首页|HRTEM study and mechanical properties of ZrB2–SiC composite: An insight into in-situ carbon formation over the SPS process
HRTEM study and mechanical properties of ZrB2–SiC composite: An insight into in-situ carbon formation over the SPS process
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NSTL
Elsevier
? 2022In 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.
CarbonCompositeMechanical propertiesSiCTEMZrB2
Lee S.-H.、Jang H.W.、Shokouhimehr M.、Yu H.、Namini A.S.、Delbari S.A.、Shakeri M.S.、Swiatkowska-Warkocka Z.、Van Le Q.、Kim S.Y.、Cha J.H.
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Division of Powder/Ceramics Research Korea Institute of Materials Science
Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University
School of Materials Science and Engineering Nanjing Institute of Technology
Department of Engineering Sciences Faculty of Advanced Technologies University of Mohaghegh Ardabili
Institute of Nuclear Physics Polish Academy of Sciences
Department of Materials Science and Engineering Institute of Green Manufacturing Technology Korea University
Innovative Enterprise Cooperation Center Korea Institute of Science & Technology
NSTL
Elsevier
