Chapter 12. Properties of Ceramics in the ZrB2/ZrC/SiC System Prepared by Reactive Processing

  1. Don Bray
  1. Inna G. Talmy,
  2. James A. Zaykoski and
  3. Mark A. Opeka

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch12

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

How to Cite

Talmy, I. G., Zaykoski, J. A. and Opeka, M. A. (2008) Properties of Ceramics in the ZrB2/ZrC/SiC System Prepared by Reactive Processing, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294482.ch12

Author Information

  1. Naval Surface Warfare Center, Carderock Division, West Bethesda, MD 20817-5700

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470375587

Online ISBN: 9780470294482

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Keywords:

  • microstructure;
  • oxidation;
  • environments;
  • atmosphere;
  • alumina

Summary

Ceramics in the ZrB2-ZrC-SiC system were prepared from mixtures of Zr (or ZrC), SiB4, and C using in-situ displacement reactions. Microstructure and oxidation behavior were characterized as a function of phase composition of the ceramics which was varied by changing the ratio of components in the reactant mixtures. The ceramics with ZrB2 as a predominant phase had high oxidation resistance up to 1500°C compared to pure ZrB2 and ZrC ceramics. The ceramics with ZrB2 / SiC molar ratio of 2 (25 vol. % SiC), containing little or no ZrC, was the most oxidation resistant up to 1500°C. A model describing oxidation behavior of the ceramics is proposed.