A study of ceramic structures during sintering of cerium and tantalum oxides

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Glass Ceram. (Engl. Transl.); (United States)

OSTI ID:5573381

Podkletnov, E E; Akopov, F A; Dolgireva, N G; Val'yano, G E; Vlasov, A S

A study of the ceramic formation processes in the CeO/sub 2/-Ta/sub 2/O/sub 5/ binary system is of interest when developing the production technology of high-refractory current-carrying ceramics. Cerium dioxide (TsOOP grade) containing 99.99% CeO/sub 2/ by weight and tantalum pentoxide (pure grade) containing 99.95% Ta/sub 2/O/sub 5/ were used as the raw materials. Briquettes were compacted and fired. The briquettes were then crushed and milled in a planetary mill and the absence of iron grind contaminant was checked on a sample using ammonium thiocyanate. Ceramic specimens were made and fired. The ceramic materials were prepared containing 1,3,5,15, and 50% Ta/sub 2/O/sub 5/. The authors determined the ultimate compressive and tensile strength, and the dynamic modulus of elasticity on the fired specimens. After synthesis, x-ray phase analysis of the material showed that a fluorite-type cubic solidsolution forms the predominant phase in all specimens. The results of the studies can be used for developing electrically conducting ceramics intended for high-temperature power installations.

• Research Organization: Institute of High Temperature, Academy of Sciences, Moscow
• OSTI ID: 5573381
• Journal Information: Glass Ceram. (Engl. Transl.); (United States), Journal Name: Glass Ceram. (Engl. Transl.); (United States) Vol. 42:7; ISSN GLCEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
BRIQUETTING
CERAMICS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
COMMINUTION
COMPRESSION STRENGTH
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DISPERSIONS
ELASTICITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FABRICATION
GRINDING
HEAT TREATMENTS
MACHINING
MECHANICAL PROPERTIES
MIXTURES
MOLDING
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWER TRANSMISSION
RARE EARTH COMPOUNDS
REFRACTORIES
REFRACTORY METAL COMPOUNDS
SINTERING
SOLID SOLUTIONS
SOLUTIONS
TANTALUM COMPOUNDS
TANTALUM OXIDES
TENSILE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
ULTIMATE STRENGTH