Study of the synthesis of nanocrystalline mixed tantalum–zirconium carbide

Journal Article · Tue Dec 15 04:00:00 EST 2015 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S106377881512011X· OSTI ID:22471903

Simonenko, N. P.; Ezhov, Yu. S.; Sevastyanov, V. G.; Kuznetsov, N. T. ^[1]

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1. Russian Academy of Sciences, Kurnakov Institute of General and Inorganic Chemistry (Russian Federation)

The synthesis conditions of refractory tantalum–zirconium carbide Ta{sub 0.8}Zr{sub 0.2}C on the basis of Ta{sub 2}O{sub 5}–ZrO{sub 2}–C ultrafine initial blend prepared via the sol–gel method are explored. The initial blend is prepared via hydrolysis in the presence of Ta(OC{sub 5}H{sub 11}){sub 5} and [Zr(O{sub 2}C{sub 5}H{sub 7}){sub 4–x}(OC{sub 5}H{sub 11}){sub x}] carbon source polymer solutions, gel drying, and carbonization at a temperature of 450°C. A series of the carbothermal synthesis experiments is implemented at various temperatures and exposure times. The synthesis conditions are shown to affect not only the phase composition of products but also their oxidation resistance related to the particle size.

• OSTI ID: 22471903
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 12 Vol. 78; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON SOURCES
CARBONIZATION
CRYSTALS
DRYING
HYDROLYSIS
NANOSTRUCTURES
OXIDATION
PARTICLE SIZE
POLYMERS
REFRACTORIES
SOL-GEL PROCESS
SYNTHESIS
TANTALUM OXIDES
TEMPERATURE DEPENDENCE
ZIRCONIUM CARBIDES
ZIRCONIUM OXIDES