Vanadium carbide Property

Melting point:

2810°C

Boiling point:

3900℃ [KIR83]

Density 

5.77 g/mL at 25 °C(lit.)

solubility 

insoluble in H2O

form 

powder

Specific Gravity

5.77

color 

Black

Resistivity

65.0–98.0 (ρ/μΩ.cm)

Water Solubility 

Insoluble in water.

Crystal Structure

Cubic, NaCl Structure

Exposure limits

NIOSH: TWA 1 mg/m3; STEL 3 mg/m3; Ceiling 0.05 mg/m3

EPA Substance Registry System

Vanadium carbide (VC) (12070-10-9)

Safety

Hazard Codes 

Xn

Risk Statements 

20/21/22

Safety Statements 

36

RIDADR 

UN3178

WGK Germany 

3

TSCA 

Yes

HazardClass 

4.1

PackingGroup 

III

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H228Flammable solid

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

Vanadium carbide Chemical Properties,Usage,Production

Structure

Dark, very hard, chemically resistant submetallic substances. The V-C system has two phases:
VC: Homogeneity region VC_0.92-VC_0.74; m.p. 2800°C. Crystal structure: B 1 (NaCl) type.
V2C: Homogeneity region VC_0.4-VC_0.5. Crystal structure: L 3 type

Chemical Properties

Crystal. Mohs hardness 2800 kg/sq mm, resistivity 150 μΩ?cm (room temperature).

Physical properties

Black crystals soluble in HNO₃with decomposition. Wear resistant film, cutting tools. Resistant to oxidation in air up to 300°C.

Uses

Alloys for cutting tools, steel additive.

Uses

Vanadium carbide (VC) and niobium carbide (NbC) are also extremely hard refractory materials. VC can be used as an additive to tungsten carbide (WC) to refine the carbide crystals and to improve the property of the cermet. TiC, ZrC, VC and NbC are commercially used in tool bits for cutting tools.

Uses

Vanadium carbide (VC) is used to alloy iron to produce high-speed, high-temperature cutting tools for cutting metals and other hard substances.

Production Methods

V + C = VC
The reactants, preferably in finely subdivided form, are intimately mixed and, if needed, also compressed into pellets. The reaction is then carried out in a high vacuum. At a temperature of 1300°C, approximately 24 hours, or at 2000 ℃ about 15 minutes, are required for homogenization of the product. The reaction is best carried out in a graphite crucible.

Flammability and Explosibility

Non flammable