Nanocrystalline Processing and Interface Engineering of Si3N4-Based Nanocomposites.
Technical rept. 1 Jul-30 Sep 96,
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING
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Due to its hardness and wear resistance, TiN is potentially very useful in demanding engineering applications. However, due to low sintering activities in microcrystalline powders, TiN has been primarily used as a coating, rather than a monolithic ceramic material. This report outlines processing techniques by which bulk, dense, nanostructured TiN materials may be produced. A valved filter collection device added to a novel forced flow reactor used for synthesizing nanocrystalline TiN powders allows for the collection of these powders without exposing them to air. Subsequent careful powder handling procedures allow the production of dense 99, nanostructured grain size 250 nm TiN through a pressureless sintering process at 1400 deg C. p3
- Laminates and Composite Materials
- Inorganic Chemistry
- Ceramics, Refractories and Glass