Acknowledgement
This work was supported by the Technology Innovation Program (10067558, Development of functional watches with ceramic composite) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea)
Journal of Ceramic Processing Research
- Volume 21
- /
- Pages.16-22
- /
- 2020
- /
- 1229-9162(pISSN)
- /
- 2672-152X(eISSN)
DOI QR Code
Mechanical properties and electrical resistivity of SiC-TiC composites with nitrate sintering additives
- Sung Min So (Korea Institute of Ceramic Engineering and Technology) ;
- Hee Woong Hwang (Korea Institute of Ceramic Engineering and Technology) ;
- Sam Heang Yi (Korea Institute of Ceramic Engineering and Technology) ;
- Joo Seok Park (Korea Institute of Ceramic Engineering and Technology) ;
- Kyoung Hun Kim (Korea Institute of Ceramic Engineering and Technology) ;
- Kwang Ho Lee (Booil Technology co., Ltd.) ;
- Jongee Park (Department of Metallurgical and Materials Engineering, ATILIM University) ;
- Sung Gap Lee (Ceramic Engineering Department, Gyougsang National University)
- Received : 2019.12.17
- Accepted : 2020.03.24
- Published : 20200000
Abstract
We fabricated SiC-TiC composites by hot-press sintering with aluminum and yttrium nitrate additive and evaluated crystal phase, relative density, microstructure, electrical resistivity and mechanical properties of the sintered body. And the effect of nitrate additive on the densification of SiC-TiC composites was compared with that of Al2O3 and Y2O3 additives. Because nitrate additives were uniformly dispersed in SiC and TiC mixture, it inhibited the growth of crystal grain between each other and formed fine and uniform microstructure, thereby improving mechanical properties and electrical resistivity. The electrical resistivity and flexural strength of the SiC-TiC composite with aluminum and yttrium nitrate additive were 2.3 Ω·cm and 652.3 MPa respectively.