Magnetohydrodynamic electrode

Patent · Sun Jan 01 04:00:00 EST 1978

OSTI ID:863106

Marchant, David D ^[1]; Killpatrick, Don H ^[2]

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1. Richland, WA
2. Orland Park, IL

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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4093879
• OSTI ID: 863106
• Country of Publication: United States
• Language: English

Related Subjects

/310/252/
allow
aluminide
base
base portion
capable
ceramic
ceramic coating
ceramic coatings
ceramic mater
ceramic material
channel
coated
coatings
collector
compliance
conductivity
consists
current
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density
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excess
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magnetohydrodynamic
magnetohydrodynamic electrode
material
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mhd
mixture
nickel
nickel aluminide
optimization
outer
outer layer
permits
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prevent
prevent excess
refractory
refractory ceramic
resists
shock
sintered
spalling
suitable
surface
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thermal
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thermal shock
third
upper
upper surface
varied
withstanding