|
|
V - Vanadium A transition metal discovered in 1801 by Andreas del Rio in Mexico. The major use of the element is in hardened steels.
Atomic number - 23 Density g/mL 5 .8
Atomic weight u 50 .9415 Melting point K 2175
Bonding radius A 1 .22 Boiling point K 3682
Atomic radius A 1 .92 Heat of vaporization kJ/mol 447 .02
Ionization Potential V 6 .74 Heat of fusion kJ/mol 20 .9
Electronegativity - 1 .63 Specific heat J/gK 0 .49
The oxide is amphoteric.
Crystal are body centered cubic.
Electron config. : [Ar] 3d3 4s2
Definition: Steels containing vanadium have a much finer grain structure than steels of similar composition without vanadium. It raises the temperature at which grain coarsening sets in and increases hardenability where it is in solution in the austenite prior to quenching. It also lessens softening on tempering and confers secondary hardness on high speed steels. Vanadium is used in nitriding, heat resisting, tool and spring steels in conjunction with other alloying elements.
|
| 1.
Vanadium |
(Scandinavian goddess, Vanadis) Vanadium was first discovered by del Rio in 1801. ... Vanadium of 99.3 to 99.8% purity was not produced until 1922. ...
|
28-Dec-2005 Hits: 235 Rating: 0.00 Votes: 0
[Detail]
[Send URL]
|
|
|
|
