Hostname: page-component-8448b6f56d-t5pn6 Total loading time: 0 Render date: 2024-04-16T08:20:32.209Z Has data issue: false hasContentIssue false
  • English
  • Français

Binder System Containing Polycarbosilane and Polysiiazane for Injection-Molded Si3N4 Parts

Published online by Cambridge University Press:  25 February 2011

Sophia R. Su
Sophia R. Su*
Affiliation:
GTE Laboratories Incorporated 40 Sylvan Road Waltham, MA 02254, U.S.A.
Get access

Abstract

Polycarbosilane and polysilazane, precursors of SiC and Si3N4, have been incorporated into the binder system for injection-molded Si3N4-based parts. Property requirements for these precursors as the injection-molding binder are briefly described. The binder removal mechanism is proposed and discussed based on the experimental results. Instead, the gas diffusion effect, rather than fluid wicking, is a key factor. Controlling the thermal decomposition rate of the binder is the key for achieving crack-free dense sintered parts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 383
Copyright
Copyright © Materials Research Society 1992

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. Edirishinge, M.J. and Evans, J.R.G., Int. J. High Technology Ceramics 2, 1986.Google Scholar
2. (a) German, R.M., Int. J. Powder Metallurgy 23, 4, 237, 1987; (b) M.J. Cima, J.A. Lewis, and A.D. Dove, J. Am. Ceram. Soc. 72, 7, 1192, 1989.Google Scholar
3. Mazdiyasni, K.S., West, R., and David, L.D., Am. Ceram. Soc. 61, 504, 1978.CrossRefGoogle Scholar
4. Yajima, S., Am. Ceram. Cos. Bull. 62, 8, 893, 1983.Google Scholar
5. (a) Zoeckler, M.T. and Laine, R.M., J. Org. Chem., 48, 2539, 1983; (b) R.M. Laine and Y. Blum, U.S. Patent Application No. 06/727, 414.CrossRefGoogle Scholar
6. Mutsuddy, B.C., Ceramics International 13, 41, 1987.CrossRefGoogle Scholar
7. Schwarts, K.B., Rowcliffe, D.J., Blum, Y.D., and Laine, R.M., J. Am. Ceram. Soc., 1988.Google Scholar
8. Schilling, C.L. Jr., Wesson, P., and Williams, T.C., Am. Ceram. Soc. Bull. 62, 8, 899, 1983.Google Scholar
9. Su, S.R., U.S. Patent No. 4,939, 197, July 3, 1990.Google Scholar
10. Seyferth, D., Wiseman, G.H., Pontasse, c.A., Schwark, J.M., and Yu, Y.F., Polym. Prep. 28, 1, 389, 1987.Google Scholar
11. Su, S.R., “Binder Design for Fabricating Internal Crack-Free Injection-Molded Si3N4-Based Ceramics,” Proceedings of Symposium Q, 1991 MRS Fall Meeting, Boston, December 2-6, 1991.CrossRefGoogle Scholar
12. (a) Bandyopadhyay, G. et al. , U.S. Patent No. 4,708,838, 1987; (b) K.W. French et al., U.S. Patent No. 4,445,713, 1984; (c) G. Bandyopadhyay and K. French, J. Eng. for Gas Turbines and Powder 108, 536, 1986.Google Scholar
13. Koenigsberg, W.D. and Neil, J.T., Nondestructive Testing of High Performance Ceramics, Varz, A. and Synder, J., eds., Am. Ceram. Soc. Inc. 539, 1987.Google Scholar