Improving Powder Injection in Plasma Spraying by Optical Diagnostics of the Plasma and Particle Characterization

被引：0
作者：
Georg Mauer
Robert Vaßen
Detlev Stöver
Stefan Kirner
José-Luis Marqués
Stephan Zimmermann
Günter Forster
Jochen Schein
机构：
[1] Institut für Energieforschung (IEF-1),
[2] Forschungszentrum Jülich GmbH,undefined
[3] Institut für Plasmatechnik und Mathematik IPM (LPT),undefined
[4] Universität der Bundeswehr München,undefined
来源：
Journal of Thermal Spray Technology | 2011年 / 20卷
关键词：
computer tomography; diagnostics; DPV-2000; plasma spraying; powder injection; TriplexPro™;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Powder injection parameters such as gas flow, injection angle, and injector position strongly influence the particle beam and thus coating properties. The interaction of the injection conditions on particle properties based on DPV-2000 measurements using the single-cathode F4 torch is presented. Furthermore, the investigation of the plasma plume by emission computer tomography is described when operating the three-cathode TriplexPro™ torch. By this imaging technology, the three-dimensional shape of the radiating plasma jet is reproduced based on images achieved from three CCD cameras rotating around the plume axis. It is shown how the formation of the plasma jet changes with plasma parameters and how this knowledge can be used to optimize particle injection.
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页码：3 / 11
页数：8
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