Abstract
Calcia-alumina (CA) glass-ceramic was studied as a candidate low-activation joining and sealing material for SiC/ SiC components for fusion blanket and diverter structures, in terms of microstructural stability and mechanical properties. The CA glass-ceramic joining and seal coating were applied to the Hi-Nicalon™ SiC fiber-reinforced SiC matrix composites in which the matrix had been formed through chemical vapor infiltration and polymer impregnation and pyrolysis methods. Microstructural characterization was carried out for the joined and coated materials by optical and scanning electron microscopy (SEM). The mechanical property of the joint was evaluated through a shear test on sandwich joints. The average shear strength of the joined structures was 28 MPa at room temperature. Fractography revealed that the fracture occurred in the glass phase and the shear strength may be improved by reduction of the glass fraction.
| Original language | English |
|---|---|
| Pages (from-to) | 1262-1266 |
| Number of pages | 5 |
| Journal | Journal of Nuclear Materials |
| Volume | 283-287 |
| Issue number | PART II |
| DOIs | |
| State | Published - 2000 |
| Externally published | Yes |
Funding
The authors would like to thank Drs Tetsuji Noda and Hiroshi Araki at the National Research Institute of Metals for the CVI processing. The Hi-Nicalon™ fibers used in this work was provided by Nippon Carbon Co., Ltd. This work was performed under the Agreement for Scientific Cooperation between Materials Science and Chemical Engineering Department, Polytechnic of Torino (Italy) and Institute of Advanced Energy, Kyoto University (Japan).
| Funders | Funder number |
|---|---|
| Kyoto University | |
| Institute of Advanced Energy, Kyoto University | |
| Agreement for Scientific Cooperation between Materials Science and Chemical Engineering Department, Polytechnic of Torino |
