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What is the chemical stability of niobium carbide

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What is NbC powder?

Niobium carbide is a green cubic crystal with a metal radiance coming from a salt chloride-type cubic crystal system. Its melting factor is high, its solidity is high (microhardness is 235GPa, which is more challenging than corundum), and also its chemical stability is excellent (it is steady at one 000 ~ 1 100 ℃ and also rapidly oxidizes to niobium pentoxide above one 100 ℃). Insoluble substances are warm and chilly hydrochloric acid, sulfuric acid, and nitric acid, and they are only soluble in the hot blended solution of hydrofluoric acid and nitric acid. Niobium carbide is very easy to melt in titanium carbide, zirconium carbide, tungsten carbide, and various other substances, causing an isomorphic solid solution, so it can be used to make cermet, heat-resistant alloy, as well as sealed carbide. The sealed carbide with niobium carbide has improved grain as well as enhanced well-rounded efficiency. The cutting tools constructed from it additionally have great thermal solidity, thermal shock resistance, as well as thermal oxidation resistance.


What is NbC powder used for

? As one of the raw products of composite ceramic products, composite ceramic materials made from composite ceramic materials are often used in wear-resistant parts, reducing tools, electrodes, and also other fields since of their high solidity, high melting factor, exceptional chemical security, and also electrical conductivity.

Sealed carbide can not only be utilized as a prevention of concrete carbide grain development however also create the 3rd spread phase other than WC and also Carbon monoxide together with other carbides, which can dramatically improve the thermal hardness, thermal shock resistance, hot pushing resistance and oxidation resistance of cemented carbide. Niobium carbide can be made use of to prepare cemented carbide device materials with excellent cutting efficiency since of its advantages of increasing the solidity and improving the fracture strength of the alloy.

The tough niobium carbide hard phase of the surfacing-covered electrode gets in the structure of the surfacing layer, which provides the welding layer a great wear-resistant skeleton and significantly enhances the wear resistance. The wear resistance of this protected electrode emerging wear-resistant alloy is 1.2 ~ 1.8 times higher than that of quenched No. 45 steel (HRC50) as well as 2.4 ~ 3.6 times greater than Fe-Cr-C-B wear-resistant alloy. At the exact same time, the hard-facing layer can be bonded externally of the workpiece without preheating, as well as the little cracks generated externally can launch the stress of the hard-facing layer. They will certainly not spread into the base material. D. Adding a little quantity of niobium carbide to the steel reinforcing phase during steelmaking can attain the results of rainfall conditioning and fine grain conditioning, thus enhancing the thorough mechanical residential properties of steel.

Aerospace parts are used as prep work products for numerous aerospace equipment parts, such as generator rotors, gas tails, blades, engine nozzle cellular linings, and also structural members of nuclear activators.

Chemical homes of NbC powder

Niobium carbide is a green cubic crystal with a metallic radiance belonging to a sodium chloride-type cubic crystal system. The relative density is 8.47, the latticework constant a= 0.447 nm, and the melting point is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is harder than corundum. The elastic modulus is 338000N/mm2; the thermal growth coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), and also the created heat of 1 chemical publication is 40.7 kJ/mol. The details warm ability is 36.8 J/( mol? K), and also the resistivity is 35 μ ω& mu; & omega;? centimeters 。 Insoluble in cold and hot hydrochloric acid, sulfuric acid, and nitric acid, soluble in a hot blended remedy of hydrofluoric acid as well as nitric acid. It is stable at 1000 ~ 1100 ℃ as well as rapidly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is very easy to thaw in titanium, zirconium carbide, tungsten carbide, and other substances, forming an isomorphic strong service mix.

The price of NbC powder

The market cost of NbC powder is affected by different variables. Currently, its market cost remains in the process of dynamic adjustment. If you require it, please contact us at any moment.

NbC powder provider

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