 |
 |
 |
||
 |
 |
|||
 |
||||
 |
|
|
|
|
|
|
|
|
||
|
|
|
|||
|
|
||||
|
|
|
|
|
|
Metal > NickelNi - Nickel Coins made from this transition metal were minted in 235 BC in China. In 1751 A. Cronstedt was able to purify the element. Our students explore the electrochemistry of the metal and may grow crystals from its salts Atomic number - 28 Density g/mL 8 .9 Atomic weight u 58 .7 Melting point K 1726 Bonding radius A 1 .15 Boiling point K 3187 Atomic radius A 1 .62 Heat of vaporization kJ/mol 370 .4 Ionization Potential V 7 .635 Heat of fusion kJ/mol 17 .47 Electronegativity - 1 .91 Specific heat J/gK 0 .44 The oxide is mildly basic. Crystal are face centered cubic. Electron config. : [Ar] 3d8 4s2 Definition: One of the most widely used alloying elements in steel. In amounts 0.50% to 5.00% its use in alloy steels increases the toughness and tensile strength without detrimental effect on the ductility. Nickel also increases the hardenability, thus permitting the steel to be oil- hardened instead of water quenched. In larger quantities, 8.00% and upwards, nickel is the constituent, together with chromium, of many corrosion resistant and stainless austenitic steels.
|
|
|
Metal Resources Directory an information portal on various metal industries in the world. Metal mining companies, metal processing companies, product manufacturing industries list of metal industries high temp metals at Metal Resource Link Partners Industry Metal | Cnc Machines | Metal Information | Site Map | Contact Us |