What is the chemical stability of niobium carbide

What is NbC powder?

Niobium carbide is an environment-friendly cubic crystal with a metallic radiance coming from a sodium chloride-type cubic crystal system. Its melting factor is high, its hardness is high (microhardness is 235GPa, which is more challenging than diamond), and also its chemical security is excellent (it is secure at one 000 ~ 1 100 ℃ and also quickly oxidizes to niobium pentoxide over one 100 ℃). Insoluble substances are cold and hot hydrochloric acid, sulfuric acid, and nitric acid, as well as they are just soluble in the hot combined remedy of hydrofluoric acid and nitric acid. Niobium carbide is easy to melt in titanium carbide, zirconium carbide, tungsten carbide, and various other substances, leading to an isomorphic strong option, so it can be made use of to make cermet, heat-resistant alloy, and sealed carbide. The cemented carbide with niobium carbide has actually refined grain and improved all-around performance. The cutting tools made from it likewise have excellent thermal firmness, thermal shock resistance, as well as thermal oxidation resistance.

? As one of the raw materials of composite ceramic products, composite ceramic materials made from composite ceramic materials are frequently used in wear-resistant components, reducing devices, electrodes, and other fields as a result of their high hardness, high melting factor, exceptional chemical security, as well as electric conductivity.

Sealed carbide can not only be made use of as a prevention of concrete carbide grain development yet likewise create the third distributed phase other than WC and also Carbon monoxide along with other carbides, which can considerably improve the thermal hardness, thermal shock resistance, warm pressing resistance and also oxidation resistance of cemented carbide. Niobium carbide can be made use of to prepare concrete carbide tool materials with superb reducing efficiency due to its benefits of increasing the hardness and improving the crack durability of the alloy.

The difficult niobium carbide hard stage of the surfacing-covered electrode gets in the structure of the emerging layer, which provides the welding layer an excellent wear-resistant skeletal system as well as significantly boosts the wear resistance. The wear resistance of this protected electrode surfacing 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 very same time, the hard-facing layer can be welded on the surface of the workpiece without pre-heating, as well as the small cracks produced externally can launch the stress of the hard-facing layer. They will certainly not spread out right into the base product. D. Including a percentage of niobium carbide to the steel strengthening stage during steelmaking can accomplish the results of rainfall strengthening and fine grain conditioning, therefore improving the comprehensive mechanical homes of steel.

Aerospace elements are used as prep work products for many aerospace devices components, such as turbine blades, gas tails, blades, engine nozzle linings, as well as structural participants of atomic power plants.

Chemical homes of NbC powder

Niobium carbide is an environment-friendly cubic crystal with a metallic radiance coming from a salt chloride-type cubic crystal system. The family member thickness is 8.47, the lattice constant a= 0.447 nm, and the melting point is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is harder than diamond. 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 warmth of 1 chemical book is 40.7 kJ/mol. The certain heat capacity is 36.8 J/( mol? K), as well as the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in hot and cold hydrochloric acid, sulfuric acid, and nitric acid, soluble in a warm blended solution of hydrofluoric acid and nitric acid. It is secure at 1000 ~ 1100 ℃ and also swiftly oxidizes to niobium pentoxide above 1100 ℃. Niobium carbide is very easy to melt in titanium, zirconium carbide, tungsten carbide, and also various other substances, developing an isomorphic strong remedy combination.

The price of NbC powder

The market rate of NbC powder is affected by different elements. Currently, its market value is in the process of vibrant change. If you require it, please call us any time.

NbC powder supplier

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