What is the chemical stability of niobium carbide
What is NbC powder?
Niobium carbide is a green cubic crystal with a metal radiance belonging to a sodium chloride-type cubic crystal system. Its melting factor is high, its hardness is high (microhardness is 235GPa, which is tougher than diamond), and its chemical stability is excellent (it is secure at one 000 ~ 1 100 ℃ as well as rapidly oxidizes to niobium pentoxide above one 100 ℃). Insoluble materials are hot and also chilly hydrochloric acid, sulfuric acid, and also nitric acid, and also they are only soluble in the hot combined solution of hydrofluoric acid and also nitric acid. Niobium carbide is simple to melt in titanium carbide, zirconium carbide, tungsten carbide, and also other substances, leading to an isomorphic solid remedy, so it can be used to make cermet, heat-resistant alloy, and also sealed carbide. The cemented carbide with niobium carbide has improved grain as well as enhanced well-rounded efficiency. The cutting devices constructed from it likewise have excellent 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 typically utilized in wear-resistant components, reducing devices, electrodes, as well as other areas due to their high hardness, high melting point, exceptional chemical security, as well as electrical conductivity.
Sealed carbide can not only be made use of as a prevention of cemented carbide grain growth but also form the third spread phase except WC and Carbon monoxide together with various other carbides, which can significantly boost the thermal solidity, thermal shock resistance, warm pressing resistance and oxidation resistance of cemented carbide. Niobium carbide can be used to prepare concrete carbide device products with exceptional reducing performance due to the fact that of its benefits of increasing the hardness and boosting the fracture durability of the alloy.
The hard niobium carbide hard phase of the surfacing-covered electrode gets in the structure of the appearing layer, which gives the welding layer a great wear-resistant skeleton as well as significantly improves 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 welded on the surface of the workpiece without pre-heating, as well as the small fractures generated externally can launch the tension of the hard-facing layer. They will not spread right into the base product. D. Including a little amount of niobium carbide to the steel reinforcing stage throughout steelmaking can attain the impacts of precipitation conditioning as well as great grain conditioning, thus boosting the detailed mechanical homes of steel.
Aerospace components are made use of as prep work materials for lots of aerospace devices parts, such as wind turbine blades, gas rudders, blades, engine nozzle cellular linings, and also architectural participants of nuclear activators.
Chemical buildings of NbC powder
Niobium carbide is an environment-friendly cubic crystal with a metallic radiance belonging to a salt chloride-type cubic crystal system. The loved one 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 challenging than diamond. The elastic 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 created warmth of 1 chemical book is 40.7 kJ/mol. The details warm ability is 36.8 J/( mol? K), as well as the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in warm and cool hydrochloric acid, sulfuric acid, and also nitric acid, soluble in a hot blended remedy of hydrofluoric acid as well as nitric acid. It is secure at 1000 ~ 1100 ℃ and also quickly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is easy to melt in titanium, zirconium carbide, tungsten carbide, and also various other substances, forming an isomorphic solid solution combination.
The cost of NbC powder
The marketplace rate of NbC powder is affected by different elements. Currently, its market price remains in the procedure of vibrant adjustment. If you need it, please contact us at any moment.
NbC powder provider
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