Chapter 8. Effect of Ni-Al Precursor Type on Fabrication and Properties of Tic-Ni3Al Composites

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. T. N. Tiegs,
  2. F. C. Montgomery and
  3. P. A. Menchhofer

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291184.ch8

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

How to Cite

Tiegs, T. N., Montgomery, F. C. and Menchhofer, P. A. (2004) Effect of Ni-Al Precursor Type on Fabrication and Properties of Tic-Ni3Al Composites, in 28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3 (eds E. Lara-Curzio and M. J. Readey), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291184.ch8

Author Information

  1. Oak Ridge National Laboratory Oak Ridge, TN 37831–6087

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051498

Online ISBN: 9780470291184

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Keywords:

  • TIC;
  • LIC;
  • UT;
  • V-LPHIP;
  • TIC

Summary

TiC-Ni3Al composites containing about 50 vol. % metal are of interest for application in diesel engines. Processing studies have shown that the Ni-Al precursor type can have a considerable effect on the densification behavior and final mechanical properties. Several different metal powder combinations were examined that would react to produce Ni3Al. These included: NiAl + Ni; Al-30 Ni + Ni; Ni+Al+NiAl + Ni; and Ni + Al. Sintering behavior was acceptable for all types except when elemental Al was used. Those particular samples exhibited macroscopic cracking due to differential heating and shrinkage resulting from the highly exothermic reaction between the Ni and Al. While the other samples densified well, only the composites made from the NiAl + Ni combination had mechanical properties that were acceptable.