What is the chemical stability of niobium carbide

What is NbC powder?

Niobium carbide is a green cubic crystal with a metallic radiance coming from a salt chloride-type cubic crystal system. Its melting point is high, its firmness is high (microhardness is 235GPa, which is harder than corundum), as well as its chemical stability is good (it is secure at one 000 ~ 1 100 ℃ and also swiftly oxidizes to niobium pentoxide above one 100 ℃). Insoluble compounds are cold and hot hydrochloric acid, sulfuric acid, as well as nitric acid, and also they are only soluble in the hot mixed remedy of hydrofluoric acid and nitric acid. Niobium carbide is easy to thaw in titanium carbide, zirconium carbide, tungsten carbide, and also various other substances, resulting in an isomorphic strong option, so it can be utilized to make cermet, heat-resistant alloy, as well as sealed carbide. The sealed carbide with niobium carbide has actually fine-tuned grain and boosted all-around performance. The cutting devices made from it also have excellent thermal firmness, thermal shock resistance, and thermal oxidation resistance.

? As one of the raw materials of composite ceramic products, composite ceramic products made from composite ceramic products are usually made use of in wear-resistant parts, cutting devices, electrodes, and various other fields due to the fact that of their high hardness, high melting factor, outstanding chemical stability, and electric conductivity.

Sealed carbide can not just be utilized as an inhibitor of concrete carbide grain development however likewise form the third dispersed stage other than WC and Carbon monoxide along with other carbides, which can significantly boost the thermal hardness, thermal shock resistance, hot pushing resistance as well as oxidation resistance of cemented carbide. Niobium carbide can be utilized to prepare concrete carbide tool products with outstanding cutting performance due to its benefits of boosting the firmness and also boosting the crack strength of the alloy.

The tough niobium carbide hard phase of the surfacing-covered electrode gets in the structure of the appearing layer, which provides the welding layer a good wear-resistant skeleton as well as significantly improves 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 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 externally of the workpiece without preheating, and also the small cracks created on the surface can launch the anxiety of the hard-facing layer. They will certainly not spread right into the base product. D. Including a small amount of niobium carbide to the steel reinforcing phase throughout steelmaking can accomplish the results of rainfall strengthening and also fine grain strengthening, therefore enhancing the extensive mechanical residential properties of steel.

Aerospace components are made use of as preparation materials for many aerospace devices components, such as turbine rotors, gas rudders, blades, engine nozzle linings, and architectural participants of nuclear activators.

Chemical residential or commercial properties of NbC powder

Niobium carbide is an environment-friendly cubic crystal with a metal radiance coming from a sodium chloride-type cubic crystal system. The family member density is 8.47, the lattice constant a= 0.447 nm, and also the melting factor is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is tougher 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 also the generated heat of 1 chemical book is 40.7 kJ/mol. The certain heat capacity is 36.8 J/( mol? K), and also the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in cold and hot hydrochloric acid, sulfuric acid, as well as nitric acid, soluble in a hot combined service of hydrofluoric acid and nitric acid. It is stable at 1000 ~ 1100 ℃ as well as swiftly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is easy to melt in titanium, zirconium carbide, tungsten carbide, as well as other compounds, developing an isomorphic strong solution mixture.

The cost of NbC powder

The market rate of NbC powder is affected by various variables. Presently, its market rate remains in the procedure of vibrant modification. If you require it, please contact us any time.

NbC powder vendor

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