Corrosion resistant high temperature contacts or electrical...

Details Corrosion resistant high temperature contacts or electrical... Corrosion resistant high temperature contacts or electrical...

C - Chemistry, Metallurgy

25

D

C25D 5/12 (2006.01) C25D 5/14 (2006.01) H01R 13/03 (2006.01)

Patent

CA 2069390

CORROSION RESISTANT HIGH TEMPERATURE CONTACTS OR ELECTRICAL CONNECTORS AND METHOD OF FABRICATION THEREOF ABSTRACT The invention provides a composite material specifically adapted for use as high temperature corrosion resistant electrical connectors. A conductiblenickel-base substrate alloy having corrosion resistance, strength and creep resistance is used to hold shape at 200°C. An interlayer of substantially pure nickel is electrolytically plated over the nickel-base substrate. A noble metal surface isdiffusion bonded to the electrolytic nickel interlayer. The noble metal surface cannot be hardened by organic additives which accelerate corrosion at 200°C. Alternatively, if a copper-base substrate is used, a layer of wrought pure nickel is bonded to the substrate then a layer of electroplated nickel is used to overplate the wrought nickel and the copper-base substrate. A noble metal surface is then diffusion bonded to the electrolytic nickel layer.

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