Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
-----
Coating Magnesium
We are trying to protect magnesium prior to painting without much success. We have soaked the part in a chromic acid-sodium nitrate ⇦this on Amazon [affil link] solution for 5 mins. Then soaked in a sodium dichromate -sodium sulphate sol. for 5 mins. Rinsing between dips. The part developed a heavy smut after the first sol. but no dull golden to dark brown coating after the second solution. Can you offer any assistance on where we may be going wrong?
Frank Dunleavyaerospace plating shop - Dublin, Ireland
2004
If you could obtain a copy of this specs- AMS2475 (magnesium chemical film treatment) , you may have a good idea on what to do.
Asyong SalunggaAluminum surface finishing - Toronto
2004
----
Ed. note: We also have an FAQ on magnesium finishing on-line here.
adv.
this text gets replaced with bannerText
this text gets replaced with bannerText
(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)
Q, A, or Comment on THIS thread -or- Start a NEW Thread
Q, A, or Comment on THIS thread -or- Start a NEW Thread