What is the chemical stability of niobium carbide
What is NbC powder?
Niobium carbide is an environment-friendly cubic crystal with a metallic luster belonging to a sodium chloride-type cubic crystal system. Its melting factor is high, its hardness is high (microhardness is 235GPa, which is more difficult than diamond), as well as its chemical stability is excellent (it is steady at one 000 ~ 1 100 ℃ and quickly oxidizes to niobium pentoxide over one 100 ℃). Insoluble substances are hot and cold hydrochloric acid, sulfuric acid, and also nitric acid, and also they are only soluble in the hot combined option of hydrofluoric acid and nitric acid. Niobium carbide is very easy to thaw in titanium carbide, zirconium carbide, tungsten carbide, as well as other substances, resulting in an isomorphic solid solution, so it can be utilized to make cermet, heat-resistant alloy, and also sealed carbide. The sealed carbide with niobium carbide has actually fine-tuned grain and improved all-around performance. The cutting devices made from it also have great thermal hardness, thermal shock resistance, and also thermal oxidation resistance.
< img alt="" src= "https://i02piccdn.sogoucdn.com/af0360caa3637125" design= "width: 540px; height: 405px;"/ > What is NbC powder made use of for
? As one of the raw products of composite ceramic materials, composite ceramic products constructed from composite ceramic materials are usually utilized in wear-resistant parts, cutting devices, electrodes, and also various other fields as a result of their high hardness, high melting factor, exceptional chemical stability, and also electrical conductivity.
Sealed carbide can not only be used as an inhibitor of cemented carbide grain growth however also create the 3rd spread phase except WC and Carbon monoxide together with other carbides, which can dramatically enhance the thermal solidity, thermal shock resistance, hot pushing resistance and oxidation resistance of concrete carbide. Niobium carbide can be used to prepare cemented carbide device products with excellent reducing efficiency due to its benefits of enhancing the firmness as well as improving the fracture toughness of the alloy.
The hard niobium carbide hard stage of the surfacing-covered electrode goes into the framework of the appearing layer, which provides the welding layer a good wear-resistant skeleton as well as substantially enhances the wear resistance. The wear resistance of this covered electrode appearing 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 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 work surface without pre-heating, and the little fractures created externally can release the stress of the hard-facing layer. They will not spread right into the base product. D. Including a small amount of niobium carbide to the steel enhancing phase during steelmaking can accomplish the impacts of rainfall fortifying and also great grain fortifying, hence enhancing the detailed mechanical homes of steel.
Aerospace elements are utilized as prep work products for numerous aerospace devices components, such as generator blades, gas rudders, blades, engine nozzle linings, as well as architectural participants of nuclear reactors.
Chemical residential properties of NbC powder
Niobium carbide is an eco-friendly cubic crystal with a metallic luster belonging to a salt chloride-type cubic crystal system. The relative density is 8.47, the lattice constant a= 0.447 nm, as well as the melting point is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is more difficult than diamond. The flexible modulus is 338000N/mm2; the thermal growth 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 warmth capability is 36.8 J/( mol? K), and also the resistivity is 35 μ ω& mu; & omega;? centimeters 。 Insoluble in cold and hot hydrochloric acid, sulfuric acid, and nitric acid, soluble in a warm combined service of hydrofluoric acid as well as nitric acid. It is secure at 1000 ~ 1100 ℃ and swiftly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is easy to thaw in titanium, zirconium carbide, tungsten carbide, as well as various other compounds, developing an isomorphic solid remedy blend.
The cost of NbC powder
The market rate of NbC powder is influenced by various aspects. Currently, its market value is in the process of vibrant adjustment. If you require it, please call us any time.
NbC powder distributor
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