Thanks for your reply David. I have Au and Si preform for eutectic die attach and we are having issues with scrub/wetting. So I wanted to see if the Si % was really 2% so I was surprised to see it precipitated out, I just thought the alloy would have a consistent appearance. Thanks again.
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Lori Sarnecki
Senior Materials Analysis Engineer
Rochester Electronics
Scarborough ME
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Original Message:
Sent: 02-16-2024 08:06
From: David Coulston
Subject: Au Eutectic Die Attach
The Au-Si phase diagram would certainly lead us to believe that!
Original Message:
Sent: 2/15/2024 2:08:00 PM
From: Lori Sarnecki
Subject: Au Eutectic Die Attach
Hello, Does anyone know if it is typical for the Si to precipitate out of the Au in preforms that are 98% Au and 2% Si?
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Lori Sarnecki
Senior Materials Analysis Engineer
Rochester Electronics
Scarborough ME
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