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The Emitter Envelopes for Power Intensive Thermionic Fuel Elements
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English
Abstract
Progress in development of thermionic fuel elements (TFE) of thermionic nuclear reactor-converters having more than 3 W/cm2 specific electric capacity to the considerable extend is connected with the application of refractory crystal emitters on the base of tungsten and its alloys.
The technology of all single crystal (110) oriented tungsten emitter envelopes was developed at the IPPE. The sample lot of the envelopes was manufactured and then investigated during laboratory and lifetime electrically heated tests. One of the promising direction of this technology progress is the employment of tungsten facetted coating having mainly (110) orientation.
This report is development of [1,2,3]. In the report the investigation results of surface properties of emitter envelope facetted coating as well as results of lifetime tests of TEC with hexahedral geometry W(110) - W(110) electrode envelopes are discussed.
Authors
Citation
Yarygin, V., Vizgalov, A., Skrebova, Z., and Rodichev, I., "The Emitter Envelopes for Power Intensive Thermionic Fuel Elements," SAE Technical Paper 929428, 1992, https://doi.org/10.4271/929428.Also In
References
- Yarygin V.I. Vizgalov A.V. Mironov V.S. Savvov R.V. Sibir E.E. Sidelnikov V.N. Surface Properties of Emitter Envelopes with Monocrystal Tungsten Coating and Their Impact on Thermionic Converter Performance Proceeding of Thermionic Energy Conversion Specialist Conference 105 1989 Eindhoven, The Netherlands
- Vizgalov A.V. Skrebova Z.B. Yarygin V.I. et al. Thermionic Converter With All Single Crystal W(110) - W(110) Electrodes Transactions of Anniversary Specialist Conference on Nuclear Power Engineering in Space 73 Obninsk 1990
- Savvov R.V. Vizgalov A.V. Yarygin Skrebova Z.B. The Performance of W Single Crystal Facetted Coating Surface Having (110) Preference Orientation of TEC Cylindrical Electrodes Abstract of the report on 181 Meeting of The Electrochemical Society 1992 St.Louis, USA