Chapter 54. Wear and Microstructure of SiC Ceramics

  1. William Smothers
  1. C. Cm. Wu,
  2. R. W. Rice,
  3. B. A. Platt and
  4. S. Carrle

Published Online: 26 MAR 2008

DOI: 10.1002/9780470320280.ch54

Proceedings of the 9th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 6, Issue 7/8

Proceedings of the 9th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 6, Issue 7/8

How to Cite

Wu, C. Cm., Rice, R. W., Platt, B. A. and Carrle, S. (1985) Wear and Microstructure of SiC Ceramics, in Proceedings of the 9th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 6, Issue 7/8 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320280.ch54

Author Information

  1. Naval Research Lab Washington, DC 20375–5000

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1985

ISBN Information

Print ISBN: 9780470374337

Online ISBN: 9780470320280

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Keywords:

  • microstructure;
  • SiC;
  • silicon carbide;
  • grain-size;
  • ceramic

Summary

Micro and macro wear tests are reported for several SiC materials made by different processes and the results compared with other physical properties, as well as microstructural variables. Variations in grain size, shape, or both in all materials, and in distribution of second phases (mainly Si), appear to be major sources of variation in the data. However, overall, wear (W) increases with increasing grain size, and hardness and 1 /W appear to decrease linearly with 1/√G, i.e., consistent with a Hall-Petch relationship. Less scatter, attributed to much greater sampling, in the macro wear test, indicates lower wear in most Si-containing bodies, and more clearly shows the above type of grain-size dependence for materials with and without free Si.