What is the chemical stability of niobium carbide

What is NbC powder?

Niobium carbide is a green cubic crystal with a metallic appeal belonging to a salt chloride-type cubic crystal system. Its melting point is high, its hardness is high (microhardness is 235GPa, which is more difficult than diamond), and its chemical security is great (it is secure at one 000 ~ 1 100 ℃ and rapidly oxidizes to niobium pentoxide over one 100 ℃). Insoluble materials are cold and hot hydrochloric acid, sulfuric acid, and nitric acid, and they are just 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 other compounds, leading to an isomorphic strong service, so it can be used to produce cermet, heat-resistant alloy, and sealed carbide. The cemented carbide with niobium carbide has actually refined grain and enhanced well-rounded performance. The cutting tools constructed from it also have excellent thermal firmness, thermal shock resistance, as well as thermal oxidation resistance.

? As one of the raw products of composite ceramic materials, composite ceramic products constructed from composite ceramic materials are often used in wear-resistant components, cutting tools, electrodes, and other areas due to their high firmness, high melting point, outstanding chemical stability, and also electric conductivity.

Cemented carbide can not just be used as a prevention of cemented carbide grain development yet additionally develop the third dispersed phase other than WC and also Carbon monoxide with each other with various other carbides, which can considerably boost the thermal solidity, thermal shock resistance, warm pressing resistance and also oxidation resistance of cemented carbide. Niobium carbide can be made use of to prepare cemented carbide device materials with outstanding reducing performance due to the fact that of its advantages of raising the hardness and also improving the fracture durability of the alloy.

The tough niobium carbide tough stage of the surfacing-covered electrode goes into the framework of the appearing layer, which offers the welding layer a good wear-resistant skeleton and also considerably 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 higher than Fe-Cr-C-B wear-resistant alloy. At the very same time, the hard-facing layer can be welded externally of the workpiece without pre-heating, as well as the small cracks generated on the surface area can launch the stress of the hard-facing layer. They will certainly not spread right into the base material. D. Adding a small quantity of niobium carbide to the steel reinforcing stage throughout steelmaking can attain the effects of precipitation strengthening and great grain strengthening, thus improving the detailed mechanical residential properties of steel.

Aerospace parts are used as prep work materials for many aerospace tools components, such as wind turbine blades, gas rudders, blades, engine nozzle linings, as well as architectural members of atomic power plants.

Chemical homes of NbC powder

Niobium carbide is an eco-friendly cubic crystal with a metal appeal belonging to a sodium chloride-type cubic crystal system. The relative thickness 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 flexible modulus is 338000N/mm2; the thermal expansion coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), and the generated warm of 1 chemical book is 40.7 kJ/mol. The details heat capability is 36.8 J/( mol? K), and the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in warm as well as cool hydrochloric acid, sulfuric acid, as well as nitric acid, soluble in a hot combined remedy of hydrofluoric acid as well as nitric acid. It is stable at 1000 ~ 1100 ℃ and also quickly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is easy to thaw in titanium, zirconium carbide, tungsten carbide, and other substances, forming an isomorphic strong remedy mixture.

The price of NbC powder

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NbC powder vendor

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