Plasma-surface interactions associated with electrical breakdown of water using porous ceramic-coated electrodes

0352937 - ÚFP 2011 JP eng C - Conference Paper (international conference)
Lukeš, Petr - Člupek, Martin - Babický, Václav - Šunka, Pavel
Plasma-surface interactions associated with electrical breakdown of water using porous ceramic-coated electrodes.
Proceedings of International Workshop on Plasmas with Liquids (IWPL 2010). Vol. I-01. Matsuyama, Ehime: Ehime Yoko Co.Ltd, 2010, s. 9-10. ISBN N.
[International Workshop on Plasmas with Liquids (IWPL 2010). Matsuyama (JP), 22.03.2010-24.03.2010]
R&D Projects: GA AV ČR IAAX00430802
Institutional research plan: CEZ:AV0Z20430508
Keywords : corona discharge * water * ceramic * electric breakdown * surface charge
Subject RIV: BL - Plasma and Gas Discharge Physics
http://plasma.eng.ehime-u.ac.jp/IWPL_2010/IWPL2010_ProceedingsV3.pdf

Electrical breakdown of water using porous ceramic-coated rod electrodes were investigated for two types of ceramics, oxide (corundum) and silicates (almandine). Properties of the ceramic layer and its interaction with the electrolyte, i.e., surface chemistry at the electrolyte/ceramic surface interface, were found as important factors in generating electrical discharges in water. The buildup of surface charge, which was determined by the polarity of the applied voltage, pH and chemical composition of aqueous solution, led to the formation of an electrical double layer at the ceramic surface. Under an externally applied electric field, this double layer becomes polarized, which affected the electric field distribution on the ceramic electrode and conditions needed for initiation of the discharge in water.
Permanent Link: http://hdl.handle.net/11104/0192316