Superconductor technology: apparatus – material – process – Processes of producing or treating high temperature... – Producing powder or short fiber
Patent
1995-05-12
1997-03-25
McGinty, Douglas J.
Superconductor technology: apparatus, material, process
Processes of producing or treating high temperature...
Producing powder or short fiber
505481, 505121, 505125, 505126, 505737, 505807, 505823, 505733, 505501, 505780, 505776, 505782, 505520, B05D 108, C04B 3545, C04B 35505, H01L 3912
Patent
active
056144725
ABSTRACT:
The invention relates to a spray pyrolyric process for the preparation of multi-element metal oxide powders useful as precursors of high temperature superconductor ceramics. Aerosols of aqueous solutions containing corresponding metal salts admixed in the required stoichiometric proportion are sprayed through an independently operated hydrogen/oxygen flame in such a way that a flame temperature of 800.degree.-1100.degree. C. is maintained to form said powders. Any contact of the aerosols and powders generated during the process with carbon or carbon-containing compounds or materials is strictly avoided.
REFERENCES:
patent: 5122505 (1992-06-01), Gusman et al.
patent: 5496799 (1996-03-01), Yoshida et al.
Nishio, K., et al., "Preparation of silver-yttrium barium copper oxide composite fine powder by spray-pyrolysis", Advances in Superconductivity II, pp. 873-876 (Abstracts only).
Merkle, Brian D., et al., "Superconducting yttrium barium copper oxide particulate produced by total consumption burner processing", Mater. Sci. Eng., A124(1), 31-8 (Abstracts only).
Feldmann-Schlobohm G unther
Kuntz Matthias
M uller Bernd
Raulin Dietmar
Riddle Rodney
McGinty Douglas J.
Merck Patent Gesellschaft mit beschrankter Haftung
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