Electrodes of a Vacuum Chamber under the Action of an Arc in the Explosive Melting Zone

摘要

After repeated exposure to an arc vacuum discharge, Cu (60%)-Cr (40%) alloyed systems show a change in the atomic concentration of copper (from 53.7 to 71.8 at %) and, correspondingly, of chromium. Mass spectrometry showed the presence in the residual atmosphere of diffusion devices of fragments of C(x)H(y)(+)type molecules and molecules desorbed from all parts of the chamber-residual gas ions (CO2+, H2O+ N-2(+), N+ and their polyatomic compositions). The inheritance of technological impurities from previous operations in the mass spectrum was found.