Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-25T17:44:56.607Z Has data issue: false hasContentIssue false

Microstructural Characterization of Multiphase Coatings Produced By Chemical Vapor Deposition

Published online by Cambridge University Press:  21 February 2011

R. A. Lowden
Affiliation:
Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee
K. L. More
Affiliation:
Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee
T. M. Besmann
Affiliation:
Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee
R. D. James
Affiliation:
Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee
Get access

Abstract

Chemical vapor deposition has been utilized to produce ternary, multiphase coatings of various compositions of silicon carbide (SiC) with Ti, Cr, and Mo. Thermodynamic calculations have been performed for a variety of experimental conditions in each system. Scanning, transmission and analytical electron microscopy, and X-ray diffraction techniques have been used to characterize the microstructures and to determine compositions.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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

1.Mah, T.., Mendiratta, M. G., and Lipsitt, H. A., “Fracture Toughness and Strength of Si3 N4-TiC Composites,” Ceram. Bulletin, 60(11) 1229–40 (1981).Google Scholar
2.Wei, G. C. and Becher, P. F., “Improvements in the Mechanical Properties in SiC by the Addition of TiC Particles,” J. Am. Ceram. Soc. 6(8), 571–4 (1984).Google Scholar
3.Lackey, W. J. et al., “Codeposition of Dispersed Phase Ceramic Composites,” pp. 1008–27 in Tenth Int'l. Conference on Chemical Vapor Deposition, ed. Cullen, G. W., The Electrochemical Society, Princeton, N.J., 1987.Google Scholar
4.Stinton, D. P. et al., “Fabrication of Ceramic-Ceramic Composites by Chemical Vapor Deposition,” pp. 668–76 in Ceramic Engineering and Science Proceedings, Vol.5, July/August 1984, The American Ceramic Society, Columbus, Ohio.Google Scholar
5.Nickl, J. J., Schweitzer, K. K., and Luxenberg, P., “Gas-Phase Separation in the Ti-Si-C System,” J. Less-Common Metals 26, 335–53 (1972).Google Scholar
6.Hirai, T., “CVD of Si3N4 and Its Composites,” pp. 329345 in Emergent Process Methods for High-Technology Ceramics. North Carolina State University, ed. Davis, R. F., Palmour, H. III, and Porter, R. L., Plenum Pr., New York, 1984.Google Scholar
7.Goto, T. and Hirai, T., “Preparation of SiC-TiC In-Situ Composites by Chemical Vapor Deposition,” pp. 1070–79 in Proc. Xth International Conference CVD, 1987, The Electrochemical Society, Inc., Pennington, N.J.Google Scholar
8.Touanen, M., Teyssandier, F., and Duccarroir, M., “Theoretical Approach to Chemical Vapour Deposition in the Atomic System Ti-Si-C-Cl-H,” J. Mater. Sci. Letters, 8, 98101 (1989).Google Scholar
9.Nowotny, H., et al., “The Ternary System: Molybdenum-Silicon-Carbon,” Mh. Chem. 85(1) 255–72 (1954).Google Scholar
10.Brewer, L. and Krikorian, O., “Reactions of Refractory Silicides with Carbon and Nitrogen,” J. Electrochem, Soc. 103(1), 3850 (1956).Google Scholar
11.Bates, H. E., Wald, F., and Weinstein, M., “A Contribution to the Question of Compatibility Between Metals and Certain High Modulus Fibers,” in SAMPE Advanced Fibrous Reinforced Composites, Vol.10, E41–E51, 1966.Google Scholar
12.Besmann, T. M. and Spear, K. E., “Analysis of the Chemical Vapor Deposition of Titanium Diboride I. Equilibrium Thermodynamic Analysis,” J. Electrochem. Soc., 124, 786, (1977).Google Scholar
13.Spear, K. E., “Applications of Phase Diagrams and Thermodynamics to CVD,” pp. 1–16 in Proceedings of the Seventh International Conference on Chemical Vapor Deposition, ed. T. O. Sedgwick and H. Lydtin, The Electrochemical Society, Princeton, N.J., 1979.Google Scholar
14.Kingdon, A. I. and Davis, R. F., “The Application of Thermodynamic Calculations to Chemical Vapor Deposition Processes,”pp. 317–28 in Emergent Process Methods for High Technology Ceramics, North Carolina State University, ed. Davis, R. F., Palmour, H. III, and Porter, R. L., Plenum Pr., New York 1984.Google Scholar
15.Besmann, T. M., “SOLGASMIX-PV, A Computer Program to Calculate Equilibrium Relationships in Complex Chemical Systems,” ORNL/TM-5775, Union Carbide Corp., Nuclear Div., Oak Ridge National Laboratory, April 1977.Google Scholar
16.Jeitschko, W. and Nowotny, H., “The Crystal Structure of Ti3 SiC2 - A New Complex Carbide,” Mh, Chem. 98(2), 329–37 (1967).Google Scholar