What is the chemical stability of niobium carbide

What is NbC powder?

Niobium carbide is a green cubic crystal with a metal appeal belonging to a salt chloride-type cubic crystal system. Its melting factor is high, its solidity is high (microhardness is 235GPa, which is harder than corundum), as well as its chemical stability is great (it is secure at one 000 ~ 1 100 ℃ and also swiftly oxidizes to niobium pentoxide over one 100 ℃). Insoluble substances are cold and hot hydrochloric acid, sulfuric acid, and also nitric acid, as well as they are only soluble in the warm combined service of hydrofluoric acid as well as nitric acid. Niobium carbide is very easy to melt in titanium carbide, zirconium carbide, tungsten carbide, as well as various other compounds, causing an isomorphic strong solution, so it can be used to make cermet, heat-resistant alloy, as well as cemented carbide. The sealed carbide with niobium carbide has refined grain as well as improved all-around efficiency. The cutting tools made from it also have great thermal solidity, thermal shock resistance, and thermal oxidation resistance.

? As one of the raw materials of composite ceramic products, composite ceramic products constructed from composite ceramic products are often used in wear-resistant components, cutting tools, electrodes, and various other areas because of their high solidity, high melting point, excellent chemical security, and electric conductivity.

Cemented carbide can not only be utilized as an inhibitor of concrete carbide grain development yet additionally form the 3rd spread stage except WC and Carbon monoxide with each other with various other carbides, which can significantly improve the thermal firmness, thermal shock resistance, hot pushing resistance as well as oxidation resistance of concrete carbide. Niobium carbide can be made use of to prepare cemented carbide device materials with excellent reducing performance as a result of its advantages of boosting the firmness and enhancing the fracture sturdiness of the alloy.

The hard niobium carbide tough phase of the surfacing-covered electrode gets in the structure of the emerging layer, which gives the welding layer an excellent wear-resistant skeleton and considerably enhances the wear resistance. The wear resistance of this protected electrode emerging wear-resistant alloy is 1.2 ~ 1.8 times greater than that of quenched No. 45 steel (HRC50) and also 2.4 ~ 3.6 times greater than Fe-Cr-C-B wear-resistant alloy. At the very same time, the hard-facing layer can be welded externally of the workpiece without preheating, and also the tiny splits generated externally can launch the anxiety of the hard-facing layer. They will not spread right into the base product. D. Adding a percentage of niobium carbide to the steel reinforcing stage during steelmaking can attain the impacts of rainfall conditioning and fine grain conditioning, hence enhancing the comprehensive mechanical homes of steel.

Aerospace parts are made use of as preparation materials for lots of aerospace devices parts, such as turbine blades, gas rudders, blades, engine nozzle linings, as well as structural members of nuclear reactors.

Chemical residential properties of NbC powder

Niobium carbide is an eco-friendly cubic crystal with a metallic radiance belonging to a sodium chloride-type cubic crystal system. The family member density is 8.47, the latticework constant a= 0.447 nm, and the melting factor is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is harder than diamond. The flexible modulus is 338000N/mm2; the thermal expansion coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), as well as the created heat of 1 chemical publication is 40.7 kJ/mol. The details heat capability is 36.8 J/( mol? K), and the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in warm and cold hydrochloric acid, sulfuric acid, as well as nitric acid, soluble in a warm combined service of hydrofluoric acid as well as nitric acid. It is stable at 1000 ~ 1100 ℃ and also swiftly oxidizes to niobium pentoxide above 1100 ℃. Niobium carbide is simple to thaw in titanium, zirconium carbide, tungsten carbide, as well as other substances, forming an isomorphic solid service mix.

The rate of NbC powder

The market rate of NbC powder is influenced by numerous aspects. Currently, its market value remains in the process of vibrant change. If you need it, please contact us at any type of time.

NbC powder supplier

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