Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 31, Issue 3, Pages 313-320Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2010.10.010
Keywords
Spark plasma sintering; SiC; TiC; Thermal conductivity; Nuclear applications
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Funding
- French Research Group MATINEX
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Some TiC-SiC composites with different SiC volume contents (0, 10, 25 and 50%) are prepared by spark plasma sintering (SPS). The relationship between density, grain growth. and temperature is studied in order to fabricate dense and nano-sized TiC-SiC composites. A sintering by SPS at 1800 degrees C during 5 min allowed to form TiC-SiC composites with relative density above 95% and an homogeneous distribution of TiC (grain size from 270 to 900 mu m) and nano-sized SiC. With the increasing of SIC volume contents, Vickers hardness and fracture toughness are improved; thermal conductivity at room temperature is increased whereas at high temperature it is reduced. In future studies, those materials will be irradiated to characterize monolithic TiC and TiC-SiC composites behaviour under irradiation. (C) 2010 Elsevier Ltd. All rights reserved.
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