TECHNET Archives

April 2001

TechNet@IPC.ORG
Options: Use Monospaced Font
Show HTML Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
Re: Immersion silver boards tarnish
From:
Ken Mc Gowan <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 9 Apr 2001 13:49:18 -0100
Content-Type:
multipart/alternative
Parts/Attachments:
text/plain (484 bytes) , text/html (1774 bytes) 
Hi David,

Normal mechanisms of Ag tarnishing are:

Diffusion of copper (do you have a brrier layer of Ni/Pd??)

Presence of sulphides in the atmosphere.

Organic stuff in packaging materials.

Best Regards,

Ken McGowan.
  ----- Original Message ----- 
  From: David 
  To: [log in to unmask] 
  Sent: Monday, April 09, 2001 1:53 AM
  Subject: [TN] Immersion silver boards tarnish


  Has anyone ever exeprienced immersion silver MSP boards tarnishing, turned yellow after stored in ambient condition?

ATOM RSS1 RSS2