Journal
CERAMICS INTERNATIONAL
Volume 42, Issue 13, Pages 14463-14468Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.06.049
Keywords
SiC ceramic; Ti3SiC2; Spark plasma sintering; Ceramic joining
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Funding
- National Natural Science Foundation of China [51462026, 51062013]
- Inner Mongolia Natural Science Foundation [2014MS0509]
- Shanghai Technical Platform for Testing and Characterization of Inorganic Materials [14DZ2292900]
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The development of reliable joining technology is of great importance for the full use of SiC. Ti3SiC2, which is used as a filler material for SiC joining, can meet the demands of neutron environment applications and can alleviate residual stress during the joining process. In this work, SiC was joined using different powders (Ti3SiC2 and 3Ti/1.2Si/2C/0.2Al) as filler materials and spark plasma sintering (SPS). The influence of the joining temperature on the flexural strength of the SiC joints at room temperature and at high temperatures was investigated. Based on X-ray diffraction and scanning electron microscopy analyses, SiC joints with 3Ti/1.2Si/2C/0.2Al powder as the filler material possess high flexural strengths of 133 MPa and 119 MPa at room temperature and at 1200 degrees C, respectively. The superior flexural strength of the SiC joint at 1200 degrees C is attributed to the phase transformation of TiO2 from anatase to rutile. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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