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Title: Filed emission cathodes for electrodynamic tethers: identifying compatible cathode materials
Authors: Marrese, C.
Polk, J.
Mackie, B.
Quinlan, M.
Koel, B.
Issue Date: 3-Feb-2002
Citation: Space Technology and Applications International Forum
Albuquerque, NM, USA
Abstract: Several material combinations were considered as candidates for the electrodynamic tether application in the investigation discussed in this paper. Critical characteristics like work function, resistance, sputter yield and sensitivity to oxidizing environments were considered. The material investigation included, ZrC/Mo, Mo, MgPt, Pt, NbC/Nb, NbNi/Nb, Nb, RuTa/Ta, Ru/Ta and Ta. The results of the measurements suggest that NbC/Nb, NbNi/Nb, and MgPt are the most promising candidates.
Appears in Collections:JPL TRS 1992+

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