The influence of full-wave sinusoidal, and positive half-wave and negative half-wave rectified sinusoidal potentials superimposed at three DC levels on a Cu-10Ni (CDA 706) alloy immersed in a 3.3% NaCl solution under nitrogen, as well as air, purge on the material degradation behavior was investigated. The results obtained show that although the material degradation rate is strongly influenced by the choice of the applied DC potential level, the more anodic the DC potential, the greater is the corrosion rate. Evidence of intergranular corrosion and cracking is observed. However, no pitting is observed with alternating voltage (AV) modulation in spite of the presence of chloride anions. The material dissolution rate of the alloy was found to decrease with frequency of the AV signal. The rate of alloy dissolution was found to increase with the AV peak potential, as well as with the DC potential. In general, the DC potential is observed to affect the magnitude of the metal dissolution rate more than the corresponding equivalent AV peak potential. It does not appear that imposition of AV signals alters the basic mechanism of corrosion of cupro-nickel alloys.