Development of materials for open-cycle MHD. Quarterly report for the period ending June 1983
Pacific Northwest Laboratory (PNL) is conducting an ongoing study of channel components for open-cycle, coal-fired magnetohydrodynamic (MHD) generators. Specifically, electrodes and insulators are being developed. The electrical conductivity has been measured on several compositions based on hafnium oxide, rare earth oxides, and indium oxide and on In/sub 2/O/sub 3/-SnO/sub 2/ compositions. Indium oxide at present appears to be the main constituent required for high conductivity. In the indium oxide-rare earth oxides-hafnium oxide compositions, the indium forms compounds with the other elements and is present in samples as individual grains and not as a contaminant along the grain boundary. In the In/sub 2/O/sub 3/-SnO/sub 2/ compositions, adding SnO/sub 2/ to In/sub 2/O/sub 3/ produces compositions with higher conductivity than pure In/sub 2/O/sub 3/.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5454536
- Report Number(s):
- PNL-4001-4; ON: DE84003855
- Country of Publication:
- United States
- Language:
- English
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360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
CHALCOGENIDES
COAL-FIRED MHD GENERATORS
DIRECT ENERGY CONVERTERS
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRICAL PROPERTIES
ELECTRODES
EQUIPMENT
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
INDIUM COMPOUNDS
INDIUM OXIDES
MATERIALS
MHD CHANNELS
MHD GENERATORS
MIXTURES
OPEN-CYCLE MHD GENERATORS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
TIN COMPOUNDS
TIN OXIDES
TRANSITION ELEMENT COMPOUNDS