Title:
A Pb-Bi-Sr-Ca-Cu-OXIDE POWDER MIX WITH ENHANCED REACTIVITY AND PROCESS FOR ITS MANUFACTURE
Document Type and Number:
WIPO Patent Application WO2001012557
Kind Code:
A9
Abstract:
An Oxide Precursor Powder from the Pb-Bi-Sr-Ca-Cu-O 2223 System can be produced by heat treating powder, produced using the Spray Pyrolysis Process as described in: GB2210605 or EP0681989 between 700 DEG C and 850 DEG C in an atmosphere containing between 0.1 % and 21 % O2. Heat Treatment of the pyrolysis powder under controlled conditions produces a powder with a particular phase composition, that is highly homogeneous and has a small particle size distribution, that is inherently more reactive than powders heat treated in the same way but produced using other processes.
Inventors:
WOODALL LEE (GB)
LIU RU-SHI (TW)
HSUEH YA-WEI (TW)
SCHMAHL WOLFGANG WILHELM (DE)
RAETH SEBASTIAN (DE)
LIU RU-SHI (TW)
HSUEH YA-WEI (TW)
SCHMAHL WOLFGANG WILHELM (DE)
RAETH SEBASTIAN (DE)
Application Number:
PCT/EP2000/006315
Publication Date:
November 28, 2002
Filing Date:
July 29, 2000
Export Citation:
Assignee:
MERCK PATENT GMBH (DE)
WOODALL LEE (GB)
LIU RU-SHI (TW)
HSUEH YA-WEI (TW)
SCHMAHL WOLFGANG WILHELM (DE)
RAETH SEBASTIAN (DE)
WOODALL LEE (GB)
LIU RU-SHI (TW)
HSUEH YA-WEI (TW)
SCHMAHL WOLFGANG WILHELM (DE)
RAETH SEBASTIAN (DE)
International Classes:
C01B13/34; C01G29/00; C01G1/00; H01B13/00; H01L39/24; (IPC1-7): C01G29/00; C01B13/34
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