Gold etchant composition and method

Details Gold etchant composition and method Gold etchant composition and method

1978-09-21

1980-02-26

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156656, 252 791, C23F 100

Patent

active

041904893

ABSTRACT:
A composition and method for etching gold, particularly gold layers on ceramic substrates, in which the gold is contacted at room temperature by an aqueous solution of alkali metal bromide and bromine. The composition is relatively safe and easy to handle and rapidly etches gold.

REFERENCES:
patent: 2982626 (1961-05-01), Kainins
patent: 3245891 (1966-04-01), Gary
patent: 3442810 (1969-05-01), Elbreder
patent: 3629023 (1971-12-01), Strehlow
patent: 3778252 (1973-12-01), Wilson
patent: 3816317 (1974-06-01), MacArthur et al.

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