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Material for electrodes of low temperature plasma generators

United States Patent

March 2, 2010
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
Material for electrodes of low temperature plasma generators. The material contains a porous metal matrix impregnated with a material emitting electrons. The material uses a mixture of copper and iron powders as a porous metal matrix and a Group IIIB metal component such as Y.sub.2O.sub.3 is used as a material emitting electrons at, for example, the proportion of the components, mass %: iron:3-30; Y.sub.2O.sub.3:0.05-1; copper: the remainder. Copper provides a high level of heat conduction and electric conductance, iron decreases intensity of copper evaporation in the process of plasma creation providing increased strength and lifetime, Y.sub.2O.sub.3 provides decreasing of electronic work function and stability of arc burning. The material can be used for producing the electrodes of low temperature AC plasma generators used for destruction of liquid organic wastes, medical wastes, municipal wastes as well as for decontamination of low level radioactive waste, the destruction of chemical weapons, warfare toxic agents, etc.
Caplan; Malcolm (Fremont, CA), Vinogradov; Sergel Evge'evich (St. Peterburg, RU), Ribin; Valeri Vasil'evich (St. Peterburg, RU), Shekalov; Valentin Ivanovich (St. Peterburg, RU), Rutberg; Philip Grigor'evich (St. Peterburg, RU), Safronov; Alexi Anatol'evich (St. Peterburg, RU), Shiryaev; Vasili Nikolaevich (St. Peterburg, RU)
Lawrence Livermore National Security, LLC (Livermore, CA)
10/ 445,177
May 23, 2003
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.