Chapter 46. Strength and Flawelimination Assessmentin Tape Cast Ceramic Laminates

  1. John B. Wachtman Jr.
  1. R. Ham-Su and
  2. D. S. Wilkinson

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313978.ch46

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

How to Cite

Ham-Su, R. and Wilkinson, D. S. (1994) Strength and Flawelimination Assessmentin Tape Cast Ceramic Laminates, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313978.ch46

Author Information

  1. Department of Materials Science and Engineering McMaster University, Hamilton, Ontario L8S 4L7, Canada

Publication History

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

ISBN Information

Print ISBN: 9780470375198

Online ISBN: 9780470313978

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Keywords:

  • fabrication;
  • ceramic materials;
  • mechanical strength;
  • reliability;
  • microwave annealing

Summary

Monolithic Al2O3 ceramic laminates were fabricated via a tape casting process. The strength of single tapes were compared with laminates using biaxial flexure tests. The average fracture stress was unchanged. However, the laminates presented a multi-modal strength distribution. The feasibility of eliminating or diminishing void-type flaws present in the green tapes was assessed. To this end, tapes were first punctured. then laminated and sintered and the effect of these known flaws in the final ceramic was assessed by four-point bending tests. me thermocompression of green tapes during laminate fabrication was found to drastically reduce the severity of flaws.