Chapter 17. SiC Reinforced-MoSi2/WSi2 Alloy Matrix Composites

  1. John B. Wachtman Jr.
  1. J. J. Petrovic and
  2. R. E. Honnell

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313008.ch17

A Collection of Papers Presented at the 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 7/8

A Collection of Papers Presented at the 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 7/8

How to Cite

Petrovic, J. J. and Honnell, R. E. (1990) SiC Reinforced-MoSi2/WSi2 Alloy Matrix Composites, in A Collection of Papers Presented at the 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313008.ch17

Author Information

  1. Materials Science and Technology Division Los Alamos National Laboratory Los Alamos, NM 97545

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1990

ISBN Information

Print ISBN: 9780470374924

Online ISBN: 9780470313008

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Keywords:

  • vapor-liquid-solid;
  • SiC;
  • alloy metrix composites;
  • oxidizing;
  • mechanical properties

Summary

Twenty vol% SiC reinforced-50/50 mol% MoSi2/WSi2 alloy matrix composites were fabricated by hot-pressing at 1900°C. Reinforcements examined were vapor-solid (VS) SiC whiskers, vapor-liquid-solid (VLS) SiC whiskers, and submicron SiC powders. All composites exhibited signficant plastic deformation at temperatures above 1200°C. Yield stress levels of alloy matrix composites were 8–10 times greater than those of pure MoSi2 at 1500°C, reaching values as high as 80 MPa at 1500°C.