Magnetohydrodynamic electrode

Patent · Sun Jan 01 00:00:00 EST 1978

OSTI ID:863106

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

---

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 (United States)
• 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

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