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Date: | Thu, 26 Feb 2009 12:30:34 -0500 |
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Dave,
We actually put in a piece of lead. The peak for lead is slightly offset from where we find the peak.
Doctors Turbini and Koo came by with a couple of suggestions:
Turbini - some Bi compounds used as catalysts for polymerization
Koo - Bi amine halides used as flame retardants
Great when I have staff like this! Should have gone to them first before TechNet, but at least we all learn this way. :)
Bev
RIM
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To: TechNet E-Mail Forum ; Bev Christian
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Sent: Thu Feb 26 12:23:37 2009
Subject: Re: [TN] Weird one - bismuth in overmold
Hi Bev - hey, Bismuth and Lead shell lines overlap each other in the 0-10kV range but are distinctly separate in the 10-20kV range. Which range did you use? Could you have a case of mistaken identity?
Dave Hillman
Rockwell Collins
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Bev Christian <[log in to unmask]>
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02/26/2009 09:51 AM
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[TN] Weird one - bismuth in overmold
TechNetters,
In checking a component for one thing or another we found via SEM/EDX
particles of bismuth in the overmold. Smaller amounts of bromine were
also found in the same spots but the largest signal by far was due to
Bi. I have never seen or heard of such a thing before. Can anyone shed
any light on this before I go to the component vendor?
Bev
RIM
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