Superconductor technology: apparatus – material – process – High tc superconducting material – Containing transition metal oxide with rare earth or...
Patent
1996-11-26
1998-09-29
McGinty, Douglas J.
Superconductor technology: apparatus, material, process
High tc superconducting material
Containing transition metal oxide with rare earth or...
505425, 505481, 505121, 505125, 505126, 505780, 505776, 505782, 505510, 505737, 505807, 505823, 505501, H01L 3912, B05D 108, C04B 35505, C04B 3545
Patent
active
058145850
ABSTRACT:
The invention relates to a spray pyrolytic 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: 5047391 (1991-09-01), Bock et al.
patent: 5106829 (1992-04-01), Quandri et al.
patent: 5114702 (1992-05-01), Pederson et al.
patent: 5114909 (1992-05-01), Shi
patent: 5122505 (1992-06-01), Gsuman et al.
patent: 5140005 (1992-08-01), Rangaswamy et al.
patent: 5162300 (1992-11-01), Bock et al.
patent: 5177055 (1993-01-01), Kinsman et al.
patent: 5268337 (1993-12-01), Katz et al.
patent: 5300486 (1994-04-01), Hults et al.
patent: 5324712 (1994-06-01), Su
patent: 5340796 (1994-08-01), Cava et al.
patent: 5496799 (1996-03-01), Yoshida et al.
patent: 5502029 (1996-03-01), Doi et al.
patent: 5523285 (1996-06-01), Balachandran
patent: 5541154 (1996-07-01), Neubacher et al.
patent: 5569641 (1996-10-01), Smith
patent: 5614472 (1997-03-01), Riddle et al.
patent: 5646097 (1997-07-01), Tkaczyk 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, Nov. 1989.
Merkle, Brian D., et al., "Superconducting yttrium barium copper oxide particulate produced by total consumption burner processing", Mater. Sci. Eng., A124(1), 31-38, Apr. 1990.
Sparvieri, N., "Grain coupling contribution to superconductivity in ceramic YBCO (yttrium barium copper oxide) by magnetic measurements", Mater. Chem. Phys., 28(1) (1991), 133-9.
Zachariah, M.R., "Flame synthesis of high Tc superconductors", Combust. Flame, 87(1) (1991), 100-103.
Zachariah, Michael R., et al., "Aerosol processing of yttrium barium copper oxide superconductors in a flame reactor", J. Mater. Res., 6(2) (1991), 264-9.
Feldmann-Schlobohm Gunther
Kuntz Matthias
Muller Bernd
Raulin Dietmar
Riddle Rodney
McGinty Douglas J.
Merck Patent Gesellschaft mit beschrankter Haftung
LandOfFree
Bi(Pb)SrCaCuO superconductors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bi(Pb)SrCaCuO superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bi(Pb)SrCaCuO superconductors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-686165