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Casting Ceramic-Polymer Sheets

Published online by Cambridge University Press:  22 February 2011

Daniel J. Shanefield
Affiliation:
AT&T Technologies, P.O. Box 900, Princeton, N.J. 08540
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Abstract

Thin ceramic structures can be efficiently formed by the tape casting process, using a doctor blade for thickness control. A concentrated suspension of the ceramic precursor powder is made in a solvent system, with a polymeric binder, a dispersing agent, and other additives. For high performance ceramic applications, a non-aqueous solvent is generally preferred. The physical chemistry background leading to this choice is discussed, particularly in regard to the competing adsorptions of solvent, dispersant, and binder. Glyceryl trioleate is shown to be a useful dispersant for such systems, allowing dense compacts to be achieved, even with submicron particle sizes. Thus a refractory powder can be fired to nearly theoretical density at practical temperatures.

Type
Research Article
Copyright
Copyright © Materials Research Society 1985

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References

[l] Mistier, R. E. and Shanefield, D. J., in Ceramic Processing Before Firing, edited by Onoda, G. Y. and Hench, L. L. (J. Wiley, N.Y., 1978), pp. 411448.Google Scholar
[2] Shanefield, D. J. and Mistler, R. E., Bull. Amer. Ceramic Soc. 55, 213 (1976).Google Scholar
[3] Yau, W. W., et al, in Modern Size Exclusion Chromatography (J. Wiley, N.Y.,1979). p. 225.Google Scholar
[4] Mistler, R. E. and Shanefield, D. J., Bull. Amer. Ceramic Soc. 53, 564 (1974).Google Scholar
[5] Mistler, R. E. and Shanefield, D. J., Bull. Amer. Ceramic Soc. 57, 689 (1976).Google Scholar
[6] Shanefield, D. J. and Mistler, R. E., Bull. Amer. Ceramic Soc. 53, 416 (1974); H. W. Stetson, et al, U.S. Patent 3,698,923; J. C. Williams, in Teatise on Materials Science and Engineering, Vol.9, edited by R. Y. Wang (Acad. Press, 1976), pp. 173–198.Google Scholar
[7] ASTM D-1356 and E-20, Part 33.Google Scholar

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