Processing of Nanocrystalline Nitrides and Oxide Composites
Abstract
We have examined various synthesis parameters for producing nanocrystalline aluminum nitride and established maps relating surface area and crystallite size to synthesis conditions. Preliminary analysis of the powder compacts and initial sintering studies show a great deal of potential. Green compacts with a very fine average pore size of 5.5 nm were obtained readily. Densities of 96% were achieved without sintering additives after 30 minutes of pressureless sintering at 1900 deg C in flowing nitrogen. We are currently examining sintering behavior at lower temperatures in detail. Future work will also involve chemical and thermal characterization of the sintered ceramics.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1998
- Accession Number
- ADA354431
Entities
People
- Jackie Y. Ying
- Martin L. Panchula
Organizations
- Massachusetts Institute of Technology