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 salt chloride-type cubic crystal system. Its melting point is high, its solidity is high (microhardness is 235GPa, which is more difficult than corundum), and its chemical stability is great (it is stable at one 000 ~ 1 100 ℃ as well as rapidly oxidizes to niobium pentoxide over one 100 ℃). Insoluble substances are hot as well as cold hydrochloric acid, sulfuric acid, and nitric acid, as well as they are just soluble in the warm blended service of hydrofluoric acid and also nitric acid. Niobium carbide is simple to melt in titanium carbide, zirconium carbide, tungsten carbide, as well as other compounds, causing an isomorphic strong service, so it can be made use of to manufacture cermet, heat-resistant alloy, as well as sealed carbide. The cemented carbide with niobium carbide has actually improved grain and enhanced all-around performance. The cutting tools made of it additionally have excellent thermal hardness, thermal shock resistance, and thermal oxidation resistance.
What is NbC powder utilized for
? As one of the raw products of composite ceramic materials, composite ceramic materials made of composite ceramic products are usually used in wear-resistant parts, cutting devices, electrodes, as well as other fields as a result of their high solidity, high melting point, superb chemical security, as well as electric conductivity.
Sealed carbide can not only be utilized as a prevention of cemented carbide grain development however additionally develop the third dispersed stage except WC and Co together with various other carbides, which can significantly improve the thermal solidity, thermal shock resistance, hot pressing resistance as well as oxidation resistance of concrete carbide. Niobium carbide can be used to prepare concrete carbide device materials with superb cutting efficiency as a result of its advantages of increasing the hardness as well as boosting the fracture sturdiness of the alloy.
The difficult niobium carbide difficult stage of the surfacing-covered electrode gets in the structure of the surfacing layer, which provides the welding layer a good wear-resistant skeletal system and also considerably improves the wear resistance. The wear resistance of this protected electrode emerging wear-resistant alloy is 1.2 ~ 1.8 times more than that of quenched No. 45 steel (HRC50) and also 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 bonded on the surface of the work surface without pre-heating, and the small fractures created externally can release the stress of the hard-facing layer. They will certainly not spread into the base material. D. Including a small amount of niobium carbide to the steel enhancing phase throughout steelmaking can attain the impacts of precipitation fortifying as well as great grain strengthening, thus enhancing the thorough mechanical properties of steel.
Aerospace parts are utilized as prep work materials for many aerospace devices parts, such as wind turbine blades, gas rudders, blades, engine nozzle linings, and architectural members of nuclear activators.
Chemical properties of NbC powder
Niobium carbide is a green cubic crystal with a metal luster coming from a sodium chloride-type cubic crystal system. The family member density is 8.47, the latticework constant a= 0.447 nm, and the melting point is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is tougher than diamond. The flexible modulus is 338000N/mm2; the thermal development coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), and also the produced warmth of 1 chemical publication is 40.7 kJ/mol. The specific heat ability 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 mixed service of hydrofluoric acid as well as nitric acid. It is stable at 1000 ~ 1100 ℃ as well as rapidly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is easy to thaw in titanium, zirconium carbide, tungsten carbide, as well as other substances, creating an isomorphic strong solution mixture.
The cost of NbC powder
The market cost of NbC powder is influenced by numerous factors. Currently, its market cost remains in the procedure of dynamic modification. If you require it, please call us at any moment.
NbC powder provider
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