Hostname: page-component-745bb68f8f-g4j75 Total loading time: 0 Render date: 2025-02-05T07:09:20.502Z Has data issue: false hasContentIssue false
  • English
  • Français

Mechanical and Thermal Properties of SiC-SiC Composites Made With CVR SiC Fibers

Published online by Cambridge University Press:  10 February 2011

W. Kowbel ,
H. T. Tsou ,
C. A. Bruce  and
J. C. Withers
W. Kowbel
Affiliation:
MER Corp., Tucson, AZ
H. T. Tsou
Affiliation:
MER Corp., Tucson, AZ
C. A. Bruce
Affiliation:
MER Corp., Tucson, AZ
J. C. Withers
Affiliation:
MER Corp., Tucson, AZ
Get access

Abstract

Nicalon fiber is the primary reinforcement in SiC-SiC composites currently produced by a variety of techniques including CVI and polymer infiltration. Low strength retention and dimensional change at high temperatures of the Nicalon fibers limits the choice of manufacturing processes which can be employed to produce low cost SiC-SiC composites. MER has developed a SiC reinforcement based upon the conversion of low cost carbon fabric to SiC via a Chemical Vapor Reaction (CVR) process. These new SiC filaments exhibit excellent creep resistance at temperatures up to 1600°C. SiC-SiC composites were fabricated using different types of graphite fabric converted to SiC fabric utilizing the CVR process combined with a polycarbosilane (PCS) infiltration and CVI densification. In addition, enhancement of the composite through-the-thickness thermal conductivity was accomplished via boron doping of the matrix. A correlation between processing conditions, microstructure and properties of the SiC-SiC composites will be presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 410: Symposium S – Covalent Ceramics III-Science and Technology of Non-Oxides , 1995 , 417
Copyright
Copyright © Materials Research Society 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Naslain, R., Langlois, F., Mat. Sci. Res. 20, 145 (1986).Google Scholar
2. Kowbel, W. et al., J. Nuc. Mat., 219, 15 (1995).Google Scholar
3. Szweda, A., Boiswest, R., Jones, R., SAMPE Proceedinq,, pp. 1791–1805 (1994).Google Scholar
4. Snead, L.L., Schwartz, O. J., J. Nuc. Mat. 219, 1 (1995).Google Scholar