29. Processing and Ballistic Performance of Al2O3TiB2 Composites

  1. Jeffrey J. Swab
  1. G. A. Gilde and
  2. J. W. Adams

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291276.ch29

Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7

Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7

How to Cite

Gilde, G. A. and Adams, J. W. (2005) Processing and Ballistic Performance of Al2O3TiB2 Composites, in Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7 (ed J. J. Swab), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291276.ch29

Author Information

  1. U.S. Army Research Laboratory Aberdeen Proving Ground, MD 21005

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982374

Online ISBN: 9780470291276

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Keywords:

  • microstructure;
  • monolithic ceramics;
  • fabrication;
  • depth of penetration (DOP);
  • grain boundaries

Summary

Early research on Al2O3/TiB2 composites focused on exploiting their potential as a low cost armor ceramic. Limited ballistic data indicated that the microstructure had a dramatic effect on ballistic performance. In some cases, the penetration resistance of Al2O3/TiB2 approached that of monolithic TiB2 ceramics. However, challenges were encountered both in quantifying the microstructural details and fabricating the desired microstructure.

The large spread in depth of penetration results for these ceramics, coupled with an insufficient number of samples tested led to some confusion in accessing the effect microstructure had on the ballistic performance. Our research focused on microstructure control during fabrication and a more thorough ballistic evaluation to correlate microstructure with penetration resistance. Composites were made from mixed Al2O3 and TiB2 powders. The composites, prepared with dramatically different microstructures had similar ballistic performance.

Results show that the penetration resistance of Al2O3/TiB2 composites is not as good as a hot-pressed silicon carbide.