What is the chemical stability of niobium carbide

What is NbC powder?

Niobium carbide is a green cubic crystal with a metallic gloss belonging to a sodium chloride-type cubic crystal system. Its melting point is high, its hardness is high (microhardness is 235GPa, which is more challenging than diamond), and also its chemical security is great (it is stable at one 000 ~ 1 100 ℃ as well as swiftly oxidizes to niobium pentoxide over one 100 ℃). Insoluble materials are cold and hot hydrochloric acid, sulfuric acid, and nitric acid, as well as they are just soluble in the warm blended remedy of hydrofluoric acid and also nitric acid. Niobium carbide is simple to thaw in titanium carbide, zirconium carbide, tungsten carbide, and other compounds, causing an isomorphic strong option, so it can be made use of to manufacture cermet, heat-resistant alloy, and also sealed carbide. The cemented carbide with niobium carbide has improved grain and enhanced all-around performance. The cutting tools constructed from it additionally have excellent thermal firmness, thermal shock resistance, and thermal oxidation resistance.

? As one of the raw materials of composite ceramic products, composite ceramic products constructed from composite ceramic materials are typically utilized in wear-resistant components, reducing tools, electrodes, as well as other fields due to their high solidity, high melting factor, outstanding chemical security, and also electric conductivity.

Cemented carbide can not only be made use of as a prevention of cemented carbide grain growth but also develop the third dispersed phase other than WC and Carbon monoxide together with other carbides, which can dramatically boost the thermal solidity, thermal shock resistance, warm pressing resistance as well as oxidation resistance of cemented carbide. Niobium carbide can be made use of to prepare concrete carbide tool materials with excellent cutting performance due to its advantages of raising the solidity and enhancing the fracture strength of the alloy.

The hard niobium carbide hard stage of the surfacing-covered electrode goes into the framework of the emerging layer, which gives the welding layer a good wear-resistant skeleton and also greatly boosts the wear resistance. The wear resistance of this protected electrode appearing wear-resistant alloy is 1.2 ~ 1.8 times greater than that of quenched No. 45 steel (HRC50) and 2.4 ~ 3.6 times greater 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 preheating, and also the small cracks generated externally can launch the tension of the hard-facing layer. They will not spread out into the base product. D. Adding a tiny amount of niobium carbide to the steel reinforcing stage during steelmaking can achieve the effects of rainfall fortifying as well as fine grain conditioning, thus improving the detailed mechanical residential or commercial properties of steel.

Aerospace components are utilized as prep work materials for numerous aerospace tools parts, such as turbine rotors, gas rudders, blades, engine nozzle cellular linings, and also architectural participants of nuclear activators.

Chemical homes of NbC powder

Niobium carbide is a green cubic crystal with a metal appeal coming from a sodium chloride-type cubic crystal system. The family member density is 8.47, the lattice constant a= 0.447 nm, and also the melting point is 2300 ℃. The microhardness is > 235GPA (> 2400kg/mm2), which is tougher than corundum. The elastic modulus is 338000N/mm2; the thermal expansion coefficient is 6.65×& times; 10-6/ K, the thermal conductivity is 14w/( m? K), and the created warmth of 1 chemical book is 40.7 kJ/mol. The certain heat capacity is 36.8 J/( mol? K), and 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 blended service of hydrofluoric acid and nitric acid. It is steady at 1000 ~ 1100 ℃ and also swiftly oxidizes to niobium pentoxide above 1100 ℃. Niobium carbide is easy to melt in titanium, zirconium carbide, tungsten carbide, and also other compounds, creating an isomorphic strong solution combination.

The rate of NbC powder

The market cost of NbC powder is influenced by numerous aspects. Currently, its market value remains in the process of vibrant modification. If you need it, please contact us at any moment.

NbC powder provider

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