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Sol-Gel Derived Ceramic Bubbles

Published online by Cambridge University Press:  15 February 2011

Kyung H. Moh
Kyung H. Moh*
Affiliation:
3M Company, St. Paul, MN.
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Abstract

Sol-gel derived ceramic bubbles include shaped and fired, porous or impermeable nonvitreous ceramic microcapsules of metal oxide and non-oxide, are made by non-melt process involving the equilibrium boiling point method with controlled thermal gelation. Discrete, free-flowing, ceramic microbubbles consist of a non-oxide component and/or an oxide component having diameters in the range of I to 300 micrometers and each having a wall thickness of less than 10 percent of the diameter of the bubble. In this process, a sol precursor and a bloating agent, when added to a bubble promoting medium under proper conditions, provide green gelled microbubbles which after firing are strong, well formed, ceramic microbubbles. The microbubbles are non-vitreous, sol-gel derived, fine microstructured, uniform, hollow, smooth, and are essentially all oxide or non-oxide or combinations of both. The microbubbles can be used as fillers for metal, glass, ceramic, and polymer or filled with a selected solid, liquid or gas for purpose of storing, transporting, or facilitating the use of the same.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 372: Symposium W1 – Hollow and Solid Spheres and Microspheres--Science and Technology , 1994 , 15
Copyright
Copyright © Materials Research Society 1995

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References

1. Schmitt, C.R., U.S. Patent No. 3,792,136 (12 Feb. 1974).Google Scholar
2. Watson, D.R., Carithers, V.G., and Drown, H.L., U.S. Patent No. 4,039,480 (2 Aug. 1977).Google Scholar
3. Sarikaya, Y. and Akinc, M., Ceramics International, 14, 239–244 (1988).Google Scholar
4. Beck, W.R. and O'Brien, D.L., U.S. Patent No. 3,365,315 (23 Jan. 1968).Google Scholar
5. Howell, P.A., U.S. Patent No. 4,391,646 (5 Jul. 1983).Google Scholar
6. Marshall, H.J., U.S. Patent No. 4,767,726 (30 Aug. 1988).Google Scholar
7. Sowman, H.G., U.S. Patent No. 4,349,456 (14 Sept. 1982).Google Scholar
8. Moh, K.H., Sowman, H.G., and Wood, T.E., U.S. Patent No. 5,077,241 (31 Dec. 1991).Google Scholar
9. Sowman, H.G., U.S. Patent No. 3,795,524 (5 March 1974)Google Scholar
10. Yoshimura, M., Nishioka, M., and Somiya, S., J. Mater. Sci. Lett. 6, 1463 (1987)Google Scholar