Abstract
When MgO+ZrO2 were used as a sintering aid to SiC ceramics, it was found that ZrO2 reacted with SiC and MgO to form ZrC and a magnesium silicate. This reaction may provide a new route to synthesize ZrC or prepare ZrC/SiC composites by reaction sintering using ZrO2, SiC, and MgO as starting materials. In the present work, formation process of the ZrC phase in the SiC–MgO–ZrO2 system was addressed. Subsolidus phase relations at 1550 °C of the SiC–MgO–ZrO2 system and the related SiC–SiO2–ZrC–ZrO2–MgO (Si–Zr–Mg–O–C) system were investigated.
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Acknowledgements
Y. Jiang and L. M. Liu acknowledge the financial support by the National Natural Science Foundation of China under Grant Nos. NSFC51362001 and NSFC5127205, respectively.
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Sun, W.Z., Cheng, J.G., Huang, Z.K. et al. ZrC formation and the phase relations in the Si–Zr–Mg–O–C system. J Mater Sci 51, 8139–8147 (2016). https://doi.org/10.1007/s10853-016-0084-4
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DOI: https://doi.org/10.1007/s10853-016-0084-4