Chapter 8. Silicon Nitride Ceramics for Valve Train Applications in Advanced Diesel Engines1

  1. Mrityunjay Singh and
  2. Todd Jessen
  1. Seung Kun Lee1,
  2. Phil H. Mccluskey1,
  3. Michael J. Readey1,
  4. H. -T. Lin2 and
  5. A.A. Wereszczak2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294680.ch8

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

How to Cite

Lee, S. K., Mccluskey, H., Readey, M. J., Lin, H. .-T. and Wereszczak, A.A. (2001) Silicon Nitride Ceramics for Valve Train Applications in Advanced Diesel Engines1, in 25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3 (eds M. Singh and T. Jessen), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294680.ch8

Author Information

  1. 1

    Technical Center Caterpillar Inc. Peoria, IL 61656

  2. 2

    Metals and Ceramics Division Oak Ridge National Laboratory Oak Ridge, TN 37831–6069

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2001

ISBN Information

Print ISBN: 9780470375730

Online ISBN: 9780470294680

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Keywords:

  • microstructure;
  • oxidation;
  • ceramics;
  • nitride;
  • spectroscopy

Summary

Advanced diesel engines will require valve train components capable of operating under significantly higher pressures and temperatures than seen in current engines. Also, these materials will be subjected to a severe corrosive environment. Silicon nitride offers excellent wear resistance and corrosion resistance at high temperature and is under evaluation for these components. The stability and mechanical reliability of silicon nitride needs to be thoroughly assessed and well understood before components can be successfully implemented in valve train applications. In this paper, the mechanical and thermal properties (strength, toughness, damage tolerance, contact wear, thermal shock, and corrosion\oxidation) of commercially available silicon nitrides were investigated. The role that microstructure and second phases play in wear and damage resistance was described. Degradation of mechanical properties of silicon nitrides was discussed in conjunction with oxidation and glassy phase softening. A guideline for material selection for valve train applications was suggested.