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Title: Magnetohydrodynamic electrode

Abstract

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.

Inventors:
 [1];  [2]
  1. (Richland, WA)
  2. (Orland Park, IL)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
863106
Patent Number(s):
US 4093879
Assignee:
United States of America as represented by United States (Washington, DC) ANL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Marchant, David D., and Killpatrick, Don H. Magnetohydrodynamic electrode. United States: N. p., 1978. Web.
Marchant, David D., & Killpatrick, Don H. Magnetohydrodynamic electrode. United States.
Marchant, David D., and Killpatrick, Don H. Sun . "Magnetohydrodynamic electrode". United States. https://www.osti.gov/servlets/purl/863106.
@article{osti_863106,
title = {Magnetohydrodynamic electrode},
author = {Marchant, David D. and Killpatrick, Don H.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

Patent:

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