Effect of C particle size on the mechanism of self-propagation high-temperature synthesis in the Ni-Ti-C system

Yang, Y. F., Wang, H. Y., Wang, J. G. and Jiang, Q. C. (2011) Effect of C particle size on the mechanism of self-propagation high-temperature synthesis in the Ni-Ti-C system. Journal of Alloys and Compounds, 509 25: 7060-7065. doi:10.1016/j.jallcom.2011.03.165


Author Yang, Y. F.
Wang, H. Y.
Wang, J. G.
Jiang, Q. C.
Title Effect of C particle size on the mechanism of self-propagation high-temperature synthesis in the Ni-Ti-C system
Journal name Journal of Alloys and Compounds   Check publisher's open access policy
ISSN 0925-8388
1873-4669
Publication date 2011-06-23
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.jallcom.2011.03.165
Volume 509
Issue 25
Start page 7060
End page 7065
Total pages 6
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Collection year 2011
Language eng
Subject 2210 Mechanical Engineering
2211 Mechanics of Materials
2505 Materials Chemistry
2506 Metals and Alloys
Abstract Effect of C particle size on the mechanism of self-propagation high-temperature synthesis (SHS) in the Ni-Ti-C system was investigated. Fine C particle resulted in a traditional mechanism of dissolution-precipitation while coarse C particle made the reaction be controlled by a mechanism of the diffusion of C through the TiCx layer. The whole process can be described: C atoms diffusing through the TiCx layer dissolved into the Ni-Ti liquid and TiC were formed once the liquid became supersaturated. Simultaneously, the heat generated from the TiC formation made the unstable TiCx layer break up. However, with the spread of Ti-Ni liquid, a new TiCx layer was formed again at the interface between spreading liquid and C particle. This process cannot stop until all the C particles are consumed completely.
Keyword Ceramics
Chemical synthesis
Composites materials
Phase transitions
Powder metallurgy
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
 
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