Cyanide free solution and process for removing gold-nickel braze

Details Cyanide free solution and process for removing gold-nickel braze Cyanide free solution and process for removing gold-nickel braze

1980-05-15

1981-06-23

Massie, Jerome W.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

75 97A, 75101R, 75118R, 75119, 156664, 252 792, C09K 1304, C23F 100

Patent

active

042749085

ABSTRACT:
An effective cyanide free solution and process for removing gold-nickel braze alloys from superalloy parts are described. The solution contains about 50% nitric acid with intentional additions of materials which ionize to provide chloride ions, sulfate ions, and metal ions in specific concentrations.

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Flitsch, "Etch for Removing Gold" IBM Technical Disclosure Bulletin vol. 10, No. 4, (9/67) p. 355.

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