What is the chemical stability of niobium carbide

What is NbC powder?

Niobium carbide is an eco-friendly cubic crystal with a metallic appeal coming from a salt chloride-type cubic crystal system. Its melting point is high, its hardness is high (microhardness is 235GPa, which is harder than corundum), and its chemical stability is great (it is stable at one 000 ~ 1 100 ℃ and rapidly oxidizes to niobium pentoxide above one 100 ℃). Insoluble compounds are hot and cold hydrochloric acid, sulfuric acid, as well as nitric acid, as well as they are only soluble in the hot mixed service of hydrofluoric acid and nitric acid. Niobium carbide is very easy to thaw in titanium carbide, zirconium carbide, tungsten carbide, as well as other compounds, causing an isomorphic solid service, so it can be made use of to produce cermet, heat-resistant alloy, as well as cemented carbide. The cemented carbide with niobium carbide has fine-tuned grain and also improved all-around efficiency. The cutting devices made from it likewise have excellent thermal solidity, thermal shock resistance, as well as 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, reducing devices, electrodes, and other fields due to their high hardness, high melting factor, superb chemical security, as well as electric conductivity.

Sealed carbide can not just be made use of as a prevention of cemented carbide grain growth but also create the 3rd distributed stage other than WC and also Co along with other carbides, which can considerably improve the thermal firmness, thermal shock resistance, hot pushing resistance as well as oxidation resistance of concrete carbide. Niobium carbide can be used to prepare concrete carbide tool products with excellent cutting performance because of its benefits of enhancing the hardness and enhancing the crack toughness of the alloy.

The difficult niobium carbide tough phase of the surfacing-covered electrode gets in the structure of the appearing layer, which offers the welding layer an excellent wear-resistant skeleton as well as greatly 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) as well as 2.4 ~ 3.6 times higher than Fe-Cr-C-B wear-resistant alloy. At the same time, the hard-facing layer can be welded on the surface of the workpiece without pre-heating, and also the small fractures produced on the surface can release the anxiety of the hard-facing layer. They will not spread out right into the base product. D. Including a percentage of niobium carbide to the steel enhancing stage throughout steelmaking can accomplish the results of rainfall fortifying and also fine grain conditioning, thus improving the extensive mechanical homes of steel.

Aerospace components are used as prep work materials for numerous aerospace equipment parts, such as turbine rotors, gas tails, blades, engine nozzle cellular linings, and also structural participants of atomic power plants.

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 thickness is 8.47, the latticework constant a= 0.447 nm, as well as the melting factor is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is harder than corundum. The flexible modulus is 338000N/mm2; the thermal development coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), as well as the produced warm of 1 chemical publication is 40.7 kJ/mol. The specific warm capability is 36.8 J/( mol? K), as well as the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in cold and hot hydrochloric acid, sulfuric acid, and nitric acid, soluble in a hot combined solution of hydrofluoric acid as well as nitric acid. It is steady at 1000 ~ 1100 ℃ as well as quickly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is easy to thaw in titanium, zirconium carbide, tungsten carbide, as well as other substances, developing an isomorphic solid option blend.

The rate of NbC powder

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NbC powder distributor

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