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Title: Study of the synthesis of nanocrystalline mixed tantalum–zirconium carbide

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.
Authors:
; ; ; ;  [1]
  1. Russian Academy of Sciences, Kurnakov Institute of General and Inorganic Chemistry (Russian Federation)
Publication Date:
OSTI Identifier:
22471903
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 78; Journal Issue: 12; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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