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What is the chemical stability of niobium carbide

What is NbC powder?

Niobium carbide is a green cubic crystal with a metallic gloss coming from a salt chloride-type cubic crystal system. Its melting factor is high, its firmness is high (microhardness is 235GPa, which is harder than diamond), and also its chemical stability is good (it is secure at one 000 ~ 1 100 ℃ as well as swiftly oxidizes to niobium pentoxide over one 100 ℃). Insoluble materials are cold and hot hydrochloric acid, sulfuric acid, as well as nitric acid, and they are only soluble in the warm mixed solution of hydrofluoric acid as well as nitric acid. Niobium carbide is easy to thaw in titanium carbide, zirconium carbide, tungsten carbide, and also other compounds, resulting in an isomorphic solid service, so it can be made use of to manufacture cermet, heat-resistant alloy, and also cemented carbide. The cemented carbide with niobium carbide has improved grain and improved all-around efficiency. The cutting tools constructed from it also have good thermal solidity, thermal shock resistance, and also thermal oxidation resistance.


What is NbC powder made use of for

? As one of the raw products of composite ceramic products, composite ceramic products made of composite ceramic products are frequently made use of in wear-resistant parts, reducing tools, electrodes, as well as other areas since of their high firmness, high melting point, exceptional chemical security, as well as electrical conductivity.

Sealed carbide can not only be utilized as a prevention of cemented carbide grain growth however likewise form the 3rd dispersed stage other than WC as well as Carbon monoxide along with various other carbides, which can substantially enhance the thermal hardness, thermal shock resistance, hot pushing resistance as well as oxidation resistance of concrete carbide. Niobium carbide can be used to prepare cemented carbide device products with superb reducing efficiency due to its advantages of raising the hardness as well as boosting the fracture durability of the alloy.

The hard niobium carbide hard phase of the surfacing-covered electrode goes into the framework of the appearing layer, which gives the welding layer an excellent wear-resistant skeletal system as well as greatly enhances the wear resistance. The wear resistance of this protected electrode emerging 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 same time, the hard-facing layer can be welded externally of the workpiece without pre-heating, and also the small cracks generated on the surface can launch the anxiety of the hard-facing layer. They will certainly not spread right into the base product. D. Adding a percentage of niobium carbide to the steel strengthening phase during steelmaking can attain the results of rainfall fortifying as well as great grain strengthening, thus improving the extensive mechanical properties of steel.

Aerospace parts are made use of as preparation materials for many aerospace devices components, such as wind turbine blades, gas rudders, blades, engine nozzle linings, as well as structural members of nuclear reactors.

Chemical properties of NbC powder

Niobium carbide is a green cubic crystal with a metal gloss belonging to a sodium chloride-type cubic crystal system. The family member thickness is 8.47, the lattice constant a= 0.447 nm, and the melting factor is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is more difficult than corundum. The flexible modulus is 338000N/mm2; the thermal expansion coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), as well as the produced heat of 1 chemical book is 40.7 kJ/mol. The particular heat ability is 36.8 J/( mol? K), as well as the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in warm and also cold hydrochloric acid, sulfuric acid, and also nitric acid, soluble in a hot mixed option of hydrofluoric acid as well as nitric acid. It is stable at 1000 ~ 1100 ℃ as well as swiftly oxidizes to niobium pentoxide above 1100 ℃. Niobium carbide is simple to melt in titanium, zirconium carbide, tungsten carbide, and also other substances, forming an isomorphic solid service combination.

The cost of NbC powder

The marketplace cost of NbC powder is impacted by various elements. Presently, its market value remains in the procedure of dynamic modification. If you need it, please contact us any time.

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