Patent ID: 8746174
Filing Date: 2014-06-10
Classification: B23H,C23C,H01J,H01L

Abstract:
1. A discharge surface treatment apparatus that supplies an electrode material to a surface of a treatment target member by generating pulsating discharges across an inter-electrode gap, which is a clearance between a discharge surface treatment electrode and the treatment target member, and forms a coating of the electrode material, comprising: a switching element that turns application of a voltage from a power source to the inter-electrode gap on/off; a capacitance element that is connected to the switching element to be in parallel with the inter-electrode gap between the switching element and the inter-electrode gap; an inductance element that is connected in series between the switching element and the inter-electrode gap, and that is connected at one end to the capacitance element and at the other end to the inter-electrode gap; and a control unit that includes a function of periodically performing on/off so that an induced electromotive force generated in the inductance element due to a change in the current of discharge generated across the inter-electrode gap can be used as a voltage that induces the next discharge.