Method of apparatus for depositing oxide-cathode precursor material on a cathode substrate by air spraying

Method and apparatus for depositing a layer of oxide-cathode precursor material on a cathode substrate includes passing a slurry of precursor material from a pool of slurry in a closed pressurized vessel through a tubular means to an air spray gun, wherein the tubular means presents a predetermined...

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Bibliographische Detailangaben
Hauptverfasser:	RANGACHAR, HEMMIGE V
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY NOZZLES PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	Method and apparatus for depositing a layer of oxide-cathode precursor material on a cathode substrate includes passing a slurry of precursor material from a pool of slurry in a closed pressurized vessel through a tubular means to an air spray gun, wherein the tubular means presents a predetermined resistance to the flow of slurry. Compressed gas flowing through the gun produces a fluctuating siphon pressure in the tubular means and produces a spray of slurry which is scanned across the substrate. The flow resistance in the tubular means dampens the fluctuating component of the siphon pressure while the pressure in the vessel overcomes the flow resistance, controls the slurry flow rate, and makes the flow rate less susceptible to variation due to other factors.