Open AccessUnified modelling of TIG microarcs with evaporation from copper anode
Author(s) -
M. Baeva,
Ralf Methling,
Dirk Uhrlandt
Publication year - 2021
Publication title -
plasma physics and technology
Language(s) - English
Resource type - Journals
eISSN - 2336-2634
pISSN - 2336-2626
DOI - 10.14311/ppt.2021.1.1
Subject(s) - copper , plasma , tungsten , anode , evaporation , materials science , gas tungsten arc welding , inert gas , excited state , ion , atomic physics , metallurgy , chemistry , thermodynamics , electrode , welding , physics , composite material , organic chemistry , arc welding , quantum mechanics
A previously developed unified model of a tungsten-inert gas (TIG) microarc has been extended to take into account the melting of the anode made of copper and the release of copper atoms due to its evaporation. The copper atoms enter the plasma to become excited and ionized. The presence of copper atoms and ions can strongly change the plasma parameters. The extended unified model further includes excited states of copper and collisional and radiative processes between them. Predictions of the parameters of the microarc plasma in the presence of copper species are presented and discussed.