Densification and Mechanical Properties of Si3N4/SiC Nanocomposite Using Si-Nitrided Si3N4 Powder
β Scribed by J.-F. Yang; Y.-H. Choa; T. Sekino; K. Niihara
- Book ID
- 110238891
- Publisher
- Springer
- Year
- 1999
- Tongue
- English
- Weight
- 126 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0261-8028
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Studies of pressureless sintering of Si3N 4 based matrices and Si3N4-SiC composites in the Y-Si-A1-O-N and Hf-Y-Si-A1-O-N additive systems have been carried out. Mechanical testing indicated that matrices had higher hardness and higher flexural strength than composites. Composites had higher fractur
SiC/Si 3 N 4 nanocomposites were prepared with carbon black and β£-Si 3 N 4 powders by hot-pressed method. The microstructure, phase composition, dielectric and mechanical properties of the nanocomposites were investigated. The relative densities of SiC/Si 3 N 4 nanocomposites decreased from 99 to 86