2023/08/08 by Sergey Gortschakow, Diego González, Ralf Methling +4 · 1 voice
Engineering · Physics and Astronomy · #Advanced Sensor Technologies Research #Metal and Thin Film Mechanics #Vacuum and Plasma Arcs
paper · pdf · doi:10.14311/ppt.2023.1.5
openalex publication_date 2023/08/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
Properties of high-current vacuum arcs in dependence on electrode surface status have been studied. The AC current pulses with 16kA (rms) at 50Hz have been applied to spiral contact system made of conventional CuCr material. Each contact pair was loaded with 20 shots. Arc diagnostics comprises arc current and voltage measurements as well as various optical diagnostics. Two high-speed cameras were used for analysis of arc dynamics. Near infrared radiation spectroscopy was applied for determination of the anode surface temperature after the arc extinguishing. The results show clear changes in arc dynamics and anode surface temperature with progressing surface ageing.