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SiO2 granule
0.5-3mm
1-3mm
2-4mm
or customization
99.99%
Chemical name: SiO2
Boiling point: 2230℃
Purity: 4N
Specification: 1-4mm, particle, target
Molecular weight: 60.08
Appearance: white
Melting point: 1700℃
Density: 2.2-2.7g/cm3
In 10-4Torr vacuum evaporation temperature is: 1025℃
Transparent area /nm:200-8000
Relative dielectric constant: 3-4
Breakdown voltage /V? Cm-1:106
Thickness:0.03-0.3μm
Deposition technology: reactive sputtering
Refractive index (wavelength /nm):1.46 (500)；1.445 (1600)
Linear expansion coefficient / C -1:5.5 * 10-7
Evaporation mode: electron beam
Performance: available tantalum boat heating evaporation, also can use three two aluminum oxide crucible heating evaporation, but by resistance heating evaporation will produce by decomposition, electron beam evaporation, the effect is very good; insoluble in water and acid, but soluble in hydrofluoric acid; the particles can act with molten alkali;
Application: silica is widely used, mainly for the cold light film, antireflection films, multilayer film, filter, insulation film, glasses film, UV film etc..