6 Jan
1998
6 Jan
'98
10:57 p.m.
<The shiny layer is aluminum. I heard of someone who threw a
<favorite cd into lake in frustration, but few years later, found it
<again, it's ruined.
What people fail to realize is that plastics for the most part are not
hermetic! Over time most plastics absorb water and water will react
with aluminum to ozidize it. Same for plastic encapsulated chips!!!
It's that permeability of plastics that cause anything encapsulated
in them to degrade ofver time unless the material is passivated or
chemically stable (gold, platinum...). Heat accelerates the reactions.
Allison