Chapter 48. Dynamic Compression Behavior of a Hot Pressed TiB2-Al2O3 Ceramic Composite from SHS-Powders

  1. Don Bray
  1. Jean-Marcel Jamet

Published Online: 23 MAR 2010

DOI: 10.1002/9780470294499.ch48

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4

How to Cite

Jamet, J.-M. (1998) Dynamic Compression Behavior of a Hot Pressed TiB2-Al2O3 Ceramic Composite from SHS-Powders, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294499.ch48

Author Information

  1. Institut de Chimie et Pétrochimie du Collège de Maisonneuve 6220, rue Sherbrooke Est Montrèal (Quèbec) H1N 1C1 Canada

Publication History

  1. Published Online: 23 MAR 2010
  2. Published Print: 1 JAN 1998

ISBN Information

Print ISBN: 9780470375594

Online ISBN: 9780470294499

SEARCH

Keywords:

  • cleaner solution;
  • disposed;
  • emulsion;
  • accumulation;
  • ultrafilter

Summary

A TiB2-Al2O3 ceramic composite material produced at Georgia Tech. Research Institute, Atlanta (USA), using Self propagating High temperature Synthesis (SHS)-powders was examined and the characteristics of its dynamic compression behavior studied using a microstructural approach. The ceramic composite material was loaded under high strain-rate conditions using Hopkinson bar devices (SHPB) in compression and found to display a maximum compression strength of 4.5 GPa. Prior determination of the material mechanical characteristics in quasi-static reveals the influence of strain rate. Analysis of the role played by residual porosity on the development of microcracks contributes to a better understanding of the failure mechanisms. On the other hand, the role played by the TiB2 grains in reinforcing the alumina matrix via a crack deviation mechanism was also characterized.