Abstract

The corrosion of 90/10 Cu-Ni coupled to Ti6Al4V in 3.5% NaCl solution at different hydrostatic pressures was investigated by means of electrochemical methods, weight loss experiment, SEM/EDS, finite element analysis, etc. The 90/10 Cu-Ni was always found to be the anode part in the galvanic cell at all pressures studied. The galvanic current density and natural corrosion current density of 90/10 Cu-Ni during coupling to Ti6Al4V were both increased with increasing hydrostatic pressure, which resulted in an obvious increase of the total corrosion rate of 90/10 Cu-Ni.

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