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:
-
- 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):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES
- 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}
}
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