Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||ZIRCONIUM CATHODE EROSION RATE IN A VORTEX-STABILIZED AIR PLASMA TORCH|
|Abstract:||In the present paper we report on a highly efficient operation of the zirconium cathode in a vortex-stabilized air plasma torch. Our measurements show low erosion rates of the zirconium cathode for two methods of holding the zirconium inserts. Reproducible operation of the plasma torch, together with many turn-on-and-off cycles of the arc, is obtained, for 94 A. We show that the erosion rate is reduced by more than one order of magnitude as the erosion depth grows. We present a possible explanation for this effect. After 50 h of operation of the torch, the erosion depth measured was 3 mm. A formula was obtained that enables one to calculate the specific erosion from the erosion rate. Experimental results of the cathode dissipated power and its connection to cathode erosion are also discussed.|
|Editor:||Iop Publishing Ltd|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.