Effect of tantalum concentration and properties of the carbide and cobalt phases in the TiC-WC-TaCCo hard metals
In order to study the effect of tantalum on the structure and properties of the complex carbides (Ti, W, Ta) C, the authors prepared solid solutions (Ti, W, Ta) C with the molar concentration ration TiC: WC = 64:36 (35:65 by weight). It is shown that the electrical resistivity of the alloys decreases with increasing amount of tantalum carbide, i.e., the electrical conductivity increases. This is caused by the increased concentration of the conducting (free) electrons and the increased Me-Me bond strength. Alloying with tantalum considerably changes the physicomechanical properties of the carbide constituent of th hard metals, viz., the (Ti, W, Ta) C solid solution. The concentration of the dissolved tungsten and titanium in the cobalt phase is determined by the carbon content in the alloy.
- Research Organization:
- All-Union ScientificResearch Institute of Hard Metals
- OSTI ID:
- 7046009
- 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
TANTALUM
METALLURGICAL EFFECTS
TANTALUM CARBIDES
ELECTRIC CONDUCTIVITY
HARDNESS
TITANIUM CARBIDES
TUNGSTEN CARBIDES
CARBON
CHEMICAL BONDS
COBALT ALLOYS
DIAGRAMS
DUCTILITY
MEDIUM TEMPERATURE
MICROSTRUCTURE
PRESSURE EFFECTS
QUANTITY RATIO
SOLID SOLUTIONS
TEMPERATURE EFFECTS
VERY HIGH PRESSURE
VERY HIGH TEMPERATURE
ALLOYS
CARBIDES
CARBON COMPOUNDS
CRYSTAL STRUCTURE
DISPERSIONS
ELECTRICAL PROPERTIES
ELEMENTS
MECHANICAL PROPERTIES
METALS
MIXTURES
NONMETALS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SOLUTIONS
TANTALUM COMPOUNDS
TENSILE PROPERTIES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNGSTEN COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
360204 - Ceramics
Cermets
& Refractories- Physical Properties