Coating processes – Particles – flakes – or granules coated or encapsulated – Applying superposed diverse coatings or coating a coated base
Patent
1994-06-02
1998-02-10
Utech, Benjamin
Coating processes
Particles, flakes, or granules coated or encapsulated
Applying superposed diverse coatings or coating a coated base
427220, 4273762, 4274192, 4274198, 4274301, 4274432, B05D 700
Patent
active
057166714
ABSTRACT:
A method for coating ceramic fibers such as Al.sub.2 O.sub.3 fibers includes immersing the Al.sub.2 O.sub.3 fibers in a polyelectrolyte solution. After the polyelectrolyte is allowed to adsorb on the fibers, the unabsorbed polyelectrolyte is washed from the fibers with a distilled water. The fibers are then deposited in an oxide solution such as SnO.sub.2. The SnO.sub.2 is allowed to adsorb on the fibers, and then the unabsorbed SnO.sub.2 is washed from the fibers with the distilled water. The fibers are then sintered at a temperature ranging from 400.degree. C. to 1200.degree. C.
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Garino, T., "Heterocoagulation as an Inclusion Coating Technique for
Fischer, H.E., et al., "Fiber Coatings Derived from Molecular Precursors," MRS Bol. pp. 59, 60, 61, 62, 63, 64, 65. (1991).
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Cranmmer, D. C., "Fiber Coating and Characterization," Ceramic Bulletin, pp. 415-419, 1989.
Goettler Richard W.
Pak Sung S.
Tolley Archie N.
Edwards Robert J.
Kalka Daniel S.
The Babcock & Wilcox Company
Utech Benjamin
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