The plasma spray torch considered in the present study is the commercial device Oerlikon Metco F4MB-XL. This is characterized by a single-cathode and a single-anode arrangement. The WL10 cathode by Plansee is made of lantanated tungsten and sticks to a copper holder. The nozzle is cylindrically symmetric and serves as anode. Its cylindrical fragment is partly made of tungsten. The cathode base and the nozzle are water cooled. The gas is fed between the cathode and the anode. The electric current is 600 A.
\n", "procedure": "Al2O3 powder is injected into the plasma jet. The particle size varies between a few \u00b5m and 120 \u00b5m.
\n" }, "medium": { "name": "Ar, H2", "properties": "The plasma is generated in a mixture of Ar (40 NLPM) and H2 (14 NLPM) and in pure Ar.
\n", "procedure": "A plasma jet is generated in a mixture of Ar (40 NLPM) and H2 (14 NLPM) and in pure Ar at an electric current of 600 A.
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