Hostname: page-component-8448b6f56d-cfpbc Total loading time: 0 Render date: 2024-04-20T02:59:51.462Z Has data issue: false hasContentIssue false
  • English
  • Français

Fabrication, microstructure, and mechanical properties of TaC particulate and SiC fiber-reinforced lithia-alumina-silica composites

Published online by Cambridge University Press:  03 March 2011

Hyun-Ho Shin ,
Randolph Kirchain  and
Robert F. Speyer
Hyun-Ho Shin
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
Randolph Kirchain
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
Robert F. Speyer
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
Get access

Abstract

Additions of O to 9 mol % Ta2O5 to a lithia-alumina-silica glass-ceramic matrix Nicalon SiC-reinforced composite increased the elastic modulus and ultimate strength of the composite. The additive fostered sphereulitic growth of β-eucriptite solid solution crystals which concentrated Ta2O5 at sphereulite boundaries and adjacent to the fiber-matrix carbon-rich interphases. These regions reacted with the interphases as well as soluble carbon monoxide gas to convert them to TaC. The former reaction was shown to be thermodynamically favorable above 983 °C, while the latter was favorable above 1249 °C. The improvement in mechanical properties was attributed to TaC particulate reinforcement, and suggests a simple glass-ceramic route to the fabrication of particulate-reinforced ceramic matrix composites.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 3 , March 1995 , pp. 602 - 608
Copyright
Copyright © Materials Research Society 1995

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

1Brennan, J. J. and Prewo, K. M., J. Mater. Sci. 17, 2371–2383 (1982).CrossRefGoogle Scholar
2Prewo, K. M., Brennan, J. J., and Layden, G. K., Am. Ceram. Soc. Bull. 65 (2), 305–313, 322 (1986).Google Scholar
3Benson, P. M., Spear, K. E., and Pantano, C. G., Ceram. Eng. Sci. Proc. 9 (7–8), 663–670 (1988).CrossRefGoogle Scholar
4Homeny, J., Van Valzah, J. R., and Kelly, M. A., J. Am. Ceram. Soc. 73 (7), 2054–2059 (1990).CrossRefGoogle Scholar
5Hsu, J. Y. and Speyer, R. F., J. Am. Ceram. Soc. 72 (12), 2334–2341 (1989).CrossRefGoogle Scholar
6Hsu, J. Y. and Speyer, R. F., J. Mater. Sci. 27, 374–380 (1992).CrossRefGoogle Scholar
7Marshall, D. B., J. Am. Ceram. Soc. 67 (12), C-259–C-260 (1984).Google Scholar
8Teranishi, H., Ichikawa, H., and Ishikawa, T., New Materials and New Processes 2, 379–385 (1983).Google Scholar
9Reference manual for a Vickers hardness indenter, LECO, Co, Model M400–F, St. Joseph, MI.Google Scholar
10Anderson, T. W. and Sclove, S. L., The Statistical Analysis of Data, 2nd ed. (The Scientific Press, Palo Alto, CA, 1986).Google Scholar
11Hsu, J. Y. and Speyer, R. F., J. Mater. Sci. 27, 381–390 (1992).CrossRefGoogle Scholar
12Levin, E. M., Robbins, C. R., and McMurdie, H. F., Phase Diagrams for Ceramists, 3rd ed., edited by Reser, M. K. (American Ceramic Society, Westerville, OH, 1974), Fig. 453.Google Scholar
13Weast, R. C., CRC Handbook of Chemistry and Physics, 58th ed. (CRC Press, Inc., Cleveland, OH, 1978), p. B166.Google Scholar
14Doremus, R. H., Glass Science (John Wiley and Sons, Inc., New York, 1973).Google Scholar
15Ichinose, N., Introduction to Fine Ceramics, Applications in Engineering (John Wiley and Sons, New York, 1987), p. 52.Google Scholar
16Haber, R. A. and Anderson, R. M., in Ceramics and Glasses, Engineered Materials Handbook Volume 4, edited by Schneider, S. J. Jr. (ASM INTERNATIONAL, Materials Park, OH, 1991), p. 859.Google Scholar