Vanadium carbide

Extremely hard refractory ceramic material

Vanadium carbide[1] Vanadium carbide

Names
Other names

Vanadium Carbon
Vanadium(IV) carbide

Identifiers

CAS Number

* 12070-10-9 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 27472996

ECHA InfoCard | 100.031.917
EC Number |

* 235-122-5

PubChem CID

* 159387

CompTox Dashboard (EPA)

* DTXSID80893139

InChI

* InChI=1S/C.V/q-1;+1

Key: ZLANVVMKMCTKMT-UHFFFAOYSA-N

SMILES

* [V+]#[C-]

Properties

Chemical formula

| VC
Molar mass | 62.953 g·mol−1
Appearance  | refractory black cubic crystals
Density | 5.77 g/cm3
Melting point | 2,810 °C (5,090 °F; 3,080 K)

Solubility in water

| insoluble
Structure

Crystal structure

| cubic, cF8

Space group

| Fm3m, No. 225
Related compounds

Related compounds

* Niobium carbide
* Tantalum carbide

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Y verify (what is YN ?)

Infobox references

Chemical compound

Vanadium carbide is the inorganic compound with the formula VC. It is an extremely hard and refractory ceramic material. With a hardness of 9-9.5 Mohs, it is possibly the hardest metal-carbide known.[2] It is of interest because it is prevalent in vanadium metal and alloys.[3]

## Structure and preparation

[edit]

Being isomorphous with vanadium monoxide, it crystallizes in the rock salt structure. Because VC and VO are miscible, samples of VC typically contain an impurity of the oxide.[3] It is produced by heating vanadium oxides with carbon at around 1000 °C. Vanadium carbide can be formed in the (111) orientation, when formed by radio frequency magnetron sputtering. Although VC is thermodynamically stable, it converts to V2C at higher temperatures.

Vanadium carbide is used as an additive to cemented carbide, to refine the carbide crystals and thereby get an increased hardness of the inserts.

## Physical properties

[edit]

Vanadium carbide has an elastic modulus of approximately 380 GPa.[4]

## References

[edit]

1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–93, ISBN 0-8493-0594-2
2. ^ "Ceramic and Cermet Composite Powders - PPM Ltd". Archived from the original on 11 September 2016. Retrieved 13 September 2016.
3. ^ a b Günter Bauer, Volker Güther, Hans Hess, Andreas Otto, Oskar Roidl, Heinz Roller, Siegfried Sattelberger "Vanadium and Vanadium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim. doi:10.1002/14356007.a27_367
4. ^ Hannink, R.; Murry, M. (1974). "Elastic moduli measurements of some cubic transition metal carbides and alloyed carbides". Journal of Materials Science. 9 (2): 223–228\. Bibcode:1974JMatS...9..223H. doi:10.1007/BF00550945. S2CID 135599970.

* v
* t
* e

Vanadium compounds

Vanadium(0)|

* V(CO)6

Vanadium(II)|

* VF2
* VBr2
* VCl2
* VI2
* VO
* VS
* VSO4

Vanadium(III)|

* VBr3
* VCl3
* VF3
* VI3
* VN
* V2O3
* V2(SO4)3
* VPO4
* V2S3

| Organovanadium(III) compounds|

* V(C9H11)3

|

Vanadium(IV)|

* VC
* VO2
* VS2
* V(S2)2
* VCl4
* VF4

| Organovanadium(IV) compounds|

* VO(C5H7O2)2

|

Vanadyl(IV) compounds|

* VOCl2
* VOSO4
* VO(CH3COO)2

Oxovanadates(IV)|

* Lu2V2O7

Vanadium(V)|

* V2O5
* VO2F
* VF5
* VCl5
* VCl3NCl
* VO+

| Vanadyl(V) compounds|

* VOPO4
* VO(ClO4)3
* VOCl3
* VOF3
* VO(NO3)3

|

Oxovanadates(V)|

* BiVO4
* NH4VO3
* NaVO3
* Na3VO4
* Na6V10O28
* NdVO3
* YVO3

*[CID]: Compound ID
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