What is the chemical stability of niobium carbide

What is NbC powder?

Niobium carbide is a green cubic crystal with a metallic luster coming from a salt chloride-type cubic crystal system. Its melting factor is high, its solidity is high (microhardness is 235GPa, which is more difficult than corundum), as well as its chemical stability is good (it is steady at one 000 ~ 1 100 ℃ and also rapidly oxidizes to niobium pentoxide over one 100 ℃). Insoluble materials are cold and hot hydrochloric acid, sulfuric acid, and also nitric acid, and also they are only soluble in the hot mixed solution of hydrofluoric acid and nitric acid. Niobium carbide is simple to melt in titanium carbide, zirconium carbide, tungsten carbide, as well as various other compounds, resulting in an isomorphic solid solution, so it can be made use of to make cermet, heat-resistant alloy, and cemented carbide. The cemented carbide with niobium carbide has fine-tuned grain and improved well-rounded efficiency. The cutting tools constructed from it additionally have great thermal solidity, thermal shock resistance, and also thermal oxidation resistance.

? As one of the raw materials of composite ceramic products, composite ceramic products made from composite ceramic products are commonly utilized in wear-resistant components, cutting tools, electrodes, and other areas as a result of their high firmness, high melting point, outstanding chemical security, and also electrical conductivity.

Sealed carbide can not just be used as an inhibitor of cemented carbide grain development however likewise form the third distributed phase other than WC and Co along with other carbides, which can significantly improve the thermal solidity, thermal shock resistance, hot pushing resistance and also oxidation resistance of concrete carbide. Niobium carbide can be utilized to prepare concrete carbide tool products with superb cutting efficiency as a result of its advantages of boosting the solidity as well as boosting the crack durability of the alloy.

The hard niobium carbide difficult stage of the surfacing-covered electrode gets in the framework of the emerging layer, which provides the welding layer an excellent wear-resistant skeleton and also considerably boosts the wear resistance. The wear resistance of this protected electrode surfacing 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 more than Fe-Cr-C-B wear-resistant alloy. At the very same time, the hard-facing layer can be bonded on the surface of the work surface without preheating, and also the little cracks created externally can release the stress of the hard-facing layer. They will certainly not spread right into the base material. D. Adding a percentage of niobium carbide to the steel reinforcing phase during steelmaking can accomplish the impacts of precipitation fortifying and also great grain strengthening, hence improving the comprehensive mechanical residential or commercial properties of steel.

Aerospace parts are made use of as preparation products for lots of aerospace devices parts, such as wind turbine rotors, gas tails, blades, engine nozzle cellular linings, and architectural members of nuclear activators.

Chemical buildings of NbC powder

Niobium carbide is an eco-friendly cubic crystal with a metallic appeal belonging to a salt chloride-type cubic crystal system. The relative density is 8.47, the latticework constant a= 0.447 nm, as well as the melting point is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is harder than corundum. The elastic modulus is 338000N/mm2; the thermal development coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), and the generated warmth of 1 chemical book is 40.7 kJ/mol. The certain warm capacity is 36.8 J/( mol? K), and also the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in warm and chilly hydrochloric acid, sulfuric acid, and also nitric acid, soluble in a hot mixed remedy of hydrofluoric acid and also nitric acid. It is secure at 1000 ~ 1100 ℃ and quickly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is easy to melt in titanium, zirconium carbide, tungsten carbide, as well as various other substances, developing an isomorphic strong solution mixture.

The rate of NbC powder

The marketplace rate of NbC powder is affected by different elements. Presently, its market rate remains in the procedure of dynamic adjustment. If you require it, please contact us any time.

NbC powder supplier

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