Surface-treated aluminum material and method for its surface tre

Details Surface-treated aluminum material and method for its surface tre Surface-treated aluminum material and method for its surface tre

1995-01-31

1995-10-31

Silverberg, Sam

Etching a substrate: processes

Nongaseous phase etching of substrate

With measuring, testing, or inspecting

148272, 148275, 148626, 148667, 216101, 216103, C23C 806

Patent

active

054626340

ABSTRACT:
An aluminum material is surface-treated with an aqueous solution containing 0.005 mol/lit. or more of a chelating agent and 5 g/lit. or more of an organic amine and having 100 ppm or less of phosphoric acid radical ion concentration and 500 ppm or less of sulfuric acid radical ion concentration, until its surface has a color tone (S) of:

REFERENCES:
patent: 3499780 (1970-03-01), Etherington
patent: 4087367 (1928-05-01), Rioult
patent: 4235648 (1980-11-01), Richardson
patent: 4451304 (1984-05-01), Batiuk
patent: 4477290 (1984-10-01), Carrol
patent: 4614607 (1986-09-01), Loch
patent: 4619731 (1986-10-01), Buttry

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