Hard coated copper alloys, process for production thereof and co

Details Hard coated copper alloys, process for production thereof and co Hard coated copper alloys, process for production thereof and co

1996-05-15

1998-12-15

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428923, 428926, 428675, 148536, 148537, 148538, 439886, 439887, B32B 1520, C22F 108, H01R 1305

Patent

active

058494243

ABSTRACT:
A coated Cu alloy having a high hardness surface which contains intermetallic compounds consisting essentially of Cu and Sn is produced by coating the surface of a Cu alloy with Sn and heat treating the coated Cu alloy to form on the surface thereof a high hardness coating containing Cu--Sn intermetallic compound(s). The coated Cu alloy has improved resistance to abrasion and corrosion and good workability, which permits producing terminal connectors therefrom. The Cu alloy which is coated with Sn consists essentially of 0.01-15 wt % Ni, 0.1-10 wt % Sn, 0.005-0.5 wt % P, and optionally 0.01-40 wt % in total of one or two or more elements selected from the group consisting of Fe, Co, Zn, Ti, Mg, Zr, Ca, Si, Mn, Cd, Al, Pb, Be, Te, In, Ag, B, Y, La, Cr, Ce and Au, with the balance being Cu and incidental impurities.

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