Publication details

Manipulation of powdery materials by a sequentially pulsed coplanar barrier discharge

Authors

RÁHEĽ Jozef ZEMÁNEK Miroslav ILČÍKOVÁ Martina ZISCHKA Radek HAŠANA Jaromír

Year of publication 2019
Type Article in Proceedings
Conference SAPP XXII, Book of Contributed Papers
MU Faculty or unit

Faculty of Science

Citation
Keywords plasma; DBD; ceramic powders
Description Practical implementation of dielectric barrier discharge (DBD) plasma activation of fine powders requires a proper management of their transport through the active discharge zone. We present results of a new method for the powder transport, which takes benefit from the natural tendency of powders to concentrate outside the DBD’s microfilament plasma channel. We have extended the number of DBD high voltage electrodes to 3 and 4 and started to sequentially energize only a chosen electrode pair. Locally fired plasma caused powders to pile up outside the formed discharge zone. Switching to another electrode pair shifted the place where powders pile up to a neighboring area. At optimized conditions, the repetitive shift of piling area was sufficient to initiate the directional drift of treated powders.
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