Chapter 19. Orientation of Platelet Redforcements in Ceramic Matrix Composites Produced by Pressure Filtration

  1. John B. Wachtman Jr.
  1. D. A. Warner,
  2. K. A. Warner,
  3. D. Juul and
  4. O. T. Sørensen

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313954.ch19

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8

How to Cite

Warner, D. A., Warner, K. A., Juul, D. and Sørensen, O. T. (1994) Orientation of Platelet Redforcements in Ceramic Matrix Composites Produced by Pressure Filtration, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313954.ch19

Author Information

  1. Materials Department, RisøNational Laboratory DK-4000 Roskilde, Denmark

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375174

Online ISBN: 9780470313954

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Keywords:

  • platelet;
  • anisotropic;
  • agglomerate;
  • composition;
  • ammonium

Summary

Alumina platelet (Al2O3PL) reinforced Y-TZP composites were produced by pressure filtration of dispersed suspensions. The platelet texture within the consolidated compacts was evaluated by SEM and neutron diffraction to assess the effects of pressing rate, constant rate versus constant displacement filtration, and die loading on platelet orientation. A weak texture condition, termed “eddy texturing” due to an apparent dependence on fluid flow during filtration, dominated platelet orientation. The resulting composites possessed an anisotropic fracture toughness (KIC) between the compact surfaces and the bulk material. Die loading procedure and Al2O3 agglomerate removal strongly influenced the density and flexural strength of the sintered composites.