Chapter 15. Improved Consolidation of Silicon Carbide

  1. William Smothers
  1. Marc R. Freedman1 and
  2. Michael L. Millard2

Published Online: 27 MAR 2008

DOI: 10.1002/9780470320341.ch15

10th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 7, Issue 7/8

10th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 7, Issue 7/8

How to Cite

Freedman, M. R. and Millard, M. L. (1986) Improved Consolidation of Silicon Carbide, in 10th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 7, Issue 7/8 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320341.ch15

Author Information

  1. 1

    NASA-Lewis Research Center Cleveland, OH 44135

  2. 2

    General Electric Company Evendale, OH 45234

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 1986

ISBN Information

Print ISBN: 9780470374672

Online ISBN: 9780470320341

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Keywords:

  • carbide powder;
  • slurry-pressed;
  • subsequent processing steps;
  • agglomerates;
  • dense body

Summary

Alpha-silicon carbide powder consolidated by both dry and wet methods. Dry pressing in a double-acting steel die yielded sintered test bars with an average flexural strength of 235.6 MPa with a critical Saw size of≈100m̈m. An aqueous slurry pressing technique produced sintered test bars with an average flexural strength of 440.8 MPa with a critical flaw size of≈25m̈m. Image analysis revealed a reduction in both pore area and pore size distribution in the slurry-pressed sintered test bars. The improvements in the slurry-pressed material properties are discussed in terms of reduced agglomeration and improved particle packing during consolidation.