none conductive coating 1

[robert01]

Hi Guys
I am looking for a none conductive thin (.002-.004 max) coating, to apply to an alum alloy with nickel plate. Is conformal coating suitable?
Later on I have to bond a device to the none conductive surface.
I you have any suggestion I appreciate

 

[MadMango]

Anodize-chromic/sufuric acid (MIL-A-8625) is non-coductive. Build-up is between .00002-.00030 I am not sure if this can be applied over nickle plate you mentioned, or to what degree of voltage it is non-conductive. "The attempt and not the deed confounds us."

 

[TVP]

The anodic treatment cannot be performed over a nickel plating. Anodizing is basically a chemical process to induce oxidation (forming Al₂O₃) of the surface.

There are many different types of organic coatings that are non-conductive, and would provide an excellent base for subsequent adhesion. I would pick something similar to the adhesive you will be using, for example, if the adhesive is epoxy, then coat the nickel plating with an epoxy prior to the final bonding step.

 

[AUME]

I would suggest Tedlar or the use of fiberglass resin. You will of course have to abrade the contact surface, but both products are cheap and user friendly.