Journal
JOURNAL OF ADVANCED CERAMICS
Volume 9, Issue 4, Pages 462-470Publisher
SPRINGER
DOI: 10.1007/s40145-020-0389-2
Keywords
SiC whisker; Ti3SiC2; mechanical property; thermal conductivity; spark plasma sintering
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Funding
- National Natural Science Foundation of China [11975296, 51811540402]
- Natural Science Foundation of Ningbo City [2018A610001]
- Korea Ministry of Education [NRF-2018K2A9A2A06018203]
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High strength SiC whisker-reinforced Ti(3)SiC(2)composites (SiCw/Ti3SiC2) with an improved thermal conductivity and mechanical properties were fabricated by spark plasma sintering. The bending strength of 10 wt% SiCw/Ti(3)SiC(2)was 635 MPa, which was approximately 50% higher than that of the monolithic Ti3SiC2(428 MPa). The Vickers hardness and thermal conductivity (k) also increased by 36% and 25%, respectively, from the monolithic Ti(3)SiC(2)by the incorporation of 10 wt% SiCw. This remarkable improvement both in mechanical and thermal properties was attributed to the fine-grained uniform composite microstructure along with the effects of incorporated SiCw. The SiCw/Ti(3)SiC(2)can be a feasible candidate for the in-core structural application in nuclear reactors due to the excellent mechanical and thermal properties.
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