The influence of the exposed electrode material on the development of surface barrier discharge in air

The aim of this work is to study the influence of the exposed electrode material on the dynamics of the surface dielectric barrier discharge characteristics during its long-term operation. A comparison of the structure and dynamics of the discharge power during continuous operation for 200 min on electrodes made of copper, nickel, molybdenum and aluminum was carried out. The discharge on copper and nickel electrodes has a high degree of non-uniformity along the electrode span. In the case of aluminum and molybdenum electrodes, the discharge looks like a diffuse glow region. During long-term operation of the discharge on copper and molybdenum electrodes, a noticeable increase in the power dissipated in the discharge is observed, while in the case of nickel and aluminum electrodes, it decreases. The reason for the different behavior of the electrodes during modification in the discharge is the binding energy of the oxides and their electrical conductivity.