Silicon Carbide Alloys.
Abstract
SIC-AlN ceramics are fabricated by hot pressing a powder derived from carbothermal reduction of silica and alumina in nitrogen atm. Densities were greater than 99% theoretical. At high temp. a complete solid solution exists but at a low temp. (below approx. 1800 C) phase separation occurs by (i) Nucleation and growth, (ii) Cellular, and (iii) Spinodal mechanism. This indicates that a miscibility gap exists. Thermal conductivity, expansion coefficient, strength, fracture toughness and Youngs modulus were determined. Extensive electron microscopy was conducted.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 28, 1983
- Accession Number
- ADA125968
Entities
People
- Anil V. Virkar
- M. R. Plichta
- W. Rafaniello
Organizations
- University of Utah