Some Aspects of Interactions in the Mo–W–Al{sub 2}O{sub 3}–H{sub 2} System: Formation of Polyoxides

Journal Article · Sat Sep 15 00:00:00 EDT 2018 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774518050188· OSTI ID:22758193

Kostomarov, D. V.; Antonov, E. V. ^[1]

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1. Russian Academy of Sciences, Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,” (Russian Federation)

The possibility of formation of molybdenum and tungsten polyoxides in the Mo–W–Al{sub 2}O{sub 3}–H{sub 2} system at T = 2400 K and P = 1 bar in a controlled Ar + H{sub 2} atmosphere has been investigated by the method of thermodynamic analysis. The formation of polyoxides is found to occur both due to the processes involving Al{sub 2}O{sub 3} melt and in the absence of the latter. It is established that metals (Mo and W) and their mono-, di-, and even trioxides (in the latter case, mediated polymerization occurs) can be used as initial components to form polyoxides. It is shown that polyoxides themselves may interact with one of their main sources: Al{sub 2}O{sub 3} melt.

• OSTI ID: 22758193
• Journal Information: Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 5 Vol. 63; ISSN 1063-7745; ISSN CYSTE3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM OXIDES
ARGON
ATMOSPHERES
HYDROGEN
MOLYBDENUM OXIDES
POLYMERIZATION
TEMPERATURE RANGE 1000-4000 K
THERMODYNAMICS
TUNGSTEN OXIDES