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conferenceseries
.com
Volume 5, Issue 6 (Suppl)
J Mat. Sci.
ISSN: 2321-6212
Advanced Materials 2017
October 26-28, 2017
OCTOBER 26-28, 2017 OSAKA, JAPAN
13
TH
INTERNATIONAL CONFERENCE ON
Advanced Materials and Nanotechnology
Improve microstructure and mechanical properties of C
f
/SiC-C
f
/SiC joint by TiCoNb+Nb foil
Qiang Zhang and Jie Zhang
Harbin Institute of Technology, China
T
i35Co35Nb30 eutectic filler alloy was used to braze Cf/SiC composite. The results showed that there were many large
TiCo intermetallic compounds in the brazing seam and the shear strength of the joint was only 34.4 MPa. To improve
the microstructure and mechanical properties of the joint, Nb foil was introduced into the filler alloy. Nb can melt into the
liquid solder to adjust liquid solder composition during brazing process. The effect of holding time on the microstructure and
mechanical properties of brazed joints was investigated. With extending the holding time, the Nb foil thinning and disappeared
gradually, TiCo and Nb (s,s) eutectic and CoNb4Si compound increased and massive TiCo intermetallic compounds
disappeared. The highest shear strength with 66 MPa was received while the joint brazed at 1300 °C for 15 min.
Biography
Qiang Zhang is currently pursuing his PhD from the Harbin Institute of Technology, China. He has published 2 academic papers in Journal of the European Ceramic
Society and Materials Science and Engineering and was granted 2 patents.
zhangqianghit2008@163.comQiang Zhang et al., J Mat. Sci. 2017, 5:6
DOI: 10.4172/2321-6212-C1-008