Selective process for etching chromium

Details Selective process for etching chromium Selective process for etching chromium

1984-04-09

1985-02-12

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156652, 156656, 1566591, 252 792, 252 794, C23F 102, B44C 122, C03C 1500, C03C 2506

Patent

active

044989547

ABSTRACT:
A selective method of etching chromium is described. In the present invention an etching cycle, including etching with a first solution including potassium permanganate and then with a second solution including oxalic acid is defined. Such a cycle will remove a thin layer of chromium and may be required to be performed a plurality of times to complete the etching process.

REFERENCES:
patent: 3930857 (1976-01-01), Bendz et al.
patent: 4160691 (1979-07-01), Abolafia et al.

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