Preparation of strontium titanate ceramics and internal boundary layer capacitors by the Pechini method
High purity, fine-grain size, SrTiO/sub 3/ ceramics were fabricated from powders which were chemically derived by the Pechini method. The preparation is based upon a thermally polymerizable water-ethylene glycol-citric acid system in which a wide range of metal alkoxides, carbonates, and metal salts are soluble. The process is a closed system, and lends itself to the preparation of complex oxides which can contain numerous additives and dopants. In this study, W-doped SrTiO/sub 3/ powders were prepared with various Sr:Ti ratios, and fine grain internal boundary layer capacitors were fabricated by controlled segregation in sintering. Characteristics of the resin, powder, microstructures, and electrical properties are reported. The advantages and disadvantages of this method of chemical preparation for ceramic materials are noted. 4 references, 4 figures, 1 table.
- Research Organization:
- Univ. of Illinois, Urbana
- DOE Contract Number:
- AC02-76ER01198
- OSTI ID:
- 5601934
- Journal Information:
- Mater. Res. Soc. Symp. Proc.; (United States), Vol. 32
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STRONTIUM TITANATES
CHEMICAL PREPARATION
DIELECTRIC PROPERTIES
CERAMICS
CITRIC ACID
FABRICATION
GLYCOLS
MICROSTRUCTURE
WATER
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
CARBOXYLIC ACIDS
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
HYDROGEN COMPOUNDS
HYDROXY ACIDS
HYDROXY COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
SYNTHESIS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360204 - Ceramics
Cermets
& Refractories- Physical Properties