Chromate-free method for surface etching of titanium

Details Chromate-free method for surface etching of titanium Chromate-free method for surface etching of titanium

2006-04-04

2006-04-04

Norton, Nadine G. (Department: 1765)

Compositions

Etching or brightening compositions

C252S079200, C252S079300, C438S745000, C216S100000, C216S102000, C216S105000, C216S108000, C216S109000

Reexamination Certificate

active

07022254

ABSTRACT:
Non-chromate solutions for treating and/or etching metals, particularly, aluminum, aluminum alloys, steel and titanium, and method of applying same wherein the solutions include either a titanate or titanium dioxide as a “drop-in replacement” for a chromium-containing compound in a metal surface etching solution that otherwise would contain chromium.

REFERENCES:
patent: 5451271 (1995-09-01), Yoshida et al.
patent: 5705082 (1998-01-01), Hinson
patent: 2004/0180799 (2004-09-01), Tucker et al.

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