Subject: | |
From: | |
Date: | Thu, 27 Mar 97 16:25:32 cst |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Hi TechNet!
Galvanic corrosion is when you have two dissimilar metals that are
connected by a conductive media that generate a potential difference.
The less corrosion resistant metal will become the anode and the more
corrosion resistant metal will become the cathode - many folks call
this electrochemical corrosion. The more dissimilar the metal pair,
the larger the potential difference, the more corrosion takes place.
Take a look at "Corrosion Engineering" by Fontana and Greene, ISBN
#0-07-021461-1 for more info. Yes, you will get galvanic corrosion if
you have gold in contact with solder AND a conductive media (i.e.
water) is present. What is your use environment? Will a conductive
media be present and for what time period? Don't just look at if you
have a galvanic corrosion possibility but what is the risk impact
based on your use environment and desired functionality. Good Luck.
Dave Hillman
Rockwell Collins
[log in to unmask]
______________________________ Reply Separator _________________________________
Subject: Galvanic Corrosion
Author: [log in to unmask] at ccmgw1
Date: 3/27/97 9:48 AM
Hello technetters, I will try this for the fifth time,I apologize if your
file is loaded with this request, it has been returned to me as undelivered
mail.
If a gold finger with splashes of tin/lead on it "does not" make contact
within a gold socket, will there be galvanic corrosion.
Unfortunately IPC-A-600 does not address reliability issues, if there is
reference material out there, I would like to know.
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]> *
* with <subject: subscribe/unsubscribe> and no text in the body. *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] *
***************************************************************************
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]> *
* with <subject: subscribe/unsubscribe> and no text in the body. *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] *
***************************************************************************
|
|
|