The low-pressure plasma spray technology (LPPS) has developed into a successful process in coating processes. This paper presents an approach to record the characteristics of an argon plasma jet under LPPS conditions. A numerical model is developed and validated with enthalpy probe measurements and imaging of the supersonic plasma jet. The numerical model used is compared with the results from enthalpy measurements, whereby a very good agreement of the values could be determined. With the help of CCD cameras, the beam shape calculated using the model could be confirmed. With the help of this approach, it is possible to overcome the problems which arise in connection with the use of enthalpy probes in the non-equilibrium plasma jet. The approach also allows the static pressure field of the plasma jet to be calculated. Paper includes a German-language abstract.

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