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- Title
Densification process of TiCx–Ni composites formed by self-propagating high-temperature synthesis reaction.
- Authors
YONG CHOI; LEE, J. K.; MULLINS, M. E.
- Abstract
Densification behaviour of the TiC-Ni system formed by self-propagating high-temperature synthesis (SHS) were studied to develop the structural metal-matrix composites. The composites were prepared by two routes: (1) consolidation during the SHS reaction, and (2) consolidation process after the SHS reaction. The final phases of the stoichiometric reactant mixture of titanium and graphite with 50 wt% nickel produced by simultaneous combustion reactions, were titanium carbide in a nickel-rich solid solution containing carbon and titanium. The density of the products was relatively low, with a value of 90% theoretical density. In the second approach, liquid infiltration and liquid-phase sintering were applied for the titanium carbide-nickel mixture. Densification rates were reduced due to the excess carbon in the combustion products of titanium carbide. The densities of the liquid-phase sintered samples were more than 97% theoretical density.
- Subjects
TITANIUM carbide; NICKEL; HIGH temperatures; COMPOSITE materials; COMBUSTION; CARBIDES
- Publication
Journal of Materials Science, 1997, Vol 32, Issue 7, p1717
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1023/A:1018519815596