Lanthanum Foil

Lanthanum Foil is characterized by its high reactivity, ability to form stable oxides, and unique electronic properties, making it a material of significant interest in both applied and fundamental research. Its chemical reactivity enables effective passivation layers, while its electronic configuration supports catalytic and surface modification studies. This foil is used extensively in industries such as energy storage, catalysis, and protective coatings. Specific applications include corrosion-resistant layers for tinplate in packaging, alloying experiments to enhance oxidation resistance in high-temperature environments, and novel electrode materials for next-generation batteries. Research highlights its role in improving sulfide-stain resistance, replacing toxic chromate coatings, and enabling superior high-temperature oxidation resistance in alloys. In both scientific and industrial contexts, Lanthanum Foil is a valuable platform material that underpins advances in energy, environmental protection, and materials innovation.

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Tolerance

Properties

Reference & Citations

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Tolerances

Foil

Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±15%
Thickness	>0.05mm	±10%

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	57
Crystal structure	Hexagonal close packed/Face centred cubic
Electronic structure	Xe 5d¹ 6s²
Valences shown	3
Atomic weight( amu )	138.9055
Thermal neutron absorption cross-section( Barns )	8.9
Photo-electric work function( eV )	3.5
Natural isotope distribution( Mass No./% )	139/ 99.91
Natural isotope distribution( Mass No./% )	138/ 0.09
Atomic radius - Goldschmidt( nm )	0.187
Ionisation potential( No./eV )	3/ 19.18
Ionisation potential( No./eV )	1/ 5.58
Ionisation potential( No./eV )	2/ 11.06

Mechanical Properties

Element	Value
Material condition	Polycrystalline
Poisson's ratio	0.28
Bulk modulus( GPa )	24.8
Tensile modulus( GPa )	37.9
Hardness - Vickers( kgf mm⁻² )	40
Tensile strength( MPa )	131
Yield strength( MPa )	124

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	57@20@20°C
Superconductivity critical temperature( K )	4.88
Temperature coefficient( K⁻¹ )	0.00218@0-100°C

Physical Properties

Element	Value
Boiling point( C )	3457
Density( gcm⁻³ )	6.174@20°C

Thermal Properties

Element	Value
Melting point( C )	921
Latent heat of evaporation( J g⁻¹ )	2897
Latent heat of fusion( J g⁻¹ )	60.2
Specific heat( J K⁻¹ kg⁻¹ )	197@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	13.4@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	4.9@0-100°C