Highly Oriented Fiber Reinforced Ceramic Composites
Abstract
Highly dense SiC-AlN alloys having unique microstructures and a fracture toughness up to 6 MPam 1/2 were successfully produced by pressureless sintering of commercially available SiC and AlN powders. Appropriate sintering aids, sintering temperatures, sintering period and sintering conditions were identified. The sintered SiC-AlN alloys can achieve a single phase solid solution after an appropriate thermal treatment. The lattice constants of the solid solution varied linearly with SiC/AlN ratio. Optimized annealing yielded decomposition of the solid solution and formed a unique microstructure, which was composed of equiaxed grains with modulated features, heavily faulted elongated grains and very clean grain boundaries. Ceramic composites, Aluminum nitride, Silicon carbide.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1989
- Accession Number
- ADA208119
Entities
People
- Frances Schutzberg
- James D. Hodge
- John Halloran
- Ran-rong Lee
- Wen-cheng J. Wei