YBCO oxalate coprecipitation in alcoholic solutions
Journal Article
·
· Journal of the American Ceramic Society; (United States)
- Technion, Haifa (Israel). Chemical Engineering Dept.
A process for synthesis of ultrafine YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] powder by oxalate coprecipitation from nearly saturated solutions of the metal acetates and a 2-propanol solution of oxalic acid was developed. The coprecipitation was complete within 5 min in an ice bath at 0--2 C. The final stoichiometry was Y:Ba:Cu = 1:1.994:2.991, while the particle size and surface area in the homogeneous coprecipitated powder were 0.1--0.2 [mu]m and 24.9 m[sup 2] [center dot] g[sup [minus]1], respectively. Because of the uniformity and particle size of the coprecipitated material, reactive YBCO powder with a surface area of 1.7 m[sup 2] [center dot] g[sup [minus]1] can be obtained at 780 C in about 12 h.
- OSTI ID:
- 7267492
- Journal Information:
- Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:6; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CARBOXYLIC ACID SALTS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
COPRECIPITATION
DATA
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
NUMERICAL DATA
OXALATES
OXIDES
OXYGEN COMPOUNDS
PRECIPITATION
SEPARATION PROCESSES
SUPERCONDUCTORS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CARBOXYLIC ACID SALTS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
COPRECIPITATION
DATA
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
NUMERICAL DATA
OXALATES
OXIDES
OXYGEN COMPOUNDS
PRECIPITATION
SEPARATION PROCESSES
SUPERCONDUCTORS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES