Abstract No.:	2834
Title:	Metal powder injection into the plasma torch LARGE
Authors:	Stephan Zimmermann* / University of the Federal Armed Forces Munich, Germany Dipl.-Wi.-Ing. Alexander Boll / ATZ Entwicklungszentrum, Abteilung Neue Materialien , Germany Dipl.-Ing. Gerhard Wolf/ ATZ Entwicklungszentrum, Abteilung Neue Materialien , Germany Dipl.-Ing. Gerold Dimaczek/ ATZ Entwicklungszentrum, Abteilung Neue Materialien , Germany Christoph Gallian/ Universität der Bundeswehr München, Institut EIT1, IPM (LPT), Germany Markus Grohmann/ Universität der Bundeswehr München, Institut EIT1, IPM (LPT), Germany Prof. Dr.-Ing. Klaus Landes/ Universität der Bundeswehr München, Institut EIT1, IPM (LPT), Germany Prof. Dr.-Ing. Jochen Schein/ Universität der Bundeswehr München, Institut EIT1, IPM (LPT), Germany
Abstract:	The LARGE (LONG ARC GENERATOR) is a new generation DC-plasma torch featuring an extended arc which is operated with a perpendicular gas flow to create a wide (up to 45 cm) plasma jet well suited for large area plasma processing. Former applications were focused on activation of surface treatments, CVD processes, surface sterilizations and cladding of polymer folios. In addition to this new measurements testing the suitability for powder deposition with low melting point metals and alloys were performed and validated for large area surface coating. This paper begins with the description of the principle of operation of this special plasma torch. Afterwards an overview of the experimental setup of the powder injection into the plasma jet combined with a description of powder analysis after passing the plasma jet is given. The obtained results are described. New concepts and embodiments of homogeneous large area powder deposition systems and ideas for surface treatment are discussed. The paper concludes with an outlook for future research with respect to plasma torch LARGE.

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