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A Novel in-situ Synthesis Route of Ti3SiC2-SiC Composite by Liquid Silicon Infiltration

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Author(s): LU Cui-Ying, YIN Xiao-Wei, LI Xiang-Ming

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 25;
Issue: 9;
Start page: 1003;
Date: 2010;
Original page

Keywords: LSI | novel in-situ rout of synthesis | TiC/C performs | Ti3SiC2-SiC composites

ABSTRACT
The aim of the present work was to prepare Ti3SiC2-SiC composite by using liquid silicon infiltration (LSI) from TiC/C preform. XRD, SEM and EDS were used to identify the formed phases and analyze the microstructures of the obtained composites. The results show that the composites are made of Ti3SiC2 and small SiC. The surface morphologies of Ti3SiC2 exhibit plate-like structure with the grain size of 3-10um. The hardness of S1550-1, S1550-3 and S1550-4 is 6.8GPa, 7.1GPa and 7.8GPa for a load of 10kg, respectively. Their density is in the range of 3.55-3.96g/cm3. All the experimental results prove that the novel in situ synthesis route of Ti3SiC2-SiC composite by LSI is feasible.
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