Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1993-08-13
1994-11-29
Group, Karl
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
264 9, 501137, C01G 2300
Patent
active
053688341
ABSTRACT:
Titanate ceramic materials are made by forming a common solution (10) of barium acetate, strontium acetate, isopropyl titanate, lactic acid and water, forming a mist of particles of approximately 50 um or smaller, directing a carrier stream of gas (14) through the mist into a reaction zone in a furnace (20) where the material is pyrolyzed and then collected as a powder in a filter (24) or deposited onto a substrate. The tetra-isopropyl titanate and lactic acid may be replaced by commercially available titanium ammonium lactate. In a first embodiment the carrier gas is an oxidizing gas while in a second embodiment it is an inert gas resulting in powder having greater density.
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Single-Crystal Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7 Particle Formation by Spray Pyrolysis by T. Kodas et al.-Apr. 25, 1989.
Aerosol Fabrication of High T.sub.c Superconducting Thick Film by M. Bedekar et al.-Apr. 25, 1989.
Microstructure of S.sub.r T.sub.1 O.sub.3 Spherical Fine Particles Prepared by Ultrasonic Spray Pyrolysis of Metal Alkoxide by O. Sakurai et al.-Feb. 18, 1986.
Kulwicki Bernard M.
Lukasiewicz Stanley J.
Lynch David F.
Baumann Russell E.
Donaldson Richard L.
Grossman Rene E.
Group Karl
Jones Deborah
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