Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-26T03:31:04.577Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis of functionally graded metal-ceramic microstructures by chemical vapor deposition

Published online by Cambridge University Press:  03 March 2011

W.Y. Lee ,
Y.W. Bae  and
K.L. More
W.Y. Lee
Affiliation:
Oak Ridge National Laboratory, Oak-Ridge, Tennessee 37831-6063
Y.W. Bae
Affiliation:
Oak Ridge National Laboratory, Oak-Ridge, Tennessee 37831-6063
K.L. More
Affiliation:
Oak Ridge National Laboratory, Oak-Ridge, Tennessee 37831-6063
Get access

Abstract

A composite microstructure consisting of small α-Al2O3 particles dispersed in a β-NiAl coating matrix was synthesized by chemical vapor deposition (CVD). White the surface of a pure Ni substrate was being reacted with AlCl3 and H2 to form β-NiAl at a temperature of 1050 °C, the partial pressure of CO2 in the reactor was controlled via pulsing to nucleate and disperse 50 to 500 nm α-Al2O3 particles in the β-NiAl matrix. The relative amount of the α-Al2O3 phase increased with coating thickness as the rate of the β-NiAl formation decreased with time. These experimental observations suggest that the synthesis of a graded composite microstructure by the CVD method is feasible.

Type
Rapid Communication
Information
Journal of Materials Research , Volume 10 , Issue 12 , December 1995 , pp. 3000 - 3002
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

1Funkenbusch, A.W., Smeggil, J.G., and Bornstein, N.S., Metall.Trans. 16A, 1164 (1985).CrossRefGoogle Scholar
2Smialek, J.L., Metall. Trans. 22A, 739 (1992).Google Scholar
3Olson, W.E. and Gupta, D.K., US. Patent No. 4933 329 (1990).Google Scholar
4Rabin, B.H. and Shiota, I., MRS Bull., 14 (January 1995).Google Scholar
5Erodgan, F., MRS Bull., 43 (January 1995).Google Scholar
6Patnaik, P.C., Materials & Manufacturing Processes 4, 133 (1989).CrossRefGoogle Scholar
7Reich, A., Singhesier, L., and Wahl, C., in Proceedings ofthe EURO CVD 4, edited by Bloem, J., Verspui, G., and Wolff, L.R. (Phillips Center, Eindhoven, The Netherlands, 1983), pp. 122–129.Google Scholar
8Frederikson, E. and Carlsson, J-O., J. Chem. Vapor Dep. 1, 333 (1993).Google Scholar
9Hirai, T. and Goto, T., in Tailoring Multiphase and Composite Ceramics, edited by Tressler, R.E., Messing, G.L., Pantano, C.G., and Newnham, R.E. (Plenum Press, New York, 1986), p. 165.CrossRefGoogle Scholar
10Lee, W.Y., Lackey, W.J., Agrawal, P.K., and Freeman, G.B., J.Am. Ceram. Soc. 74, 2649 (1991).CrossRefGoogle Scholar
11Meier, S.M., Gupta, D.K., and Sheffler, K., J. Metals, 50 (March 1991).Google Scholar