What is the chemical stability of niobium carbide
What is NbC powder?
Niobium carbide is an environment-friendly cubic crystal with a metallic radiance coming from a sodium chloride-type cubic crystal system. Its melting point is high, its firmness is high (microhardness is 235GPa, which is more challenging than corundum), as well as its chemical security is excellent (it is secure at one 000 ~ 1 100 ℃ and also quickly oxidizes to niobium pentoxide above one 100 ℃). Insoluble compounds are cold and hot hydrochloric acid, sulfuric acid, and also nitric acid, as well as they are only soluble in the hot combined option of hydrofluoric acid as well as nitric acid. Niobium carbide is very easy to melt in titanium carbide, zirconium carbide, tungsten carbide, and also other substances, causing an isomorphic strong remedy, so it can be used to manufacture cermet, heat-resistant alloy, as well as sealed carbide. The sealed carbide with niobium carbide has actually improved grain as well as improved well-rounded performance. The cutting tools made of it likewise have great thermal hardness, thermal shock resistance, and also thermal oxidation resistance.
< img alt="" src= "https://i02piccdn.sogoucdn.com/af0360caa3637125" design= "size: 540px; elevation: 405px;"/ > What is NbC powder utilized for
? As one of the raw products of composite ceramic materials, composite ceramic products made from composite ceramic products are usually made use of in wear-resistant components, cutting tools, electrodes, as well as other fields due to their high firmness, high melting factor, superb chemical security, as well as electric conductivity.
Sealed carbide can not just be used as a prevention of cemented carbide grain development yet additionally create the third distributed stage other than WC as well as Co along with other carbides, which can dramatically improve the thermal solidity, thermal shock resistance, warm pressing resistance and oxidation resistance of cemented carbide. Niobium carbide can be utilized to prepare cemented carbide tool materials with excellent reducing efficiency due to its benefits of increasing the solidity and also boosting the crack durability of the alloy.
The tough niobium carbide difficult phase of the surfacing-covered electrode enters the framework of the appearing layer, which gives the welding layer a good wear-resistant skeleton and considerably enhances the wear resistance. The wear resistance of this covered electrode emerging wear-resistant alloy is 1.2 ~ 1.8 times more than that of quenched No. 45 steel (HRC50) and 2.4 ~ 3.6 times more than Fe-Cr-C-B wear-resistant alloy. At the very same time, the hard-facing layer can be bonded externally of the workpiece without pre-heating, and the little fractures generated on the surface can launch the tension of the hard-facing layer. They will not spread into the base product. D. Adding a percentage of niobium carbide to the steel reinforcing phase during steelmaking can achieve the results of rainfall conditioning and great grain fortifying, hence improving the detailed mechanical residential or commercial properties of steel.
Aerospace parts are utilized as preparation materials for lots of aerospace equipment components, such as turbine blades, gas rudders, blades, engine nozzle cellular linings, and structural participants of nuclear reactors.
Chemical residential properties of NbC powder
Niobium carbide is a green cubic crystal with a metallic luster belonging to a salt chloride-type cubic crystal system. The family member thickness 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 tougher 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 specific heat ability is 36.8 J/( mol? K), as well as the resistivity is 35 μ ω& mu; & omega;? centimeters 。 Insoluble in hot and cold hydrochloric acid, sulfuric acid, and also nitric acid, soluble in a hot combined option of hydrofluoric acid and also nitric acid. It is steady at 1000 ~ 1100 ℃ and quickly oxidizes to niobium pentoxide above 1100 ℃. Niobium carbide is simple to thaw in titanium, zirconium carbide, tungsten carbide, as well as other substances, creating an isomorphic solid option blend.
The cost of NbC powder
The market price of NbC powder is influenced by different elements. Presently, its market value remains in the procedure of dynamic change. If you require it, please call us at any moment.
NbC powder supplier
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