| Autor: |
J. Lempert, E. L. Kochka, A.B. Turner, L.H. Codoff, B.R. Rossing, W.E. Young, S.J. Schneider, J.W. Sadler, J. A. Kuszyk, J. A. Dilmore |
| Rok vydání: |
1977 |
| Předmět: |
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| DOI: |
10.2172/5224931 |
| Popis: |
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,more » 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.« less |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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