Fabrication and Characterization of Three-Dimensional Carbon Fiber Reinforced Silicon Carbide and Silicon Nitride Composites |
| |
| Authors: | Kikuo Nakano Akira Kamiya Yoichi Nishino Toru Imura Tsu-Wei Chou |
| |
| Affiliation: | National Industrial Research Institute, Nagoya, Japan, Nagoya Institute of Technology, Nagoya, Japan, Aichi Institute of Technology, Toyota, Japan, University of Delaware, Newark, Delaware 19716 |
| |
| Abstract: | Three-dimensional (3D) carbon fiber reinforced SiC and Si3N4 composites have been fabricated using repeated infiltration of an organosilicon slurry under vacuum and pressure. Open porosity of the infiltrated body was reduced from 40% after the first infiltration to approximately 8% after the seventh cycle. Further reduction of open porosity to less than 3% was accomplished by hot-press densification. The maximum values of flexural strength and fracture toughness were, respectively, 260 MPa and 7.3 MPa·m1/2for C/Si3N4 composites, and 185 MPa and 6 MPa·m1/2 for C/SiC composite. |
| |
| Keywords: | |
|
|
