Chapter 12. Preparation of Polycrystalline Ceramic Compacts Made of Alumina Powder with a Bimodal Particle Size Distribution for Hot Isostatic Pressing

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. Matthias Wolff,
  2. Adelina Braun,
  3. Erik Bartscherer and
  4. Rolf Clasen

Published Online: 27 MAR 2008

DOI: 10.1002/9780470294802.ch12

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3

How to Cite

Wolff, M., Braun, A., Bartscherer, E. and Clasen, R. (2008) Preparation of Polycrystalline Ceramic Compacts Made of Alumina Powder with a Bimodal Particle Size Distribution for Hot Isostatic Pressing, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294802.ch12

Author Information

  1. Department of Powder Technology Saarland University, Building 43, P.O. Box 15 11 50, D-66041 Saarbriicken, Germany

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375839

Online ISBN: 9780470294802

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Keywords:

  • ceramic compacts;
  • nanosized alumina powder;
  • electrophoretic deposition;
  • hot isostatic pressing;
  • tetramethyl ammonium hydroxide

Summary

Ceramic compacts made of nanosized alumina powder with a bimodal particle size distribution are densified with the objective of a formation of transparent ceramics. Important conditions for the transparency of ceramics are small grain sizes and compacts of high density without pores. This requires green bodies with high green density and special sintering methods. As complete densification of compacts of nanosized powders is difficult, the compacts are prepared with the aim to make a capsule-free HIP possible. Different nanosized and coarse powders are used to prepare compacts made of mixtures of coarse and fine non-agglomerated nanosized powders. The green bodies are fabricated by electrophoretic deposition (EPD) with the membrane method. The green-bodies are pre-sintered. The influence of the HIP process on sintering behavior and evolution of microstructure has been examined.