Relationship between architecture, flexural strength, and work of fracture for fibrous monolithic ceramics
- Advanced Ceramics Research, Inc., Tucson, AZ (United States); and others
Various microarchitectures of fibrous monolithic ceramics were fabricated in the Si{sub 3}N{sub 4}/BN system. The microstructure consists of high-aspect-ratio polycrystalline cells of Si{sub 3}N{sub 4} separated by cell boundaries of BN. Cell boundaries were arranged in several different microarchitectures: uniaxial layup, biaxial layup, biwoven fabric, and chopped fiber. All types of fibrous monolith microarchitectures fail non-catastrophically in four-point flexure. Architecture - mechanical behavior map, presenting the relationship between specimen architecture and its position on the strength vs. work-of-fracture diagram is shown, and an attempt is made to give basic explanation of the observed properties.
- OSTI ID:
- 175569
- Report Number(s):
- CONF-9501103--; CNN: Contract N00014-93-1-0302
- Country of Publication:
- United States
- Language:
- English
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