Both of you are confirming some of my fears. Because the plating will not flake off like paint, it traps moisture and exacerbates the corrosion. Even worse the copper is the more cathodic material in this situation. Exactly the opposite of what I'd like to see, as the case (what I want to...
I have a electronic unit that mounted to communication & Broadcast towers all over the world. It is made of 6061-T6 AL which is then SILVER PLATED. This plating consists of .0001" -.0002" copper plate class 4 flashing under the silver plating (.0003" - .0005"). Obviously the copper to...