Aluminium oxides

Al2O3 Aluminium oxide tablet

Al2O3 ,(Aluminium oxides) are chemical compounds with white or clear appearance that can be found in the nature as the mineral corundum.

Specifications

ShapeColorPurityPackageStorage
CrystalGranule1-3 mm
3-5 mm
Colorless
Transparent
99.99%1 Kg/BagAvoid exposure to sunlight & acid
Keep dry
SinterTablet9x5 mm
Upon demand
White

Characteristics of aluminium oxide

CAS NumberDensity (g/cm3)Boiling point (Cº)Melting point (Cº)Refractive index at 550 (nm)Transparency range (µm)Evaporation source
1344-28-13.6297720201.540.17-9B(W), E
ApplicationsAR coating; Glasses coating; Protective coating

Evaporation technique

To evaporate thermally aluminium oxide it is required high temperatures to obtain reasonable deposition rates. Electron beam evaporation is preferred for depositing aluminium oxide films as the material is rated excellent for this method. It can be evaporated from a tungsten crucible liner or from the copper hearth.