Materion AIF3 Aluminum Fluoride for Optical Coating

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Materion AIF3 Aluminum Fluoride for Optical Coating
Categories:	Ceramic; Halide
Material Notes:	Fluoride compounds are used in coatings for the UV to middle-IR regions. They provide the lowest refractive indices and therefore are essential components of anti-reflective coatings. Fluoride films display absorption bands in the IR regions 2.8-3.2 µm and 6.0-7.4 µm to varying depths, depending on the compound and thedeposition method and parameters. High substrate temperatures, E-beam and IAD are methods that reduce the depths of the absorptions. Aluminum Fluoride, AlF3, is a well-known material which has previously been used as a coating material where a low index was required. It is not affected by water and has good mechanical strength. Information provided by Materion.
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Available Properties
Density, Crystal Melting Point Refractive Index Refractive Index Refractive Index Refractive Index Refractive Index Refractive Index Refractive Index Transmission, Visible, 8% Absorption Transmission, Visible, 4% Absorption Transmission, Visible, 2% Absorption Transmission, Visible, <1% Absorption Transmission, Visible, 0% Adsorption

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Manufacturer Notes:
Materion Corporation (former Williams Advanced Alloys)

Category Notes
none

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