Microstructure Development During Microwave Annealing of Dense Silicon Nitride,
Abstract
Microwave annealing of dense silicon nitride-based ceramics can result in substantial SiO volatilization from the grain boundary phases and compositional changes of those phases. It also results in further alpha-to-beta Si3N4 transformation accompanied by grain growth. These changes occur at bulk temperatures well below comparable observations in conventional heating. The differences are believed due to enhanced diffusion within the intergranular phases.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 27, 1992
- Accession Number
- ADP007754
Entities
People
- C. M. Hubbard
- J. O. Kiggans
- Karren L. More
- M. K. Ferber
- T. N. Tiegs
Organizations
- Oak Ridge National Laboratory