Etchant/deoxidizer for aluminum

Details Etchant/deoxidizer for aluminum Etchant/deoxidizer for aluminum

1992-11-03

1993-12-21

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

134 3, 252 793, 427309, B44C 122, C23F 100

Patent

active

052718042

ABSTRACT:
In the etching and deoxidizing of aluminum, suppression of aluminum oxyfluoride crystal formation by the incorporation of phosphoric acid into an etchant/deoxidizer solution containing water, ferric sulfate, nitric acid, and HF or fluoride salts.

REFERENCES:
patent: 4886616 (1989-12-01), Yamasoe et al.
patent: 4980076 (1990-12-01), Tanaka et al.

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