DEVICE FOR ELECTRICAL DISCHARGE COATING AND METHOD FOR ELECTRICAL DISCHARGE COATING

摘要

By using a green compact of metal powder, a metal compound powder, or a ceramic powder as an electrode, a pulse-like discharge is generated by applying a voltage equal to or larger than 500 volts between the electrode and a workpiece in a gas atmosphere and, with energy of the discharge, a coating consisting of an electrode material or a substance resulting from reaction of the electrode material to the energy of the pulse-like discharge is formed on a surface of the workpiece.