Physical and chemical properties of niobium carbide

Niobium carbide is a metal carbide with the chemical formula NbC.

Physical and chemical properties of niobium carbide

Niobium carbide is a green cubic crystal with metallic luster and belongs to the sodium chloride type cubic crystal system.

The relative density is 8.47, the lattice constant a=0.447nm,

Melting point is 3500°C. The microhardness is >23.5 Gpa (>2400 kg/mm2), which is harder than corundum. Elastic modulus 338000 N/mm2, thermal expansion coefficient 6.65×10^(-6)/K, thermal conductivity 14 w/(m·K), heat generation -140.7 kJ/mol, specific heat capacity 36.8 J/(mol·K) , Resistivity 35μΩ·cm.

It is insoluble in hot and cold hydrochloric acid, sulfuric acid and nitric acid, but soluble in a mixed solution of hot hydrofluoric acid and nitric acid. It is stable at 1000~1100℃, and rapidly oxidized to niobium pentoxide above 1100℃. Niobium carbide is easy to melt in titanium carbide, zirconium carbide, tungsten carbide and other compounds, and together form isomorphous solid solution mixtures. Melting point: 3500℃, density: 7.6g/cm³(25℃)

Overview of niobium carbide NBC powder

Niobium carbide (NBC and Nb2C) is a very hard refractory ceramic material used commercially for cutting tool tips. It is usually processed by sintering and is a commonly used additive in cemented carbides as a grain growth inhibitor. The appearance is brown-gray metal powder with purple luster and strong corrosion resistance.

Niobium carbide can be produced by heating niobium oxide to 1800°C in a vacuum and adding coke.

Niobium carbide NBC powder is a dark gray-brown powder with cubic crystal structure and metallic luster. It is stable at 1000～1100℃, and rapidly oxidizes to niobium pentoxide above 1100℃.

Niobium carbide NBC powder has good chemical stability and high temperature performance. It is a material with a high melting point and high hardness.

Niobium carbide NBC powder is insoluble in hot and cold hydrochloric acid, sulfuric acid and nitric acid, but soluble in a mixed solution of hot hydrofluoric acid and nitric acid.

Niobium carbide NBC powder is easily soluble in titanium carbide, zirconium carbide, tungsten carbide and other compounds, forming a uniform solid solution mixture together, and is a commonly used cemented carbide additive.

Application of niobium carbide NBC powder

Niobium carbide NBC powder can partially replace tantalum carbide and is widely used in refractory high-temperature materials and cemented carbide additives

As an additive for carbide cemented carbide, niobium carbide is a solid solution component of ternary and quaternary carbides, such as the WC-NBC-C ternary system.

Niobium carbide NBC powder can also be used to make purple artificial gems.

Niobium carbide NBC powder price

The price of niobium carbide powder NBC will produce niobium carbide powder NBC with random changes in cost, transportation cost, international situation, exchange rate and market demand for niobium carbide powder NBC. Tanki New Materials Co., Ltd. aims to help various 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 carbide NBC powder, please feel free to send an inquiry to get the latest price of niobium carbide NBC powder.

Niobium carbide NBC powder suppliers

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