I searched the internet and found a Silicon-Aluminum phase diagram.
Here is the URL:
http://www2.umist.ac.uk/material/research/intmic/phase/alsidiag.htm  The
eutectic composition is approximately 87 wt% Al and the eutectic
temperature is 660C.


-Scott

-----Original Message-----
From: Gary
Sent: Friday, August 12, 2005 10:46 AM
To: 'General MEMS discussion'
Subject: RE: [mems-talk] eutectic point of silicon-aluminum

Li, These materials don't truly alloy, hence there is no eutectic, The
"alloys" are really finely divided mixtures, and manufactured using an
atomization process.