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Journal of Materials Science

, Volume 42, Issue 24, pp 9927–9933 | Cite as

Reaction synthesis of TiC–TiB2/Al composites from an Al–Ti–B4C system

  • Binglin Zou
  • Ping Shen
  • Qichuan Jiang
Article

Abstract

The TiC–TiB2/Al composites were fabricated by self-propagating high-temperature synthesis (SHS) from Al–Ti–B4C compacts. The addition of Al to the Ti–B4C reactants facilitates the ignition occurrence, lowers the reaction exothermicity, and modifies the resultant microstructure. The maximum combustion temperature and combustion wave velocity decrease with the increase in the Al amount. The B4C particle size exerts a significant effect on the combustion wave velocity and the extent of the reaction, while that of Ti has only a limited influence. The reaction products are primarily dependent on the B4C particle size and the Al content in the reactants. Desired products consisting of only the TiC, TiB2, and Al phases could be obtained by a cooperative control of the B4C particle size and the Al content.

Keywords

TiAl3 Ignition Delay Time Titanium Aluminides Titanium Diboride Maximum Combustion Temperature 

Notes

Acknowledgement

This work is supported by The National Natural Science Foundation of China (Project No. 50531030) and the Ministry of Science and Technology of China (No. 2005CCA00300) as well as by the Project 985-Automotive Engineering of Jilin University.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Key Laboratory of Automobile Materials, Department of Materials Science and EngineeringJilin UniversityChangchunP.R. China

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