-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 7985

Manager Needs Help! with RF Conductive Finishes


I was delighted to find this chat line from a web search. Perhaps someone can help me understand conductive finishes on aluminum for RF and microwave modules.

We are dealing with an RF component vendor who insists on a silver-plate finish to achieve corrosion resistance together with excellent electrical conductivity. The finish tarnishes, however, and looks unsightly. I remember we used to specify Alodine finishes at another company, but I don't really know what that is. Someone here says it's the same as anodizing, but I'm dubious since anodization is non-conductive and unsuitable for the conductive metal-to-metal contacts needed for high-frequency modules. Someone else says I should specify Iriditing, but I don't know anything about that one.

Help please?
Thanks :-) Manager-in-need

Mark Leifer
Ericsson Wireless - Boulder, Colorado


Alodine and Iridite are essentially the same thing. They are both trade names for chromate conversion coatings. They provide increased corrosion resistance and adhesion properties when applied to aluminum. Chromate conversion coating is not the same thing as anodizing.

Patrick Patton
Q-Panel Lab Products - Westlake, Ohio


You might be requiring the clear coat chemical conversion for your application. I'm not sure with Iridite but Alodine has a special product for this. I think it is Alodine 1000L

Dado Macapagal
- Toronto, Ontario

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.