What is the chemical stability of niobium carbide
What is NbC powder?
Niobium carbide is an eco-friendly cubic crystal with a metallic appeal belonging to a sodium chloride-type cubic crystal system. Its melting factor is high, its firmness is high (microhardness is 235GPa, which is tougher than corundum), and its chemical security is great (it is steady at one 000 ~ 1 100 ℃ as well as quickly oxidizes to niobium pentoxide above one 100 ℃). Insoluble materials are hot and chilly hydrochloric acid, sulfuric acid, and nitric acid, as well as they are only soluble in the warm mixed solution of hydrofluoric acid and nitric acid. Niobium carbide is simple to melt in titanium carbide, zirconium carbide, tungsten carbide, as well as other substances, causing an isomorphic strong service, so it can be utilized to produce cermet, heat-resistant alloy, as well as sealed carbide. The sealed carbide with niobium carbide has refined grain as well as enhanced well-rounded efficiency. The cutting devices constructed from it likewise have good thermal hardness, thermal shock resistance, as well as thermal oxidation resistance.
What is NbC powder used for
? As one of the raw products of composite ceramic products, composite ceramic products made of composite ceramic products are commonly utilized in wear-resistant components, reducing tools, electrodes, as well as various other areas since of their high hardness, high melting factor, superb chemical security, and electric conductivity.
Sealed carbide can not only be utilized as an inhibitor of concrete carbide grain development however likewise form the 3rd dispersed stage except WC and Co along with various other carbides, which can dramatically improve the thermal solidity, thermal shock resistance, hot pressing resistance and oxidation resistance of concrete carbide. Niobium carbide can be utilized to prepare cemented carbide device products with superb reducing efficiency as a result of its advantages of boosting the hardness and also enhancing the fracture strength of the alloy.
The difficult niobium carbide difficult stage of the surfacing-covered electrode gets in the framework of the surfacing layer, which provides the welding layer a great wear-resistant skeletal system and also considerably boosts the wear resistance. The wear resistance of this covered electrode appearing wear-resistant alloy is 1.2 ~ 1.8 times greater 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 same time, the hard-facing layer can be bonded externally of the work surface without pre-heating, and also the tiny cracks produced externally can release the anxiety of the hard-facing layer. They will certainly not spread out right into the base material. D. Adding a percentage of niobium carbide to the steel strengthening stage during steelmaking can achieve the impacts of rainfall conditioning and also fine grain strengthening, hence improving the extensive mechanical residential or commercial properties of steel.
Aerospace elements are utilized as preparation products for numerous aerospace equipment components, such as turbine blades, gas rudders, blades, engine nozzle linings, and structural participants of atomic power plants.
Chemical properties of NbC powder
Niobium carbide is an environment-friendly cubic crystal with a metallic gloss coming from a sodium chloride-type cubic crystal system. The loved one thickness is 8.47, the latticework constant a= 0.447 nm, as well as 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 book is 40.7 kJ/mol. The certain warm capability is 36.8 J/( mol? K), as well as the resistivity is 35 μ ω& mu; & omega;? centimeters 。 Insoluble in cold and hot hydrochloric acid, sulfuric acid, as well as nitric acid, soluble in a warm mixed remedy of hydrofluoric acid and also nitric acid. It is stable at 1000 ~ 1100 ℃ and also swiftly oxidizes to niobium pentoxide over 1100 ℃. Niobium carbide is very easy to melt in titanium, zirconium carbide, tungsten carbide, as well as various other substances, forming an isomorphic solid service combination.
The rate of NbC powder
The market cost of NbC powder is affected by various variables. Presently, its market price is in the process of vibrant modification. If you need it, please contact us at any moment.
NbC powder supplier
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