-- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

topic 653

Low weight alternatives to circuit board finishing


We are bonding circuit boards to beryllium-aluminum alloy frames with silver filled conductive epoxy adhesive. Beryllium-aluminum is used as the frame material to reduce weight (this is for an aerospace application).

Nickel coating of the frames to prevent corrosion between the frames and the silver filling is adds significant weight. The galvanic couple between aluminum and nickel causes the need for nickel coating to be for the entire system once one part of the system is nickel coated.

Any suggestions for alternate lighter weight means of protecting the interface is greatly appreciated.

Steven Axelband
- avionics


It sounds as if you need an electrically conductive epoxy primer to prime the components prior to bonding. I need the same thing! Hopefully we will see a response.

James H. Pfeifer


RE: "Any suggestions for alternate lighter weight means of protecting the interface is greatly appreciated", You may want to look at silicon polymer materials, or possibly manganese, copper, zinc, bismuth, gold. The silicon polymer material can be somehow infused into the aluminum-beryllium alloy. Chuck

Chuck Shaw
- Ferndale, Washington

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 Q or A to THIS thread START a NEW THREADView This Week's HOT 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

©1995-2017     -    Privacy Policy
How Google uses data when you visit this site.