La[sub 2]Ti[sub 2]O[sub 7] ceramics
Journal Article
·
· Journal of the American Ceramic Society; (United States)
- Materials Research Lab., Pennsylvania State Univ., University Park, PA (United States)
This paper reports that La[sub 2]Ti[sub 2]O[sub 7] powders are prepared using three different techniques. Single-phase material is obtained at 1150[degrees] C by calcination of mixed oxides, at 1000[degrees] C by molten salt synthesis, and at 850[degrees] C by evaporative decomposition of solutions. Particle sizes and morphologies of the powders differ substantially as does the sintered microstructures and dielectric properties. Very dense (99%), translucent, grain-oriented lanthanum titanate is fabricated by hot-forging at 1300[degrees] C under a 200-kg load. Anisotropy is demonstrated by X-ray diffraction, scanning electron microscopy, thermal expansion, and dielectric measurements.
- OSTI ID:
- 6906422
- Journal Information:
- Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 74:1; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Technical Report
·
Thu Dec 31 23:00:00 EST 1981
·
OSTI ID:6578900
The production of grain oriented lanthanum titanate (La{sub 2}Ti{sub 2}O{sub 7}) ceramics by uniaxial hot-forging process for improved fracture toughness
Journal Article
·
Tue Jul 01 00:00:00 EDT 2008
· Materials Research Bulletin
·
OSTI ID:21144033
Formation mechanism and characteristics of lanthanum-doped BaTiO{sub 3} powders and ceramics prepared by the sol–gel process
Journal Article
·
Sat Aug 15 00:00:00 EDT 2015
· Materials Characterization
·
OSTI ID:22476134
Related Subjects
36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIELECTRIC PROPERTIES
DIFFRACTION
ELECTRICAL PROPERTIES
EXPANSION
FABRICATION
FORGING
GRAIN ORIENTATION
LANTHANUM COMPOUNDS
MATERIALS WORKING
MICROSTRUCTURE
ORIENTATION
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
RARE EARTH COMPOUNDS
SCATTERING
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMAL EXPANSION
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIELECTRIC PROPERTIES
DIFFRACTION
ELECTRICAL PROPERTIES
EXPANSION
FABRICATION
FORGING
GRAIN ORIENTATION
LANTHANUM COMPOUNDS
MATERIALS WORKING
MICROSTRUCTURE
ORIENTATION
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
RARE EARTH COMPOUNDS
SCATTERING
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMAL EXPANSION
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION