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Cerium Foil (Light Tight)

Available Configurations

Properties common to all products in this list

Commodity: Metals Material: Cerium Form: Foil (Light Tight) Composition: Ce CAS Number: 7440-45-1 Purity: 99.9% Temper: As Rolled Coating: Uncoated Opacity: Light Tight Surface Finish: Standard
Cerium Foil (Light Tight) is a precision-engineered rare-earth metal form designed to eliminate light transmission, providing both mechanical integrity and complete optical shielding. Its high ductility allows it to be fabricated into extremely uniform, pinhole-free sheets, while its chemical stability and resistance to oxidation at ambient temperatures ensure long-term performance in demanding environments. This material is used in industries including aerospace, nuclear research, advanced optics, and high-vacuum technology. Specific technologies that benefit from light-tight cerium foil include optical sensor housing for stray-light elimination, shielding layers in photonic instrumentation, and controlled-environment enclosures for sensitive experiments. Its dual role as a functional barrier and a reactive metal component makes it valuable for research into advanced catalytic systems, surface chemistry, and alloy development. By combining unique rare-earth reactivity with complete light-blocking capability, cerium foil (light tight) occupies a strategic position in both scientific innovation and high-reliability industrial applications.

Flammable

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Material Properties

Atomic Properties
Element Value
Atomic number 58
Crystal structure Face centred cubic
Electronic structure Xe 4f² 6s²
Valences shown 3, 4
Atomic weight( amu ) 140.12
Thermal neutron absorption cross-section( Barns ) 0.73
Photo-electric work function( eV ) 2.9
Natural isotope distribution( Mass No./% ) 136/ 0.2
Natural isotope distribution( Mass No./% ) 140/ 88.4
Natural isotope distribution( Mass No./% ) 142/ 11.1
Natural isotope distribution( Mass No./% ) 138/ 0.3
Atomic radius - Goldschmidt( nm ) 0.182
Ionisation potential( No./eV ) 2/ 10.85
Ionisation potential( No./eV ) 1/ 5.47
Ionisation potential( No./eV ) 3/ 20.20
Ionisation potential( No./eV ) 4/ 36.72
Mechanical Properties
Element Value
Material condition Polycrystalline
Material condition Cast
Poisson's ratio 0.248
Poisson's ratio 0.248
Bulk modulus( GPa ) 24.4
Bulk modulus( GPa ) 24.4
Tensile modulus( GPa ) 33.5
Tensile modulus( GPa ) 33.5
Hardness - Vickers( kgf mm⁻² ) 25-30
Tensile strength( MPa ) 102
Yield strength( MPa ) 91
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 85.4@20°C
Temperature coefficient( K⁻¹ ) 0.0087@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 1.14
Physical Properties
Element Value
Boiling point( C ) 3426
Density( gcm⁻³ ) 6.75@20°C
Thermal Properties
Element Value
Melting point( C ) 799
Latent heat of evaporation( J g⁻¹ ) 2680
Latent heat of fusion( J g⁻¹ ) 37.3
Specific heat( J K⁻¹ kg⁻¹ ) 205@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 11.3@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8@0-100°C
each

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Available Configurations

Properties common to all products in this list

Commodity: Metals Material: Cerium Form: Foil (Light Tight) Composition: Ce CAS Number: 7440-45-1 Purity: 99.9% Temper: As Rolled Coating: Uncoated Opacity: Light Tight Surface Finish: Standard

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