Chromate-free method for surface etching of stainless steel

Details Chromate-free method for surface etching of stainless steel Chromate-free method for surface etching of stainless steel

2006-09-05

2006-09-05

Norton, Nadine (Department: 1765)

Semiconductor device manufacturing: process

Chemical etching

Liquid phase etching

C252S079100, C252S079400

Reexamination Certificate

active

07101808

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: 2790738 (1957-04-01), Alexander et al.
patent: 3145178 (1964-08-01), Boettner et al.
patent: 5073589 (1991-12-01), Milovich et al.
Search on Google, MSDS by Tradename, Jun. 16, 2006, 1 page.
Search on Google, NACCONOL(R) 90G, Jun. 16, 2006, 1 page.

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