FABRICATION OF DENSE FINE GRAINED CERAMIC MATERIALS
Final rept. Aug 1965 - August 1966
MANLABS INC CAMBRIDGE MA
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High pressure hot pressing was used to prepare dense, crack free billets of boron carbide, silicon carbide, titanium carbide and titanium nitride. These materials were fabricated from high purity powders without the additions of densification promoters. Fabrications were generally performed in the vicinity of 1800C at 120,000 psi for 10 minutes. Reactive high pressure hot pressing of boron carbide and elemental boron carbide was investigated with different atomic ratios of boron to carbon. Microstructures and mechanical property evaluations were obtained for selected materials prepared by this technique. The results obtained for high pressure hot pressed boron carbide and silicon carbide materials were compared with results of similar evaluation performed on conventionally fabricated samples of boron carbide and silicon carbide.
- Ceramics, Refractories and Glass
- Fabrication Metallurgy