Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-08T00:36:47.623Z Has data issue: false hasContentIssue false
  • English
  • Français

Solid state reactions of SiC with Co, Ni, and Pt

Published online by Cambridge University Press:  31 January 2011

T.C. Chou ,
A. Joshi  and
J. Wadsworth
T.C. Chou
Affiliation:
Research and Development Division, Lockheed Missiles and Space Company, Inc., O-9310, B-204, 3251 Hanover Street, Palo Alto, California 94304
A. Joshi
Affiliation:
Research and Development Division, Lockheed Missiles and Space Company, Inc., O-9310, B-204, 3251 Hanover Street, Palo Alto, California 94304
J. Wadsworth
Affiliation:
Research and Development Division, Lockheed Missiles and Space Company, Inc., O-9310, B-204, 3251 Hanover Street, Palo Alto, California 94304
Get access

Abstract

Solid state reactions between SiC ceramics and Co, Ni, and Pt metals have been studied at temperatures between 800 and 1200 °C for various times under He or vacuum conditions. Reactions between the metals and SiC were extensive above 900 °C. Various metal silicides and carbon precipitates were formed in layered reaction zones. Interfacial melting was also observed at certain temperatures; teardrop-shaped reaction zones, porosity, and dendritic microstructure resulting from melting/solidification were evident. The metal/ceramic interfaces exhibited either planar or nonplanar morphologies, depending upon the nature of the metal/ceramic reactions. Concave interfacial contours were observed when interfacial melting occurred. By contrast, planar interfaces were observed in the absence of interfacial melting. In all cases, the decomposition of SiC was sluggish and may serve as a rate limiting step for metal/ceramic reactions. Free unreacted carbon precipitates were formed in all the reaction zones and the precipitation behavior was dependent upon the metal system as well as the location with respect to the SiC reaction interface. Modulated carbon bands, randomly scattered carbon precipitates, and/or carbon-denuded bands were formed in many of the reaction zones, and the carbon existed in a mixed state containing both amorphous and graphitic forms.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 4 , April 1991 , pp. 796 - 809
Copyright
Copyright © Materials Research Society 1991

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

1Davis, R. F., Thin Solid Films 181, 1 (1989).Google Scholar
2Krishnamurthy, S., Interfaces in Metal-Ceramics Composites, edited by Lin, R. Y., Arsenault, R. J., Martins, G. P., and Fishman, S. G. (TMS, Warrendale, PA, 1990), p. 75.Google Scholar
3Schuyler, D. R., Sohi, M. M., and Mahapatra, R., Interfaces in Metal-Ceramics Composites, edited by Lin, R. Y., Arsenault, R. J., Martins, G. P., and Fishman, S. G. (TMS, Warrendale, PA, 1990), p. 475.Google Scholar
4Chou, T. C., Scripta Met. et Mat. 24, 409 (1990).Google Scholar
5Hall, E. L., Kouh, Y. M., Jackson, M. R., and Mehan, R. L., Metall. Trans. A 14A, 781 (1983).CrossRefGoogle Scholar
6Jackson, M. R., Mehan, R. L., Davis, A. M., and Hall, E. L., Metall. Trans. A 14A, 355 (1983).Google Scholar
7Zhang, Z. and Wei, K., Interfaces in Metal-Ceramics Composites, edited by Lin, R. Y., Arsenault, R. J., Martins, G. P., and Fishman, S. G. (TMS, Warrendale, PA, 1990), p. 259.Google Scholar
8Schiepers, R. C. J., Loo, F. J. J. van, and With, G. D., J. Am. Ceram. Soc. 71, C–284 (1988).Google Scholar
9Pai, C. S., Hanson, C. M., and Lau, S. S., J. Appl. Phys. 57, 618 (1985).Google Scholar
10Katagiri, G., Ishida, H., and Ishitani, A., Carbon 26, 565 (1988).CrossRefGoogle Scholar
11Kubaschewski, O. and Alcock, C. B., Metallurgical Thermochemistry, 5th ed. (Pergamon Press, New York, 1979), pp. 280 and 379.Google Scholar
12Hansen, P. M., in Constitution of Binary Alloys (McGraw-Hill, New York, 1958), p. 379.Google Scholar
13Yamada, T., Sikiguchi, H., Okamoto, H., Azuma, S., and Kitamura, A., in Diffusion Bonding of SiC or Si3N4 to Metal, Proc. 2nd Int. Symp. on Ceramic Materials and Components for Engines, edited by Bunk, W. and Hausner, H., Verlag Deutsche Veramische Gesellschaft, Lubeck-Travemunde, Federal Republic of Germany, 1986.Google Scholar
14Bermudez, V. M., Appl. Phys. Lett. 42, 70 (1983).CrossRefGoogle Scholar
15Bermudez, V. M., J. Appl. Phys. 63, 4951 (1988).Google Scholar