Chapter 10. AI2O3- 5 wt% Al Composites Via Synthesized Precursor by High Energy Milling: ICP Sintering Characteristics

  1. John B. Wachtman Jr.
  1. Shome N. Sinha1 and
  2. S. H. Kim2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314234.ch10

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 9/10

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 9/10

How to Cite

Sinha, S. N. and Kim, S. H. (1993) AI2O3- 5 wt% Al Composites Via Synthesized Precursor by High Energy Milling: ICP Sintering Characteristics, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314234.ch10

Author Information

  1. 1

    University of Illinois at Chicago Chicago, IL 60680

  2. 2

    Indiana-Purdue University Fort Wayne, IN 46805

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375273

Online ISBN: 9780470314234

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Keywords:

  • attritor;
  • sintering;
  • microstructure;
  • monolithic ceramics;
  • interpenetrating

Summary

Sintering of Alumina-5 wt% composite powder by Inductively Coupled Argon Plasma (ICP) is studied. The precursor was synthesized under milling conditions in an Attritor in which it exhibited limited architecture of Interpenetrating Phase Composites (IPC). The precursor was formed without binder. After 30 sec of sintering, the compact was only 85% dense and exhibited evidences of a liquid phase. The optimal sintering period for the present case was about 60 - 120 sec where >99% dense compacts have limited IPC microstructures and optimal toughness. If the sintering is prolonged to 240 sec, the toughness and density values decreased and a few voids appeared in the microstructure. The grain size, density, hardness values of the compacts are included.