Investigation of external capacitance effects on electrochemical discharge drilling

Corrosion Properties and Passive Film Interface of Inconel 718 in NaNO3 Solution for Laser-Assisted Electrochemical Machining

“…These advantages make ECM a better and more economical alternative for use in critical parts made of hard-to-machine conductive materials. ECM has been used to successfully manufacture film cooling holes, blisks, gearboxes, and other components in the aviation and aerospace industries. Although ECM is now indispensable in the aviation and aerospace industries, its use for high localization processing to achieve shape profiling is limited by the extent of its electrochemical stray corrosion.…”

“…These advantages make ECM a better and more economical alternative for use in critical parts made of hard-to-machine conductive materials. ECM has been used to successfully manufacture film cooling holes, 4 blisks, 5 gearboxes, 6 and other components 7 indispensable in the aviation and aerospace industries, its use for high localization processing to achieve shape profiling is limited by the extent of its electrochemical stray corrosion. Multiple efforts have been made to improve the processing localization in ECM, such as gas film shielding 8 and auxiliary flexible electrodes, 9 reducing the pulse width to ultrashort level, synchronization of pulses and oscillations, and introducing laser irradiation.…”