METHODS FOR CLEANING CATHODES

METHODS FOR CLEANING CATHODES

Methods for cleaning cathodes (7) immersed in electrolytes, especially electrolytes containing ambient deuterium from D2O. The cathode is first driven with a positive voltage and current is drawn until oxygen evolution begins to dominate deuterium oxidation. Then a negative voltage is impressed on t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MICHAEL C. H MCKUBRE, FRANCIS L TANZELLA, STUART I SMEDLEY
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
FUSION REACTORS
METALLURGY
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
PHYSICS
PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS
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Beschreibung
Zusammenfassung:Methods for cleaning cathodes (7) immersed in electrolytes, especially electrolytes containing ambient deuterium from D2O. The cathode is first driven with a positive voltage and current is drawn until oxygen evolution begins to dominate deuterium oxidation. Then a negative voltage is impressed on the cathode and several mA/cm of current density are drawn for at least a day to reform the surface of the cathode (7). For palladium cathodes (7), the purity of the surface (8) is further improved by heating it in a vacuum furnace, cooling it in a deuterium atmosphere, etching the cooled surface in aqua regia, and rinsing it in D2O.