EMULSITONE COMPANY
19 Leslie Court
Whippany, New Jersey 07981
TEL. (973)386-0053
FAX (973)503-0256

ALUMINAFILM

Aluminafilm is a solution which forms a film that upon heating to 400^oC decomposes to yield a thin film of alumina (A1₂0₃).

PROCESSING

Aluminafilm is applied by spinning. At a spin speed of 5000 rpm the alumina film which results after baking at 400^oC for 1 hour in air or in oxidizing atmosphere exhibits a thickness of 1200 angstroms and an index of refraction of 1.53. Aluminafilm will adhere to most surfaces regardless of whether the surface is hydrophilic or hydrophobic.

Aluminafilm is etched extremely rapidly in diluted HF solution. In 5 percent ammonium hydroxide solution at 25^oC, the etch is 1000 angstroms per minute.

CONTAMINANTS

The concentration of metallic contaminants is determined by atomic absorption the limits are as follows:

Aluminafilm is acidic and protective glasses should be worn during use.

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