Overview of Niobium Boride NbB2 powder:
The chemical formula of niobium boride is NbB2 and the molecular weight is 114.528. It is a gray-black powder, niobium boride (NbB2) has a high melting point, high hardness, good electrical conductivity and thermal conductivity, corrosion resistance of the molten metal, superconductivity, and other characteristics, which can be used to produce ultra-high temperature structural materials and superconductivity Materials have important applications in extreme environments such as ultra-high temperature and metal smelting. Niobium diboride (NbB2) is a highly covalent refractory ceramic material with a hexagonal crystal structure.
NbB2 can be synthesized by a stoichiometric reaction between the constituent elements (in this case, Nb and B). This reaction allows precise stoichiometric control of the material. Nb2O5 (or NbO2) can also be reduced to niobium diboride by metal thermal reduction. Use cheap precursor materials and react according to the following reactions:
Nb2O5 + 2 B2O3 + 11 Mg→2 NbB2 + 11 MgO
Mg is used as a reactant to perform acid leaching of undesirable oxide products. During the thermal reduction of metals, a stoichiometric excess of Mg and B2O3 is usually required in order to consume all available niobium oxide.
Jha and his colleagues proposed that NbO2 and element boron are reduced by solid-state reaction to obtain nanorods (40×800 nm2).
Produce nanocrystals (61 nm). Successfully synthesized NbB2 through the Zoli reaction
The nanocrystals were reduced by NabH4 and Nb2O5 at a molar ratio of 1:4 under argon flow at 700°C with a molar ratio of M: B.
Nb2O5 + 13/2 NaBH 4→2 NbB2 + 4NA (G, L) + 5/2 NaBO2 + 13 H 2 (g)
The application of niobium boride NbB2 powder:
What is the application range of niobium boride NbB2 powder?
NbB2 is an ultra-high temperature ceramic (UHTC) with a melting point of 3050°C. Its relatively low density (approximately 6.97 g/cm3) and good high-temperature strength make it a candidate for high-temperature aerospace applications (such as hypersonic flight) or rocket propulsion systems. Ceramic has high thermal conductivity and electrical conductivity (resistivity of 25.7ΩYbcm, Cte of 7.7 Yb10 -6°C-1), and has the same
Titanium diboride, zirconium diboride, ha diboride and tantalum diboride with the same structure of NboB2 have the same performance. The parts are usually hot pressed or spark plasma sintered (applying mechanical pressure to the heated powder), and then processed into shapes. The covalent nature of NbB2 and the presence of surface oxides hinder the sintering of NbB2, which then makes the particles coarser and then densify during the sintering process. By using sintering additives such as boron carbide and carbon, NbB2 can be sintered without pressure. These sintering additives react with surface oxides to increase the sintering force, but the mechanical properties of NbB2 decrease compared with hot press sintering.
The price of niobium boride NbB2 powder:
The price of niobium boride NbB2 powder varies randomly with production costs, transportation costs, international conditions, exchange rates, and market supply and demand for niobium boride NbB2 powder. Tanki New Materials Co.,Ltd aims to help all industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for Niobium Boride NbB2 powder, please feel free to contact us for the latest price of niobium boride NbB2 powder.
Supplier of Niobium Boride NbB2 powder：
As a global supplier of niobium boride NbB2 powder, Tanki New Materials Co.,Ltd has extensive experience in advanced, engineered material properties, applications, and cost-effective manufacturing. The company has successfully developed a series of boride powder materials (including niobium boride NbB2 powder, molybdenum boride, tungsten boride, etc.), high-purity targets, functional ceramics, and structural devices, and provides OEM services.