Carbides of transition metals: Properties, application and production. Review. Part 2. Chromium and zirconium carbides

The properties, application, and methods for producing chromium zirconium carbides are considered. These oxygen-free refractory metal-like compounds. As a result, they characterized by high values of thermal electrical conductivity. Their hardness is relatively high. Chromium exhibit significant chemical resistance in aggressive environments. For these reasons, have found application modern technology. carbide used mainly as component surfacing mixtures to create protective coatings that resist intensive abrasive wear, including at elevated temperatures (up 800 °C) oxidizing This compound also the manufacture tungsten-free hard alloys steels. carbide, along with vanadium grain growth inhibitor WC – Co alloys. Powdered can be polish surface items made ferrous non-ferrous metals. properties compounds depend on content impurities dispersion (particle size). To solve specific problem associated use compounds, it important choose right method their preparation, determine permissible initial components. leads existence different synthesis carbides. main preparation are: from simple substances (metals carbon), metallothermal carbothermal reduction. Plasma-chemical (vapor-gas phase deposition) obtain nanopowders. A characteristic given each methods. Information possible mechanism processes presented.