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 sodium chloride-type cubic crystal system. Its melting point is high, its solidity is high (microhardness is 235GPa, which is more difficult than corundum), and also its chemical security is excellent (it is steady at one 000 ~ 1 100 ℃ and rapidly oxidizes to niobium pentoxide over one 100 ℃). Insoluble materials are hot and cold hydrochloric acid, sulfuric acid, and also nitric acid, and they are just soluble in the warm combined service of hydrofluoric acid and also nitric acid. Niobium carbide is simple to thaw in titanium carbide, zirconium carbide, tungsten carbide, and also other compounds, resulting in an isomorphic strong remedy, so it can be utilized to produce cermet, heat-resistant alloy, and cemented carbide. The sealed carbide with niobium carbide has improved grain and boosted well-rounded efficiency. The cutting tools constructed from it additionally have great thermal firmness, thermal shock resistance, and also thermal oxidation resistance.

? As one of the raw materials of composite ceramic products, composite ceramic products constructed from composite ceramic materials are commonly utilized in wear-resistant parts, reducing tools, electrodes, and also various other areas as a result of their high solidity, high melting factor, superb chemical security, and also electric conductivity.

Sealed carbide can not only be used as a prevention of cemented carbide grain growth but likewise form the third distributed phase except WC and also Carbon monoxide together with various other carbides, which can dramatically improve the thermal solidity, thermal shock resistance, hot pushing resistance as well as oxidation resistance of cemented carbide. Niobium carbide can be utilized to prepare concrete carbide device materials with superb reducing performance as a result of its advantages of raising the hardness and also improving the crack toughness of the alloy.

The tough niobium carbide hard phase of the surfacing-covered electrode gets in the framework of the surfacing layer, which gives the welding layer a great wear-resistant skeleton as well as considerably enhances the wear resistance. The wear resistance of this protected electrode emerging wear-resistant alloy is 1.2 ~ 1.8 times more than that of quenched No. 45 steel (HRC50) and also 2.4 ~ 3.6 times more than Fe-Cr-C-B wear-resistant alloy. At the very same time, the hard-facing layer can be welded on the surface of the workpiece without pre-heating, and also the small cracks produced on the surface can launch the stress and anxiety of the hard-facing layer. They will not spread into the base material. D. Adding a percentage of niobium carbide to the steel reinforcing stage during steelmaking can attain the results of precipitation strengthening and also fine grain conditioning, therefore enhancing the extensive mechanical buildings of steel.

Aerospace components are used as prep work products for many aerospace devices parts, such as turbine blades, gas tails, blades, engine nozzle cellular linings, as well as architectural members of atomic power plants.

Chemical residential properties of NbC powder

Niobium carbide is an eco-friendly cubic crystal with a metallic luster coming from a salt chloride-type cubic crystal system. The family member density is 8.47, the latticework constant a= 0.447 nm, and also the melting factor is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is harder than corundum. The flexible modulus is 338000N/mm2; the thermal growth coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), as well as the produced heat of 1 chemical publication is 40.7 kJ/mol. The particular heat capability is 36.8 J/( mol? K), and also the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in hot and cold hydrochloric acid, sulfuric acid, as well as nitric acid, soluble in a warm blended service of hydrofluoric acid and also nitric acid. It is secure at 1000 ~ 1100 ℃ and also rapidly oxidizes to niobium pentoxide above 1100 ℃. Niobium carbide is simple to thaw in titanium, zirconium carbide, tungsten carbide, as well as various other compounds, creating an isomorphic strong option mix.

The cost of NbC powder

The marketplace cost of NbC powder is affected by different elements. Presently, its market price remains in the procedure of vibrant change. If you require it, please call us any time.

NbC powder supplier

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