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Best plating for oxygen-free copper wire for high temp application?

July 7, 2011

We are developing a high temperature electro-magnet coil which required testing up to 2000 hrs at 230° C, and that design is open coil thru-hole with bare leads. So up to now we tried tin/lead plating, solder plating, silver plating on copper leads. But the problem is that after that much 2000 hrs testing the leads are getting dark and plating is come out somewhere. So is there anybody there who can help me which plating is the best for this kind of situation? How about nickel plating. And if it is good than it should be only nickel or nickel/gold or anything else??
Thanks in advance.
waiting for reply.

Milan Patel
product designer - Fullerton, California, USA

Nickel plating.

Jeffrey Holmes, CEF
Spartanburg, South Carolina
July 11, 2011

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