Electroplating copper on top of anodized aluminum

[Conservation]

Hi all,

I'm looking to electroplate a copper layer on top of anodized aluminum. Type II (sulfuric acid) was used to anodize the aluminum, and everything looks pretty good so far. However, I saw somewhere on the internet that one can electroplate a copper layer on top of anodized aluminum; how would this be achieved as the anodized aluminum layer is electrical insulator? Ideally, I would want the copper layer decently thorough and thick for chemical properties.

Thanks.

 

[Simon Bridge]

I saw somewhere on the internet ...

... therefore it must be true!
What did you do to verify this information?
Can you find this source again so we can see what it is talking about?

Certainly you can electroplate an insulator.
http://www.nature.com/nature/journal/v416/n6882/full/416716a.html

 

[SteamKing]

First Law of the Web: They can't put anything on the Internet if it isn't true.

 

[phinds]

First Law of the Web: They can't put anything on the Internet if it isn't true.

Hm ... that statement makes itself inherently true

 

[alphy]

I can confirm that electroplating copper on top of anodized aluminum is possible. Anodized aluminum is an electrical insulator, which means that it cannot conduct electricity. However, this can be overcome by using a technique called "strike plating." This involves depositing a thin layer of conductive material, such as nickel or copper, onto the anodized aluminum before electroplating the copper layer. This conductive layer will allow for the copper to adhere to the aluminum and create a thick and uniform layer.

Additionally, the thickness of the copper layer can be controlled by adjusting the current and plating time during the electroplating process. It is important to note that the anodized aluminum layer should be properly cleaned and prepared before strike plating and electroplating to ensure good adhesion and a high-quality final product.

In terms of the chemical properties, electroplating copper on top of anodized aluminum can provide additional benefits. Copper is known for its corrosion resistance and can help protect the underlying aluminum from corrosion. It can also improve the surface hardness of the aluminum and provide a more aesthetically pleasing finish.

In conclusion, electroplating copper on top of anodized aluminum is a feasible and effective method for achieving a thick and durable copper layer. Proper preparation and strike plating techniques are essential for successful results. I hope this information helps in your project.