Nickel, Ni

Nickel is a metallic chemical element with the symbol Ni and atomic number 28.

Nickel is a silvery white metal that takes on a high polish. It belongs to the transition metals, and is hard and ductile. It occurs most usually in combination with sulfur and iron in pentlandite, with sulfur in millerite, with arsenic in the mineral nickeline, and with arsenic and sulfur in nickel glance.

Similar to the massive forms of chromium, aluminium and titanium, nickel is a very reactive element, but is slow to react in air at normal temperatures and pressures. Due to its permanence in air and its inertness to oxidation, it is used in coins, for plating iron, brass, etc., for chemical apparatus, and in certain alloys, such as German silver.

Nickel is magnetic, and is very frequently accompanied by cobalt, both being found in meteoric iron. It is chiefly valuable for the alloys it forms, especially many superalloys, and particularly stainless steel. Nickel is also a naturally magnetostrictive material, meaning that in the presence of a magnetic field, the material undergoes a small change in length. In the case of Nickel, this change in length is negative (contraction of the material), which is known as negative magnetostriction.

Technical Data
Symbol Ni Density (20°C)/gcm-3 8.908
Atomic number 28 Melting point / °C 1455
No. of naturally occurring isotopes 5 Boiling point / °C 2920
Atomic weight 58.69 ΔHfus/kJmol-1 17.2(+/-0.3)
Electronic configuration [Ar]3d842 ΔHvap/kJmol-1 375(+/-17)
Metal radius! 12-coordinate)/pm 124 ΔHf(monoatomic gas)/kJmol-1 429(+/-13)
Effective ionic radius(6-coord)/pm IV 48 Electrical resistivity (20°C)/μohm cm 6.84
Effective ionic radius(6-coord)/pm III 56(ls),60(hs) Electronegativity χ 1.8
Effective ionic radius(6-coord)/pm II 69    
Evaporation Techniques
Temperature (oC) @Vap. Pressure Techniques Remarks
10-8 Torr 10-6 Torr 10-4 Torr Electron Beam Crucible Coil Boat
927 1072 1262 Excellent Al2O3 & Vitreous Graphite Tungsten Tungsten Alloys with refractory metals. Forms smooth adherent films. Very corrosive when melts, alumina coated boats or baskets provide a good solution.

Evaporation Materials
N2-5000-M Ingot (Please ask for sizes)
N2-5001-M pellets 6mm diameter x 3mm long
N2-5002-M pellets 6mm diameter x 6mm long
N2-5013-M pieces 2-4mm
N2-5012-M pellets 3mm diameter x 3mm long
N2-5015-M pellets 3mm diameter x 6mm long

The foils are available in either rectangular or circular shape. Please enter width and length or diameter of the required foil.

Foil
N2-3003-F 0.004" (0.1mm)
N2-3007-F 0.008" (0.2mm)
Powder
N2-10000-P -100 mesh
N2-10004-P -325 mesh
N2-10005-P 5 microns average
Rods
N2-2000-R 0.0625" (1.58mm)
N2-2001-R 0.125" (3.175mm)
N2-2002-R 0.250" (6.35mm)
N2-2003-R 0.500" (12.7mm)
N2-2004-R 0.625" (15.88mm)
N2-2005-R 0.750" (19.05mm)
N2-2006-R 1" (25.4mm)
Sheet
N2-4002-S 0.020" (0.5mm)
N2-4003-S 0.030" (0.76mm)
N2-4004-S 0.040" (1mm)
N2-4008-S 0.125" (3.175mm)
N2-4009-S 0.250" (6.35mm)
N2-4010-S 0.375" (9.525mm)
N2-4011-S 0.500" (12.7mm)
N2-4012-S 0.750" (19.05mm)
N2-4013-S 1" (25.4mm)
Wire
N2-1000-W 0.001" (0.025mm)
N2-1001-W 0.002" (0.05mm)
N2-1003-W 0.004" (0.1mm)
N2-1005-W 0.006" (0.152mm)
N2-1007-W 0.008" (0.203mm)
N2-1011-W 0.020" (0.5mm)
N2-1013-W 0.040" (1.0mm)
N2-1017-W 0.080" (2.0mm)