I also have heard that this alloy suffers from oxidation and embrittlement
problems.

-----Original Message-----
From: Andy Mackie <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Wednesday, July 07, 1999 11:12 AM
Subject: [LF] Tin / Zinc


>Just from its melting point (198.5°C), the approximately 91Sn/9Zn eutectic
seems
>to be an ideal alloy for soldering, although the zinc seems to make the
alloy
>prone to corrosion (much like the lead-phase in Sn/Pb) in solder pastes,
and it
>gives excessive drossing in wavesoldering.
>
>I've heard that the zinc phase is a problem AFTER processing, too, but have
>never seen any actual documentation of this: is this a technomyth, or does
>someone out there have evidence of post-assembly corrosion?
>
>Toodle pip,
>
>Andy Mackie
>
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