Porous films and method of forming them

Details Porous films and method of forming them Porous films and method of forming them

1985-10-10

1987-08-18

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

C25D 1104

Patent

active

046875514

ABSTRACT:
An anodic aluminum oxide film (12) has a system of larger pores (14) extending in from one face (16) and interconnecting with a system of smaller pores (24) extending in from the other face (26). The film is made by anodizing an aluminum metal substrate, then reducing the applied voltage at a rate to permit partial or complete recovery of the oxide film, either continuously or incrementally in small steps down to a level preferably below 3 V, and separating the oxide film from the substrate.

REFERENCES:
patent: 3850762 (1974-11-01), Smith

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