What is the chemical stability of niobium carbide
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What is NbC powder?
Niobium carbide is a green cubic crystal with a metal radiance coming from a sodium chloride-type cubic crystal system. Its melting factor is high, its hardness is high (microhardness is 235GPa, which is harder than diamond), as well as its chemical security is great (it is stable at one 000 ~ 1 100 ℃ and quickly oxidizes to niobium pentoxide above one 100 ℃). Insoluble substances are hot and cold hydrochloric acid, sulfuric acid, and also nitric acid, and they are only soluble in the hot mixed option of hydrofluoric acid as well as nitric acid. Niobium carbide is very easy to melt in titanium carbide, zirconium carbide, tungsten carbide, and various other compounds, causing an isomorphic strong solution, so it can be used to produce cermet, heat-resistant alloy, and sealed carbide. The cemented carbide with niobium carbide has actually improved grain and also improved well-rounded performance. The cutting tools made of it likewise have good thermal hardness, thermal shock resistance, and thermal oxidation resistance.
< img alt="" src= "https://i02piccdn.sogoucdn.com/af0360caa3637125" style= "size: 540px; elevation: 405px;"/ > What is NbC powder utilized for
? As one of the raw materials of composite ceramic materials, composite ceramic materials made from composite ceramic products are often utilized in wear-resistant components, reducing devices, electrodes, as well as other areas due to their high firmness, high melting point, superb chemical security, and also electrical conductivity.
Sealed carbide can not just be utilized as a prevention of concrete carbide grain growth however additionally develop the third dispersed phase other than WC and also Co together with various other carbides, which can considerably boost the thermal hardness, thermal shock resistance, hot pushing resistance and oxidation resistance of concrete carbide. Niobium carbide can be used to prepare concrete carbide device products with exceptional cutting performance due to its advantages of increasing the firmness and also improving the fracture sturdiness of the alloy.
The hard niobium carbide hard phase of the surfacing-covered electrode enters the framework of the surfacing layer, which offers the welding layer a great wear-resistant skeleton and also significantly boosts the wear resistance. The wear resistance of this covered electrode emerging wear-resistant alloy is 1.2 ~ 1.8 times greater than that of quenched No. 45 steel (HRC50) as well as 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 on the surface of the workpiece without preheating, and the little splits generated externally can release the tension of the hard-facing layer. They will certainly not spread out into the base product. D. Including a small amount of niobium carbide to the steel reinforcing phase during steelmaking can achieve the effects of precipitation fortifying as well as fine grain strengthening, thus enhancing the detailed mechanical homes of steel.
Aerospace parts are used as preparation materials for several aerospace devices components, such as turbine blades, gas tails, blades, engine nozzle cellular linings, and structural participants of atomic power plants.
Chemical properties of NbC powder
Niobium carbide is an environment-friendly cubic crystal with a metal luster coming from a sodium chloride-type cubic crystal system. The loved one density is 8.47, the lattice constant a= 0.447 nm, as well as the melting factor 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), and also the produced warm of 1 chemical book is 40.7 kJ/mol. The details warm capability is 36.8 J/( mol? K), and also the resistivity is 35 μ ω& mu; & omega;? cm 。 Insoluble in hot and cold hydrochloric acid, sulfuric acid, as well as nitric acid, soluble in a warm blended solution of hydrofluoric acid as well as nitric acid. It is steady at 1000 ~ 1100 ℃ and rapidly oxidizes to niobium pentoxide above 1100 ℃. Niobium carbide is simple to thaw in titanium, zirconium carbide, tungsten carbide, and various other compounds, developing an isomorphic strong option mixture.
The cost of NbC powder
The marketplace price of NbC powder is affected by numerous factors. Presently, its market price remains in the procedure of vibrant adjustment. If you need it, please contact us at any time.
NbC powder provider
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