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June 1998

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Subject:
Adhesives on Solder
From:
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Date:
Tue, 9 Jun 1998 11:34:40 +0200
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Adhesives (571 bytes) , Adhesives (1531 bytes) 
Salve TechNet.
What happens when you try to use silverepoxy on Sn60/Pb40? Especially if
the electrolytically applied solder is greenish because of surface
acting brightners (nanometers or less). Adhesives on solders are not
recommended, but why? What happens chemically in the interface that can
give you a weak bond or no bond at all? Will the epoxy's curing media be
defect by som interference with the solder? Or will the epoxy start
oxydizing of the Lead? Or something with the surface energies? Or
what....? /
                             Ingemar @ Ericsson Microwave Systems

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