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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Jim McMannis who wrote (90382)	1/29/2000 12:14:00 PM
From: Dan3	Read Replies (3) \| Respond to of 1572098

Re: Do they use pure copper or some kind of alloy that's a bit harder? You're asking the wrong guy :-( All I know is what I have read in those publications, these message boards, and other web sites. But the articles did mention that wafers that use copper were more sensitive to pressure variations during polishing steps and that a difficulty in processing the wafers was from pits developing during the polishing process as the copper wore away more quickly than other materials (such as aluminum) used previously. Mayber someone else can comment? I just tried the eetimes site again but it still seems to be down. Dan