By TRUNNANO | 09 May 2023 | 0 Comments
What are the characteristics of niobium carbide?
What are the characteristics of niobium carbide?
Niobium carbide is a green cubic crystal with a metallic luster, which belongs to the sodium chloride cubic crystal system. It has a high melting point, high hardness (microhardness 235GPa, harder than corundum), and good chemical stability (at 1 000 ~ 1 100 ℃ It is stable under low temperatures and rapidly oxidizes to niobium pentoxide above 1 100°C). The insoluble matter is hot and cold hydrochloric acid, sulfuric acid, and nitric acid, and is only soluble in the mixed solution of hot hydrofluoric acid and nitric acid. Niobium carbide is easy to melt in titanium carbide, zirconium carbide, tungsten carbide, and other compounds, forming a solid solution with isomorphism, so it can be used to manufacture cermets, heat-resistant alloys, and hard alloys. Adding niobium carbide to the cemented carbide, the grains have been refined, and the comprehensive performance has been significantly improved, and the cutting tools made of it also have good thermal hardness, thermal shock resistance, and thermal oxidation resistance.
Niobium carbide is a green cubic crystal with a metallic luster, which belongs to the sodium chloride cubic crystal system. It has a high melting point, high hardness (microhardness 235GPa, harder than corundum), and good chemical stability (at 1 000 ~ 1 100 ℃ It is stable under low temperatures and rapidly oxidizes to niobium pentoxide above 1 100°C). The insoluble matter is hot and cold hydrochloric acid, sulfuric acid, and nitric acid, and is only soluble in the mixed solution of hot hydrofluoric acid and nitric acid. Niobium carbide is easy to melt in titanium carbide, zirconium carbide, tungsten carbide, and other compounds, forming a solid solution with isomorphism, so it can be used to manufacture cermets, heat-resistant alloys, and hard alloys. Adding niobium carbide to the cemented carbide, the grains have been refined, and the comprehensive performance has been significantly improved, and the cutting tools made of it also have good thermal hardness, thermal shock resistance, and thermal oxidation resistance.
How is niobium carbide produced?
In industry, niobium carbide is usually prepared from niobium pentoxide and carbon black. In addition, niobium carbide can also be prepared directly from metal niobium and carbon black: mix metal niobium powder and carbon black in proportion, and mix them thoroughly. Heating to 1600-1700°C in a vacuum or hydrogen to make it carbonize directly can produce niobium carbide. The gas phase reaction method uses the mixed gas of niobium pentachloride vapor, hydrogen, and methane as raw materials to prepare niobium carbide. Pass the mixture of niobium pentachloride vapor and hydrogen through the tungsten wire heated by electricity with a temperature above 1000°C. At this time, a metal niobium layer is formed on the surface of the tungsten wire and then continues to energize to raise the temperature to 1300°C. The mixed gas of methane and hydrogen is introduced to carburize niobium into niobium carbide and deposit on the surface of hot tungsten wire, which is the product.
What is the function of niobium carbide and what fields are they used in?
Niobium carbide has good chemical stability and high-temperature performance. It is a high melting point and high hardness material, which is widely used in refractory high-temperature materials and cemented carbide additives.
Niobium carbide is a solid solution component of ternary and quaternary carbides. It is used in combination with tungsten carbide and molybdenum carbide for hot forging dies, cutting tools, jet engine turbine blades, valves, tail skirts, and rocket nozzle coatings.
Niobium carbide is used as a carbide cemented carbide additive, which is a ternary and quaternary carbide solid solution component, such as WC-NbC-C ternary system, etc. It can also be used as a purple artificial gemstone.
Niobium carbide is used in the production of wear-resistant films and semiconductor films. It can also be used as a raw material for the production of molybdenum carbide and can be used for the manufacture of chromium-free special alloys and engineering ceramics.
Niobium carbide cemented carbide can not only act as an inhibitor of cemented carbide grain growth but also form a third dispersed phase with other carbides other than WC and Co, which can significantly improve the hot hardness and thermal shock resistance of cemented carbide Resistance, heat resistance, pressure resistance, oxidation resistance. Because niobium carbide has the advantages of increasing the hardness of the alloy and improving the fracture toughness of the alloy, it can be used to prepare cemented carbide tool materials with excellent cutting performance.
High-quality niobium carbide supplier
TRUNNANO (aka Luoyang Tongrun Nano Technology Co., Ltd.) is a trusted global chemical material supplier and manufacturer with over 12 years of experience in providing ultra-high quality chemicals and nanomaterials. At present, our company has successfully developed a series of powder materials. Provide OEM service. If you are looking for niobium carbide, please contact us. Or click the desired product to send us an inquiry.
In industry, niobium carbide is usually prepared from niobium pentoxide and carbon black. In addition, niobium carbide can also be prepared directly from metal niobium and carbon black: mix metal niobium powder and carbon black in proportion, and mix them thoroughly. Heating to 1600-1700°C in a vacuum or hydrogen to make it carbonize directly can produce niobium carbide. The gas phase reaction method uses the mixed gas of niobium pentachloride vapor, hydrogen, and methane as raw materials to prepare niobium carbide. Pass the mixture of niobium pentachloride vapor and hydrogen through the tungsten wire heated by electricity with a temperature above 1000°C. At this time, a metal niobium layer is formed on the surface of the tungsten wire and then continues to energize to raise the temperature to 1300°C. The mixed gas of methane and hydrogen is introduced to carburize niobium into niobium carbide and deposit on the surface of hot tungsten wire, which is the product.
What is the function of niobium carbide and what fields are they used in?
Niobium carbide has good chemical stability and high-temperature performance. It is a high melting point and high hardness material, which is widely used in refractory high-temperature materials and cemented carbide additives.
Niobium carbide is a solid solution component of ternary and quaternary carbides. It is used in combination with tungsten carbide and molybdenum carbide for hot forging dies, cutting tools, jet engine turbine blades, valves, tail skirts, and rocket nozzle coatings.
Niobium carbide is used as a carbide cemented carbide additive, which is a ternary and quaternary carbide solid solution component, such as WC-NbC-C ternary system, etc. It can also be used as a purple artificial gemstone.
Niobium carbide is used in the production of wear-resistant films and semiconductor films. It can also be used as a raw material for the production of molybdenum carbide and can be used for the manufacture of chromium-free special alloys and engineering ceramics.
Niobium carbide cemented carbide can not only act as an inhibitor of cemented carbide grain growth but also form a third dispersed phase with other carbides other than WC and Co, which can significantly improve the hot hardness and thermal shock resistance of cemented carbide Resistance, heat resistance, pressure resistance, oxidation resistance. Because niobium carbide has the advantages of increasing the hardness of the alloy and improving the fracture toughness of the alloy, it can be used to prepare cemented carbide tool materials with excellent cutting performance.
High-quality niobium carbide supplier
TRUNNANO (aka Luoyang Tongrun Nano Technology Co., Ltd.) is a trusted global chemical material supplier and manufacturer with over 12 years of experience in providing ultra-high quality chemicals and nanomaterials. At present, our company has successfully developed a series of powder materials. Provide OEM service. If you are looking for niobium carbide, please contact us. Or click the desired product to send us an inquiry.
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