X-ray diffraction examination of the rhombic modification of the lower niobium carbide
Journal Article
·
· Sov. Powder Metall. Met. Ceram. (Engl. Transl.); (United States)
The author perform the x-ray diffraction examination of crystal fragments separated from ingots to examine the rhombic modification of the lower niobium carbide. The Debye patterns of the annealed specimens containing 31-34% C show a set of lines whose reflection angle is similar to that of the beta-phase. In addition, the specimens contained a solid solution of carbon in niobium. The diffraction set of the detected reflections showed that the structure of the beta /SUB r/ modification of Nb/sub 2/C corresponds to the spatial groups.
- Research Organization:
- Institute of Problems of Materials Science
- OSTI ID:
- 6810580
- Journal Information:
- Sov. Powder Metall. Met. Ceram. (Engl. Transl.); (United States), Vol. 25:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
NIOBIUM CARBIDES
X-RAY DIFFRACTION
ANNEALING
CARBON
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALS
DEBYE-SCHERRER METHOD
MICROSTRUCTURE
ORTHORHOMBIC LATTICES
QUANTITY RATIO
SOLID SOLUTIONS
SPATIAL DISTRIBUTION
TEMPERATURE EFFECTS
TRIGONAL LATTICES
VERY HIGH TEMPERATURE
CARBIDES
CARBON COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIFFRACTION METHODS
DISPERSIONS
DISTRIBUTION
ELEMENTS
HEAT TREATMENTS
MIXTURES
NIOBIUM COMPOUNDS
NONMETALS
PHASE TRANSFORMATIONS
REFRACTORY METAL COMPOUNDS
SCATTERING
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
NIOBIUM CARBIDES
X-RAY DIFFRACTION
ANNEALING
CARBON
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALS
DEBYE-SCHERRER METHOD
MICROSTRUCTURE
ORTHORHOMBIC LATTICES
QUANTITY RATIO
SOLID SOLUTIONS
SPATIAL DISTRIBUTION
TEMPERATURE EFFECTS
TRIGONAL LATTICES
VERY HIGH TEMPERATURE
CARBIDES
CARBON COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIFFRACTION METHODS
DISPERSIONS
DISTRIBUTION
ELEMENTS
HEAT TREATMENTS
MIXTURES
NIOBIUM COMPOUNDS
NONMETALS
PHASE TRANSFORMATIONS
REFRACTORY METAL COMPOUNDS
SCATTERING
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies