Method of making a long-life high-current-density cathode from tungsten and iridium powders using a mixture of barium peroxide and a coated emitter as the impregnant
Patent
·
OSTI ID:7200658
A long life high current density cathode is made from a mixture of tungsten and iridium powders by processing the mixture of powders with an activator into a porus billet, and then impregnating the billet with a mixture of barium peroxide and a coated emitter by firing the billet in a dry hydrogen furnace at a temperature at which the impregnant melts.
- Research Organization:
- Department of the Army, Washington, DC (USA)
- Assignee:
- Department of the Army, Washington, DC (USA)
- Patent Number(s):
- A US 7-439135
- OSTI ID:
- 7200658
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CATHODES
CHALCOGENIDES
COATINGS
CURRENT DENSITY
DISPERSIONS
DOCUMENT TYPES
ELECTRODES
ELEMENTS
FABRICATION
FURNACES
HYDROGEN
IMPREGNATION
IRIDIUM
METALLURGY
METALS
MIXTURES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PATENTS
PEROXIDES
PLATINUM METALS
POROSITY
POWDER METALLURGY
POWDERS
PROCESSING
SERVICE LIFE
SIZE
TRANSITION ELEMENTS
TUNGSTEN
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CATHODES
CHALCOGENIDES
COATINGS
CURRENT DENSITY
DISPERSIONS
DOCUMENT TYPES
ELECTRODES
ELEMENTS
FABRICATION
FURNACES
HYDROGEN
IMPREGNATION
IRIDIUM
METALLURGY
METALS
MIXTURES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PATENTS
PEROXIDES
PLATINUM METALS
POROSITY
POWDER METALLURGY
POWDERS
PROCESSING
SERVICE LIFE
SIZE
TRANSITION ELEMENTS
TUNGSTEN