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Aluminum plating solution
2002
Q. Hi I am trying to electroplate aluminum metal into the pores of alumina. Can I get a ready-made aluminum plating solution?
Phaneendra MedidaDrexel University - Philadelphia ,PA,USA
2002
A. Hi Phaneendra. Aluminum is too active a metal to electroplate in the conventional sense (out of an aqueous plating bath), so no such solutions are available.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2006
Q. If you could please explain what you mean by aluminum being too active of a metal for conventional plating methods I would appreciate it.
Thank You
- Elizabeth City North Carolina USA
2006
Metals range from very noble (wanting to come out of solution / stay out of solution / stay metallic), like gold and platinum, to very active (wanting to remain in solution, combined with other materials), like sodium.
When a highly active metal is dissolved in a water-based (aqueous) solution and you try to electroplate it out, all that will happen is the water will separate into hydrogen and oxygen (or hydroxide). You'll reduce hydrogen from H+ to H (actually H2, hydrogen gas) before you will be able to reduce Al++ to aluminum (metal).
It is possible to electroplate aluminum out of molten salts, and organic solutions in an oxygen-free environment, but that doesn't sound like an answer to Phaneedra's situation.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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