Product Name: Vanadium Nitride (VN) 
Specification: 0.8-10um (D50) 
Appearance: Irregular 
Color: Black 
Features: high hardness, high melting point, high conductivity, wear resistance, low coefficient of thermal expansion, high thermal conductivity, good thermal and chemical stability 
Usage: In the fields of batteries, catalysts, photocatalysis, optoelectronics, advanced materials, etc

Appearance: Black cubic crystalline powder 
Density (g/mL, 25/4 ℃): 6.13 
Melting point (º C): 2360 
Electrical resistivity (μ Ω· cm): 85 
Thermal conductivity (W/(m · K)): 11.3 
Coefficient of body expansion (K-1): 8.1 × 10-6 
Microhardness (kg/mm2): 1310 
Structure Introduction 
Vanadium nitride has two crystal structures: one is V3N, a hexagonal crystal structure with extremely high hardness, a microhardness of about 1900HV, and an unmeasurable melting point; The second is VN, with a density of 6.13 and a relative molecular weight of 64.95 [2] The face centered cubic crystal structure has a microhardness of approximately 1520HV and a melting point of 2360 degrees. They all have high wear resistance. 
Vanadium nitride, also known as vanadium nitrogen alloy, is a new type of alloy additive that can replace vanadium iron in the production of microalloyed steel. 
Adding vanadium nitride to steel can improve its comprehensive mechanical properties such as strength, toughness, ductility, and thermal fatigue resistance, and make the steel have good weldability. At the same strength, adding vanadium nitride saves 30-40% of vanadium addition, thereby reducing costs. Vanadium nitrogen alloy can be used in structural steel, tool steel, pipeline steel, steel bars, and cast iron. The application of vanadium nitrogen alloy in high-strength low-alloy steel can simultaneously achieve effective vanadium and nitrogen microalloying, promote the precipitation of carbon, vanadium, and nitrogen compounds in the steel, and more effectively exert the effects of settlement strengthening and grain refinement. Vanadium nitrogen alloys have more effective strengthening and grain refinement effects than vanadium iron. Using vanadium nitrogen alloys can save vanadium addition, and under the same strength conditions, vanadium nitrogen alloys can save 20-40% vanadium compared to vanadium iron. Using vanadium nitrogen alloys can stabilize vanadium and nitrogen yields and reduce steel performance fluctuations. The use of vanadium nitrogen alloy is very convenient and has low losses. Adopting high-strength moisture-proof packaging, it can be directly put into the furnace. Vanadium nitride is a better steelmaking additive than high vanadium iron. Using vanadium nitride as an additive, the nitrogen component in vanadium nitride can promote the precipitation of vanadium after hot processing, making the precipitate particles smaller and thus improving the weldability and formability of steel. Used as a raw material for hard alloys, producing wear-resistant and semiconductor thin films. It is a new and efficient vanadium alloy additive that can be used to produce high-strength low-alloy steel products such as high-strength welded steel bars, non quenched and tempered steel, high-speed tool steel, and high-strength pipeline steel. Compared with vanadium iron, vanadium nitrogen alloy can more effectively strengthen and refine grain size, saving 30% to 50% of vanadium compared to using vanadium iron. It plays a significant role in improving steel strength and reducing steelmaking costs. Used as a raw material for hard alloys, producing wear-resistant and semiconductor thin films. 
Synthesis method: 
1. Mix stoichiometric carbon and vanadium pentoxide thoroughly, and carry out a reduction nitriding reaction at 1250 ℃ in a chlorine gas atmosphere to obtain vanadium nitride. It can also be prepared by reacting a nitrogen hydrogen mixture with vanadium tetrachloride at 1400-1600 ℃; Or it can be prepared by reacting ammonia gas (NH3) with ammonium metavanadate (NH4VO3) at 1000-1100 ℃. 
2. Adopt the reduction method. Vanadium nitride can be prepared by thoroughly mixing stoichiometric carbon and vanadium pentoxide, and conducting a reduction nitriding reaction at 1250 ℃ in a nitrogen atmosphere. It can also be prepared by reacting a nitrogen hydrogen mixture with vanadium tetrachloride at 1400-1600 ℃; Or it can be prepared by reacting ammonia gas (NH3) with ammonium metavanadate (NH4VO3) at 1000-1100 ℃.