Titanium dioxide 

Ti3O5 Trititanium Pentoxide cristal granule

TiO2 is the chemical compound with the highest refractive index in the visible range. Films deposited from titanium oxides starting compositions are of the composition TiO2.

Specifications

ShapeColorPurityPackageStorage
SinterTablet8x5 mm
9x5 mm
10x5 mm
Upon demand
White
Black
99.99%1 Kg/BagAvoid exposure to sunlight & acid
Keep dry
Granule1-3 mm; 3-5 mm

Characteristics of titanium dioxide

CAS NumberDensity (g/cm3)Boiling point (Cº)Melting point (Cº)Refractive index at 550 (nm)Transparency range (µm)Evaporation source
13463-67-74.29
220018432.30.36-9RE,RS
ApplicationsAR coating; Beam splitter; Cold light filter; HR coating; Glasses coating

Evaporation technique

Titanium dioxide can be thermally evaporated from a tungsten or Mo-boat. To ensure an acceptable level of outgassing, pressure should be monitored. Titanium dioxide can also be deposited reactively by electron beam evaporation from a Cu-crucible with Mo-liner or from Mo-boats. It melts completely.

 

Trititanium pentoxide 

Ti3O5, described as Ti(IV)-Ti(III), is a semiconductor produced by reduction of TiO2 with hydrogen at high temperatures. It is less outgassing than TiO2 during preparation of the melt. It is then faster the preparation to achieve stable conditions before the start of the evaporation process, and there is less risk of spattering.

Specifications

ShapeColorPurityPackageStorage
CrystalGranule1-3 mm
3-5 mm
Purple black99.99%1 Kg/BagAvoid exposure to sunlight & acid
Keep dry
SinterTablet10x5 mm
Upon demand
Tea black

Characteristics of trititanium pentoxide

CAS NumberDensity (g/cm3)Boiling point (Cº)Melting point (Cº)Refractive index at 550 (nm)Transparency range (µm)Evaporation source
12065-65-54.89
1500-200017002.2-2.30.4-8RE,RS
ApplicationsAR coating; Beam splitter; Cold light filter; HR coating; Glasses coating

Evaporation technique

Trititanium pentoxide can be evaporated from a tungsten boat and it melts without spattering and evaporates smoothly. A Mo-liner can also be employed. Due to its low thermal conductivity of this liner, it is easier to melt the material with less e-beam power before reaching evaporation temperature.

 

Titanium sesquioxide 

Ti2O3, called titanium sesquioxide, is prepared by reacting titanium dioxide with titanium metal at 1600oC.

Specifications

ShapeColorPurityPackageStorage
SinterTablet9x5 mm
Upon demand
Purple99.99%1 Kg/BagAvoid exposure to sunlight & acid
Keep dry
Granule1-3 mm

Characteristics of titanium sesquioxide

CAS NumberDensity (g/cm3)Boiling point (Cº)Melting point (Cº)Refractive index at 550 (nm)Transparency range (µm)Evaporation source
1344-54-34.49
190021301.9-2.30.4-12RE,RS
ApplicationsAR coating; Beam splitter; Cold light filter; HR coating; Glasses coating

Evaporation technique

Ti2O3 is evaporated reactively by electron beam. Its advantage over TiO2 is that no oxygen is released during the melting process, so the risk of spattering is reduced.