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Cerium ( Ce )

Material Information

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Foil Lump Powder Rod Sputtering Target Wire
Foil Lump Powder Rod Sputtering Target Wire

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General Description:  

Cerium was discovered in 1803 by J.J. Berzelius and W. Hisinger at Vestmanland, Sweden. However, it was first isolated by W.F. Hillebrand and T.H. Norton in 1875 in Washington DC, USA.

Cerium is a reactive grey metal and is one of the most abundant of the lanthanide group of metals, having an abundance of 68 ppm within the Earth's crust. It oxidises in air, ignites when heated and reacts rapidly in water and, hence, it must be stored in an air free enviroment. Cerium can be used as an alloying element with iron and other constituents to produce a flint material used in automatic ignition devices, and the addition of cerium to some metal alloys greatly improves their heat resistance. Cerium can also be used in vacuum apparatus as a "getter" for noble gases.

   

Atomic Properties

Atomic number 58
Atomic radius - Goldschmidt ( nm ) 0.182
Atomic weight ( amu ) 140.12
Crystal structure Face centred cubic
Electronic structure Xe 4f2 6s2
Ionisation potential No. eV
1 5.47
2 10.85
3 20.20
4 36.72
Natural isotope distribution Mass No. %
136 0.2
138 0.3
140 88.4
142 11.1
Photo-electric work function ( eV ) 2.9
Thermal neutron absorption cross-section ( Barns ) 0.73
Valences shown 3, 4

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 85.4
Temperature coefficient @0-100C ( K-1 ) 0.0087
Thermal emf against Pt (cold 0C - hot 100C) ( mV ) +1.14

Mechanical Properties

Material condition Cast Polycrystalline
Bulk modulus ( GPa )   24.4
Hardness - Vickers 25-30
Poisson's ratio   0.248
Tensile modulus ( GPa )   33.5
Tensile strength ( MPa ) 102
Yield strength ( MPa ) 91

Physical Properties

Boiling point ( C ) 3426
Density @20C ( g cm-3 ) 6.75
Melting point ( C ) 799

Thermal Properties

Coefficient of thermal expansion @0-100C ( x10-6 K-1 ) 8.0
Latent heat of evaporation ( J g-1 ) 2680
Latent heat of fusion ( J g-1 ) 37.3
Specific heat @25C ( J K-1 kg-1 ) 205
Thermal conductivity @0-100C ( W m-1 K-1 ) 11.3

Buy Cerium on-line

We stock and supply the following standard forms:
Foil Lump Powder Rod Sputtering Target Wire
Foil Lump Powder Rod Sputtering Target Wire

Choose a form to search our on-line catalogue  

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