Compositions: ceramic – Ceramic compositions – Pore-forming
Patent
1988-11-17
1991-12-31
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Pore-forming
501 12, 501 33, 501 40, 501 80, 501 85, 501 96, 501 97, C03C 332, C04B 3802, C04B 3810, C04B 3558
Patent
active
050772414
ABSTRACT:
Discrete, free-flowing, ceramic microbubbles consist essentially of at least one of a non-oxide component and an oxide component having diameters in the range of 1 to 300 micrometers and each having a wall thickness of less than 10 percent of the diameter of the bubble. In the process of the invention, a sol precursor and a suitable liquid, referred to as a bloating agent, when added to a bubble promoting medium under proper conditions, provide green gelled microbubbles which after firing are ceramic microbubbles having wall thicknesses less than 10 percent of the diameter of the bubbles. The microbubbles are non-vitreous, sol-gel derived, fine microstructured, uniform, hollow, smooth, and are either essentially all oxide or non-oxide or combinations of both.
REFERENCES:
patent: 2978340 (1961-04-01), Veatch et al.
patent: 3709706 (1973-01-01), Sowman
patent: 3792136 (1974-02-01), Schmitt
patent: 3975194 (1976-08-01), Farnand et al.
patent: 4039480 (1977-08-01), Watson et al.
patent: 4279632 (1981-07-01), Frosch
patent: 4290847 (1981-09-01), Johnson et al.
patent: 4349456 (1982-09-01), Sowman
patent: 4421562 (1983-12-01), Sands
patent: 4637990 (1987-01-01), Torobin
patent: 4772511 (1988-09-01), Wood et al.
patent: 4777154 (1988-10-01), Torobin
U.S.S.N. 07/314,752, "Thin Silica Flakes and Method of Making".
A. Westwood et al., "High Technology Ceramics", Cutting Edge Technologies, National Academy of Engineering, National Academy Press, Washington, DC, (1984), pp. 117-130.
U.S.S.N. 151,819, "High Stability Porous Zirconium Oxide Spherules".
Chemical Abstracts, vol. 107, No. 20, Nov., 1987, p. 389, Abstract No. 182128f, Columbus, Ohio.
Moh Kyung H.
Sowman Harold G.
Wood Thomas E.
Dixon Jr. William R.
Griswold Gary L.
Kirn Walter N.
Marcheschi Michael A.
Minnesota Mining and Manufacturing Company
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