Boron Foil

Boron Foil is characterized by its high hardness, low density, and excellent chemical stability, making it a robust choice for specialized environments. These qualities lend themselves to demanding industries such as electronics, optics, and high-temperature manufacturing. In practical terms, boron foil is used in semiconductor fabrication, precision optical devices, and as a barrier or protective layer in high-vacuum systems. Technologies like microelectronic circuit shielding, thermal barrier coatings in manufacturing equipment, and protective substrates for optical assemblies leverage its mechanical and chemical resilience. Boron foil’s importance in research stems from its role as a versatile substrate and protective medium in experimental setups where purity and stability are paramount. Its industrial value lies in enabling precise, reliable performance in advanced fabrication and operational contexts.

Quick Links:

Tolerance

Properties

Reference & Citations

each

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	5
Crystal structure	Tetragonal
Electronic structure	He 2s² 2p¹
Valences shown	3
Atomic weight( amu )	10.81
Thermal neutron absorption cross-section( Barns )	672
Photo-electric work function( eV )	4.5
Natural isotope distribution( Mass No./% )	11/ 80.2
Natural isotope distribution( Mass No./% )	10/ 19.8
Atomic radius - Goldschmidt( nm )	0.097
Ionisation potential( No./eV )	4/ 259
Ionisation potential( No./eV )	2/ 25.2
Ionisation potential( No./eV )	1/ 8.30
Ionisation potential( No./eV )	5/ 340
Ionisation potential( No./eV )	337.9

Mechanical Properties

Element	Value
Hardness - Mohs	9.5
Material condition	Arc melted
Tensile modulus( GPa )	441
Tensile strength( MPa )	1580-2410

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	1.8x10¹²@27@27°C

Physical Properties

Element	Value
Boiling point( C )	3700
Density( gcm⁻³ )	2.34-2.37@20°C

Thermal Properties

Element	Value
Melting point( C )	2180
Latent heat of evaporation( J g⁻¹ )	35000
Latent heat of fusion( J g⁻¹ )	2090
Specific heat( J K⁻¹ kg⁻¹ )	1030@25°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	8.3@0-100°C