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HRTEM study and mechanical properties of ZrB2–SiC composite: An insight into in-situ carbon formation over the SPS process
- Yu, H.;
- Namini, A.S.;
- Shakeri, M.S.;
- Delbari, S.A.;
- Van, Le Q.;
- ... Kim, S.Y.;
- 외 5명
WEB OF SCIENCE
17SCOPUS
17초록
In this research, we performed studies on the in-situ formation of carbon in the ZrB2–25 vol% SiC composite prepared by the spark plasma sintering (SPS) process at 1850 °C. The sintering behavior, microstructure, and mechanical properties of the resulted composite were also evaluated. The sample showed excellent sintering behavior, and a relative density of 99.77% could be obtained. X-ray diffractometry and microstructural results confirmed the in-situ formation of carbon during the SPS process. The source of carbon was found to be a reaction between SiC and its surface oxide. Moreover, the SiO2 and B2O3 compounds could form a low melting point eutectic phase and trigger the liquid phase sintering mechanism. The resulted composite achieved the fracture toughness of 5.63 MPa.m1/2, the Vickers hardness of 18.93 GPa, the flexural strength of 741 MPa, and the elastic modulus of 481 GPa. © 2022
키워드
- 제목
- HRTEM study and mechanical properties of ZrB2–SiC composite: An insight into in-situ carbon formation over the SPS process
- 저자
- Yu, H.; Namini, A.S.; Shakeri, M.S.; Delbari, S.A.; Van, Le Q.; Cha, J.H.; Kim, S.Y.; Jang, H.W.; Lee, S.-H.; Swiatkowska-Warkocka, Z.; Shokouhimehr, M.
- 발행일
- 2022-04
- 유형
- Article
- 권
- 104