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In this study, tungsten-rhenium (Re-W) dispenser cathodes are fabricated by cold-pressing and sintering of Re-W powder which was prepared by spray drying method followed by two-step hydrogen reduction. Emission performance of the cathodes was tested on a planar diode configuration. The elements distribution of rhenium and tungsten on the surface of 75at%Re-W cathode were also investigated by EPMA. Among the cathodes fabricated in different compositions, the 75at% Re-W cathode demonstrates the highest zero field emission current density of 14.03 A cm-2 at 1000 °C. © 2015 IEEE.
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Proceedings of 2015 IEEE International Vacuum Electronics Conference, IVEC 2015
Year： 2015
Language： English
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WoS CC Cited Count： 0
SCOPUS Cited Count： 3
ESI Highly Cited Papers on the List： 0 Unfold All
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30 Days PV： 2
