ELECTROCHEMICAL MACHINING WITH MICROSECOND PULSES

The results of a study of a high-rate anodic dissolution of chromium-n ickel alloys in concentrated solutions of nitrates and chlorides under transient conditions have been described. It is shown that the use of microsecond mus pulses allows dissolution at high pulse current-densi ties (of about 10(3) A/cm2 or more) and control of anodic dissolution localization by varying the Faradaic and non-Faradaic components of th e current. The experimental results of studying the effect of pulse du ration, current amplitude, and spacing between pulses on the logarithm ic index of dissipation are presented. It was shown that the use of co unterpulses in the spacing between anodic pulses of current decreases the potential relaxation time and speeds up electrochemical machining with the localization properties remaining the same.