c) admixing particulate reactants of maximum particle size substantially not greater than 150 ..mu..m and being elements, compounds, intermetallic compounds, alloys or combination thereof in stoichiometric proportions to substantially form the nitride and second phases, and (d) shaping and heating the admixture to form the reaction sintered body, the heating being done in atmosphere that is nonreactive with the admixture and at temperature at which the reaction and sintering occurs between the reactants to substantially form the nitride and second phases.
- Assignee:
- Corning Glass Works, Corning, NY
- Patent Number(s):
- US 4605633
- OSTI ID:
- 5348657
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ACTINIDES
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM NITRIDES
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CRYSTAL STRUCTURE
ELEMENTS
FABRICATION
GRAIN SIZE
HEATING
INTERMETALLIC COMPOUNDS
KINETICS
MATERIALS
METALS
MICROSTRUCTURE
MIXING
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
OXYGEN
PARTICLE SIZE
PARTICLES
PARTICULATES
PNICTIDES
QUANTITY RATIO
RARE EARTH COMPOUNDS
REACTION KINETICS
SILICIDES
SILICON COMPOUNDS
SILICON NITRIDES
SINTERED MATERIALS
SINTERING
SIZE
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE