Damage of metal surfaces by a hot, dense deuterium plasma [electronic resource].
- New York, N.Y. : Columbia University, 1978.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 96 : digital, PDF file
- Additional Creators:
- Columbia University
United States. Department of Energy. Office of Scientific and Technical Information
- The effect of differences in alloy chemistry and systematic changes in microstructural interface density on the occurrence of unipolar arcing was studied. The effect of thermionic emission is examined by comparing the refractory metals W, Nb, and Nb-751 alloy to the non-refractory stainless steels, AISI 304, 316 and Nimonic PE-16. The effect of alloying additions is examined by comparing Mo containing 316 and Mo free 304 stainless steels as well as Zr containing Nb-751 and Zr free Nb. The effect of interface density is examined by systematically varying the density of microstructural interfaces in AISI 4130, a ferritic steel. Although most of the metals and alloys studied are candidate fusion reactor materials, 4130 was chosen on the basis of our ability to modify the density of microstructural interfaces in the material by heat treatment. The results are discussed with respect to available unipolar arcing theory. The significance of the work, in terms of actual power reactors is assessed and the need for further work defined.
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