期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 36, 期 1, 页码 235-238出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2015.09.024
关键词
Hafnium carbides; Spark plasma sintering; Microstructure
资金
- R&D Convergence Program of MSIP (Ministry of Science, ICT and Future Planning)
- NST (National Research Council of Science & Technology) of Republic of Korea [CMIP-13-4-KIMS]
A novel route combining the reactive spark plasma sintering (R-SPS) and HfSi2-C powders was proposed for fabricating dense and nano-structured HfC-SiC composites. Ultra-fine and homogeneously distributed HfC (310 nm) and SiC (210 nm) grains were obtained after sintering at 1750 degrees C, which were attributed to the molecular-level homogeneity of Si and Hf in HfSi2, the high-energy ball-milling of raw powders and low sintering temperature by R-SPS. The fracture toughness of the composites was improved up to 3 MPa m(1/2) because of the homogeneous distribution of Hit and SiC grains and consequent enhancement of crack deflection. (C) 2015 Elsevier Ltd. All rights reserved.
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