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Blackening of aluminum

2000

In the metal finishing guide book there is a formula to blacken aluminum made as follows:

ammonium molybdate 2 oz/gal
ammonium chloride 4 oz/gal
boric acid 1 oz/gal
potassium nitrate 1 oz/gal
tem: 180 F

Did anyone ever use that solution? does it work well? What is each product's function in the solution? which one etch the aluminum/ which one produces the black finish?

What about troubleshooting? Where can we get some more information on this solution?

Veronica Dewis
- Miami, Florida USA

Birchwood-Casey Aluminum Black
on
Amazon

(affil links)

I tried this formula, didn't work for me!

I Wallace
- LA.California
2000

TRY ALUMINUM BLACK FROM ANY GUN /SPORTING GOODS STORE, WORKS GOOD.

DALE ORNDORFF
- GRAND ISLAND, New York
2001

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