Influence of pressure on the x-ray spectra and electronic structure of vanadium oxycarbide and vanadium oxynitride

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · J. Struct. Chem. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00747994· OSTI ID:5913919

Cherkashenko, V M; Kurmaev, E Z; Zainulin, Yu G

We undertook an investigation of the influence of thermobaric treatment on the electron-energy spectrum of the oxycarbide VC/sub 0.44/O/sub 0.48/ and the oxynitride VN/sub 0.46/ /times/ O/sub 0.50/ of vanadium. For this purpose we obtained the V K/sub /beta/5/ x-ray emission spectra of the compounds in their original state and after thorough compression. The thermobaric treatment of these compounds were carried out by holding the original samples for 1-2 min under pressures of 7.7 and 9.0 GPa at temperatures of 1800 and 1600/degree/C, respectively. This treatment resulted in an increase in the lattice constant from 4.1360 to 4.1647 /angstrom/ in the case of the oxycarbide and from 4.1161 to 4.1370 /angstrom/ in the case of the oxynitride with a corresponding increase in density. The calculations of the number of particles in the unit cell showed that the filling of structural vacancies in the unit cell takes place in both compounds. The study of the V K /sub /beta/5/ x-ray emission spectra was carried out on a FRS-KD-1 x-ray fluorescence spectrometer.

• Research Organization: Ural Scientific Center (USSR)
• OSTI ID: 5913919
• Journal Information: J. Struct. Chem. (Engl. Transl.); (United States), Journal Name: J. Struct. Chem. (Engl. Transl.); (United States) Vol. 29:2; ISSN JSTCA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBON COMPOUNDS
CHALCOGENIDES
CHEMICAL ANALYSIS
COMPRESSION
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRONIC STRUCTURE
ENERGY LEVELS
ENERGY RESOLUTION
ENERGY SPECTRA
FABRICATION
HEAT TREATMENTS
LATTICE PARAMETERS
MATERIALS WORKING
NITRIDES
NITROGEN COMPOUNDS
NONDESTRUCTIVE ANALYSIS
OXIDES
OXYCARBIDES
OXYGEN COMPOUNDS
PNICTIDES
POINT DEFECTS
PRESSURE EFFECTS
RESOLUTION
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
THERMOMECHANICAL TREATMENTS
TRANSITION ELEMENT COMPOUNDS
VACANCIES
VANADIUM COMPOUNDS
VANADIUM NITRIDES
VANADIUM OXIDES
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS
X-RAY SPECTRA