Development, characterization and evaluation of materials for open cycle MHD. Quarterly report for the period ending September 1979
The development of hafnium-rare earth oxides, with demonstrated potential for MHD hot electrode, continues at a high level. Procedures for fabricating high density ceramic compacts with uniform microstructures at temperatures below 1875K for three compositions have been developed. Bars of these materials are being fabricated for testing in the Westinghouse WESTF facility. Yttrium chromites, which have also shown potential for hot electrodes, are being fabricated into test bars by a commercial supplier. These materials are being prepared for testing in WESTF. The required electrical conductivity and thermal conductivity have been, and are being, measured for these electrode materials. The RFG air preheater refractory, tested in Montana State University's heat exchangers (Core number 1) has been characterized and evaluated. The potential mechanism for corrosive attack by the molten slag have been identified.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (USA)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 5300980
- Report Number(s):
- PNL-2004-12
- Country of Publication:
- United States
- Language:
- English
Similar Records
MHD electrode development. Quarterly report, January-March 31, 1979
Development of materials for open-cycle MHD. Quarterly report ending December 1982
Related Subjects
300103* -- MHD Generators-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
AIR HEATERS
CERAMICS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COAL-FIRED MHD GENERATORS
CORROSION
CORROSIVE EFFECTS
CRYSTAL STRUCTURE
DATA
DATA FORMS
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRICAL PROPERTIES
ELECTRODES
EQUIPMENT
FABRICATION
GRAPHS
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
HEATERS
INFORMATION
MATERIALS
MATERIALS TESTING
MHD GENERATORS
MICROSTRUCTURE
OPEN-CYCLE MHD GENERATORS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
RARE EARTH COMPOUNDS
REFRACTORIES
SINTERING
SLAGS
TABLES
TESTING
THERMAL CONDUCTIVITY
THERMAL DIFFUSIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES