Abstract
When Au-Ag-Pd alloys contacted electrically with stainless steel, such as type 447J1 and 316L, were immersed in 0.9% NaCl solution at 37℃ for seven days, amounts of ions released from Au-Ag-Pd alloys and stainless steel increased compared with that after a single immersion.The resting potential of each was changed with the immersion time.Au-Ag-Pd Alloys showed more noble potentials initially.However, the potentials of stainless steel increased gradually and were higher than those of the Au-Ag-Pd alloys after a few hours.Mixed potentials initially stayed around the corrosion area of stainless steel with higher current density compared to that with single potential.After potentials were reversed, the mixed potential moved into the corrosion area of Au-Ag-Pd alloys with higher current density.Therefore, the stainless steel initially and Au-Ag-Pd alloys after a few hours were so easy to corrode that both the nobel and base alloys showed accelerated corrosion under these Conditions.
