About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Engineering Ceramics: Microstructure-Property-Performance Relations and Applications
|
| Presentation Title |
Effect of microstructure on the mechanical properties of reaction-bonded SiC-B4C composites |
| Author(s) |
Dongwook Kim, Hui Jung Kim, Young-Wook Kim, Woohyuk Choi, Sungmin So |
| On-Site Speaker (Planned) |
Young-Wook Kim |
| Abstract Scope |
The size and content of free Si influences the mechanical properties of reaction-bonded SiC and reaction-bonded B4C ceramics. Eight different microstructures in SiC-B4C composites were prepared by reaction bonding process and subsequent annealing. Two strategies for developing SiC-B4C composites with tailored microstructures were explored, focusing on the size of free Si and free Si content. The size of free Si in the microstructure of reaction-bonded SiC-B4C composites could be controlled by adjusting the sizes of starting SiC and B4C particles and the free Si content could be controlled by adjusting the green density of SiC-B4C preforms. The mechanical and thermal properties of reaction-bonded SiC-B4C composites were characterized and the relationships between microstructure and both properties will be presented. The present results suggest that improved mechanical properties of reaction-bonded SiC-B4C composites can be achieved by judicious selection of starting particle sizes and green density of preforms.
This work was supported by a grant from the Korea Research Institute for Defense Technology Planning and Advancement (Project No. 24FS02, “Development of ultra-light ceramic personal bulletproof plate fabrication technology”) under the Defense Science and Technology Innovation Promotion Act. |