[GuyBFF]

Anodization is a form of corrosion, but will create a barrier against further corrosion. Although it seems in theory it should be enough, it's never completely perfect and you should take all precautions in a mixed metal system that you normally would.

One note though is that anodization is also a thermal barrier, and although I would prefer an anodized block if I was mixed metal, at least remove the anodization from the base of the aluminum units by lapping them flat.