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Title: Ceramic component for electrodes

Abstract

A ceramic component suitable for preparing MHD generator electrodes consists of HfO.sub.2 and sufficient Tb.sub.4 O.sub.7 to stabilize at least 60 volume percent of the HfO.sub.2 into the cubic structure. The ceramic component may also contain a small amount of PrO.sub.2, Yb.sub.2 O.sub.3 or a mixture of both to improve stability and electronic conductivity of the electrode. The component is highly resistant to corrosion by molten potassium seed and molten coal slag in the MHD fluid and exhibits both ionic and electronic conductivity.

Inventors:
 [1]
  1. Richland, WA
Issue Date:
Research Org.:
Battelle Memorial Institute, Columbus, OH (United States)
OSTI Identifier:
863474
Patent Number(s):
4180484
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ceramic; component; electrodes; suitable; preparing; mhd; generator; consists; hfo; sufficient; tb; stabilize; 60; volume; percent; cubic; structure; contain; amount; mixture; improve; stability; electronic; conductivity; electrode; highly; resistant; corrosion; molten; potassium; seed; coal; slag; fluid; exhibits; ionic; potassium seed; ceramic component; volume percent; mhd generator; electronic conductivity; molten potassium; mhd fluid; cubic structure; component suitable; highly resistant; generator electrodes; preparing mhd; /252/310/501/

Citation Formats

Marchant, David D. Ceramic component for electrodes. United States: N. p., 1979. Web.
Marchant, David D. Ceramic component for electrodes. United States.
Marchant, David D. Mon . "Ceramic component for electrodes". United States. https://www.osti.gov/servlets/purl/863474.
@article{osti_863474,
title = {Ceramic component for electrodes},
author = {Marchant, David D},
abstractNote = {A ceramic component suitable for preparing MHD generator electrodes consists of HfO.sub.2 and sufficient Tb.sub.4 O.sub.7 to stabilize at least 60 volume percent of the HfO.sub.2 into the cubic structure. The ceramic component may also contain a small amount of PrO.sub.2, Yb.sub.2 O.sub.3 or a mixture of both to improve stability and electronic conductivity of the electrode. The component is highly resistant to corrosion by molten potassium seed and molten coal slag in the MHD fluid and exhibits both ionic and electronic conductivity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

Patent:

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