copper-graphite connections

From: Steve <Steve@xxxxxxxxxxxxxx>
Date: Tue, 30 Aug 2005 12:53:24 +0100

Hi, Does anyone have experience of making very low resistance copper-graphite fixed connections ? Is there anything I should use to coat the interface to minimise the resistance ? I am just using "naked" graphite and OFHC copper, with screws to clamp a copper washer on top of the sandwich. At 350A, I am dropping around 300mV, which is around 1 milliOhm, with a contact area of around 2 sq inch (~1300 mm^2)

Is one milliohm good ?

Thanks for suggestions.

Steve
.

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