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Platinum ( Pt )

Material Information

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Foil Insulated Wire Lump Mesh Microfoil Powder Rod Single Crystal Sputtering Target
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General Description:  

Platinum was known to native South Americans before the arrival of Columbus and was introduced into Europe around 1750.

Platinum is a member of the platinum group metals and is lustrous, malleable and ductile; it has an abundance of approximately 0.001 ppm in the earth's crust. Of the group of six metals (Pt, Pd, Os, Ir, Rh and Ru), it is the most important. It is unaffected by oxygen and water and is only soluble in aqua regia or fused alkalis.

Applications for platinum are many and varied; for example, it is used to make weights and measures standards, it is used in the electronics industry for electrical contacts which might be subject to high temperatures, and it is used to manufacture electrodes which might be subject to chemical attack. A current and important use of platinum is in car exhaust catalysts, in which a ceramic honeycomb is coated with platinum. Platinum is also used to manufacture jewelry and, along with gold and silver, has its own hallmark.

   

Atomic Properties

Atomic number 78
Atomic radius - Goldschmidt ( nm ) 0.138
Atomic weight ( amu ) 195.08
Crystal structure Face centred cubic
Electronic structure Xe 4f14 5d9 6s1
Ionization potential No. eV
1 9.0
2 18.6
Natural isotope distribution Mass No. %
190 0.01
192 0.79
194 32.90
195 33.80
196 25.30
198 7.20
Photo-electric work function ( eV ) 5.3
Thermal neutron absorption cross-section ( Barns ) 9.0
Valences shown 1, 2, 3, 4

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 10.58
Temperature coefficient @0-100C ( K-1 ) 0.00392

Mechanical Properties

Material condition Soft Hard Polycrystalline
Bulk modulus ( GPa )     276
Hardness - Vickers 40 100
Poisson's ratio     0.39
Tensile modulus ( GPa )     170
Tensile strength ( MPa ) 125-150 200-300
Yield strength ( MPa ) 14-35 185

Physical Properties

Boiling point ( C ) 3827
Density @20C ( g cm-3 ) 21.45
Melting point ( C ) 1772

Thermal Properties

Coefficient of thermal expansion @0-100C ( x10-6 K-1 ) 9.0
Latent heat of evaporation ( J g-1 ) 2405
Latent heat of fusion ( J g-1 ) 101
Specific heat @25C ( J K-1 kg-1 ) 133
Thermal conductivity @0-100C ( W m-1 K-1 ) 71.6

Buy Platinum on-line

We stock and supply the following standard forms:
Foil Insulated Wire Lump Mesh Microfoil Powder Rod Single Crystal Sputtering Target
Foil Insulated Wire Lump Mesh Microfoil Powder Rod Single Crystal Sputtering Target
Tube Wire
Tube Wire

Choose a form to search our on-line catalog  

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