Magnetohydrodynamic electrode

Patent · Tue Mar 01 04:00:00 EST 1977

OSTI ID:6709726

Merchant, D D; Killpatrick, D H

An electrode capable of withstanding high temperatures and suitable for use as a current collector in the channel of a magnetohydrodynamic (MHD) generator consists of a sintered powdered metal base portion, the upper surface of the base being coated with a first layer of nickel aluminide, an intermediate layer of a mixture of nickel aluminide-refractory ceramic on the first layer and a third or outer layer of a refractory ceramic material on the intermediate layer. The sintered powdered metal base resists spalling by the ceramic coatings and permits greater electrode compliance to thermal shock. The density of the powdered metal base can be varied to allow optimization of the thermal conductivity of the electrode and prevent excess heat loss from the channel.

• Assignee: Dept. of Energy
• Patent Number(s): None
• OSTI ID: 6709726
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300103* -- MHD Generators-- Materials
Components
& Auxiliaries
ALLOYS
ALUMINIUM ALLOYS
CERAMICS
COATINGS
DESIGN
DIRECT ENERGY CONVERTERS
ELECTRODES
EROSION
FABRICATION
INTERMETALLIC COMPOUNDS
MHD CHANNELS
MHD GENERATORS
NICKEL ALLOYS
PERFORMANCE
PHYSICAL PROPERTIES
REFRACTORIES
SINTERED MATERIALS
SINTERING
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES