What is the chemical stability of niobium carbide
What is NbC powder?
Niobium carbide is an eco-friendly cubic crystal with a metal gloss coming from a salt chloride-type cubic crystal system. Its melting point is high, its hardness is high (microhardness is 235GPa, which is harder than corundum), as well as its chemical stability is good (it is secure at one 000 ~ 1 100 ℃ as well as swiftly oxidizes to niobium pentoxide above one 100 ℃). Insoluble materials are warm and cool hydrochloric acid, sulfuric acid, and nitric acid, and also they are only soluble in the warm mixed option of hydrofluoric acid and also nitric acid. Niobium carbide is easy to thaw in titanium carbide, zirconium carbide, tungsten carbide, and also various other substances, causing an isomorphic solid remedy, so it can be made use of to produce cermet, heat-resistant alloy, and also sealed carbide. The sealed carbide with niobium carbide has improved grain and boosted well-rounded performance. The cutting tools made from it likewise have great thermal firmness, thermal shock resistance, and also thermal oxidation resistance.
What is NbC powder used for
? As one of the raw materials of composite ceramic products, composite ceramic materials constructed from composite ceramic materials are frequently utilized in wear-resistant parts, reducing devices, electrodes, and also various other fields because of their high firmness, high melting point, superb chemical security, and electrical conductivity.
Cemented carbide can not only be used as a prevention of cemented carbide grain growth yet likewise develop the 3rd spread phase except WC and also Carbon monoxide along with other carbides, which can substantially improve the thermal firmness, thermal shock resistance, warm pressing resistance and oxidation resistance of cemented carbide. Niobium carbide can be used to prepare cemented carbide device products with exceptional reducing performance as a result of its advantages of boosting the hardness and also enhancing the crack durability of the alloy.
The hard niobium carbide hard stage of the surfacing-covered electrode enters the structure of the appearing layer, which provides the welding layer an excellent wear-resistant skeleton as well as substantially improves the wear resistance. The wear resistance of this covered electrode surfacing 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 more than Fe-Cr-C-B wear-resistant alloy. At the exact same time, the hard-facing layer can be welded externally of the workpiece without pre-heating, as well as the tiny cracks created on the surface area can launch the anxiety of the hard-facing layer. They will certainly not spread out into the base material. D. Including a percentage of niobium carbide to the steel strengthening stage throughout steelmaking can accomplish the impacts of rainfall strengthening and fine grain conditioning, hence enhancing the comprehensive mechanical homes of steel.
Aerospace parts are used as preparation materials for several aerospace equipment parts, such as turbine blades, gas rudders, blades, engine nozzle linings, and structural participants of nuclear activators.
Chemical residential or commercial properties of NbC powder
Niobium carbide is a green cubic crystal with a metal appeal belonging to a sodium chloride-type cubic crystal system. The family member density is 8.47, the latticework constant a= 0.447 nm, and also the melting point is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is harder 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), and the generated warm of 1 chemical book is 40.7 kJ/mol. The specific warmth capability is 36.8 J/( mol? K), and the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in cold and hot hydrochloric acid, sulfuric acid, as well as nitric acid, soluble in a warm mixed remedy of hydrofluoric acid and nitric acid. It is stable at 1000 ~ 1100 ℃ and quickly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is easy to thaw in titanium, zirconium carbide, tungsten carbide, and other substances, creating an isomorphic strong option mixture.
The rate of NbC powder
The market price of NbC powder is impacted by various factors. Currently, its market value remains in the procedure of vibrant adjustment. If you require it, please call us any time.
NbC powder vendor
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