MHD electrode development. Quarterly report, January-March 31, 1979

Technical Report · Tue May 01 00:00:00 EDT 1979

DOI:https://doi.org/10.2172/5434798· OSTI ID:5434798

Sadler, J. W.; Bein, J.; Black, D. L.

Zirconia based electrode compositions have been selected for inclusion in the up-coming non-slagging super-hot WESTF Test 42. Fabrication and processing details for these materials are presented. The hafnia based materials to be included in this test have not yet been identified by Battelle Northwest Laboratory. Results of slag compatibility tests for a number of candidate ceramic insulating materials are presented. These test results have been used to rank these materials as candidates for use under the slagging hot or non-slagging super-hot operating modes. Laboratory screening tests, including electrochemical and anode arc erosion tests, have continued. A comprehensive analytical model has been derived which permits detailed analysis of the role of slag properties as well as electrode-slag polarization on the nature of electrochemical reactions under hot slagging conditions. Anode arc erosion tests have been extended to provide preliminary data on the effect of potassium carbonate/slag versus potassium sulfate/slag mixtures on the arc erosion of copper and platinum clad copper anode samples. The results indicate increased arc damage for the sulfate/slag mixture. Test planning and detail experiment design activities have continued in support of the upcoming WESTF tests. Parametric analyses were completed to define electrode and insulator material coupons for WESTF Test 42/44, non-slagging super-hot operating mode; design activities in support of WESTF Test 43, Pt-Fe, were similarly completed.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (USA). Advanced Energy Systems Div.
• DOE Contract Number: AC01-79ET15529
• OSTI ID: 5434798
• Report Number(s): FE-15529-2
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300103* -- MHD Generators-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ANODES
CARBON COMPOUNDS
CARBONATES
CERAMICS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL-FIRED MHD GENERATORS
COMPATIBILITY
COPPER
CORROSION
CURRENTS
DATA
DATA FORMS
DIRECT ENERGY CONVERTERS
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTROCHEMICAL CORROSION
ELECTRODES
ELECTRON MICROSCOPY
ELEMENTS
EQUIPMENT
EROSION
EXPERIMENT PLANNING
FABRICATION
GRAPHS
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
INFORMATION
MATERIALS
MATERIALS TESTING
MATHEMATICAL MODELS
METALS
MHD CHANNELS
MHD GENERATORS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PARAMETRIC ANALYSIS
PHYSICAL PROPERTIES
PLANNING
POROSITY
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
POTASSIUM SULFATES
RESEARCH PROGRAMS
SCANNING ELECTRON MICROSCOPY
SCREENING
SEED-SLAG INTERACTIONS
SLAGS
SULFATES
SULFUR COMPOUNDS
TEST FACILITIES
TESTING
THERMAL ANALYSIS
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES