Development, testing, and evaluation of MHD materials and component designs. Quarterly report, April 1--June 30, 1977

Technical Report · Fri Jul 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/5224931· OSTI ID:5224931

Sadler, J. W.; Young, W. E.; Codoff, L. H.; Dilmore, J. A.; Kochka, E. L.; Kuszyk, J. A.; Lempert, J.; Rossing, B. R.; Schneider, S. J.; Turner, A. B.

Efforts during the April--June 1977 quarter were directed toward the design, fabrication and evaluation of ceramic MHD electrodes for both clean fuel and coal fired environments. The Materials Test Facility (MTF) became operational this quarter following completion of several test runs using a ''dummy'' test section, as well as an initial run on a copper electrode (cold wall) test assembly. These tests verified design prediction of material temperatures and heat fluxes. Both the test facility and test section have demonstrated their suitability as test vehicles for long duration testing of generator materials and designs. A number of designs reflecting various electrode to copper cooling block attachment techniques are being evaluated. These techniques involve the use of a compliant material (metal or organic) to reduce mechanical stresses in the ceramic electrode structures. Laboratory screening tests indicate that both MgCr/sub 2/O/sub 4/ and Mo/sub 2/Si are resistant to slag corrosion and can be seriously considered as anode materials for semi-hot slagging wall operation (T/sub wall/ = 900 to 1500/sup 0/C). MgCr/sub 2/O/sub 4/ is the first oxide tested which has demonstrated promise as a cathode material. Finally, work began on the U--O2 Phase III Module effort. The electrode module has been designed, material property data is being gathered, orders for electrode materials have been placed with several vendors and several electrode designs are under evaluation. Proof tests of several materials and designs will be conducted in the next quarter, followed by a test in the U--O2 facility in February 1978.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (USA). Advanced Energy Systems Div.
• DOE Contract Number: EX-76-C-01-2248
• OSTI ID: 5224931
• Report Number(s): FE-2248-15
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300104* -- MHD Generators-- Duct Engineering & Fluid Dynamics
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
CERAMICS
CHROMATES
CHROMIUM COMPOUNDS
COAL-FIRED MHD GENERATORS
CORROSION RESISTANCE
DESIGN
DIRECT ENERGY CONVERTERS
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRODES
EQUIPMENT
FABRICATION
MAGNESIUM COMPOUNDS
MATERIALS TESTING
MHD CHANNELS
MHD GENERATORS
MOLYBDENUM COMPOUNDS
MOLYBDENUM SILICATES
OXYGEN COMPOUNDS
RESEARCH PROGRAMS
SILICATES
SILICON COMPOUNDS
SLAGS
TEST FACILITIES
TESTING
TRANSITION ELEMENT COMPOUNDS