Thermionic Properties of Some Refractory Metal Carbides
Journal Article
·
· Journal of Applied Physics
The low-field thermionic emission properties of vacuum hot-pressed samples of MoC, Ta0.8.Zr0.2C, TiC HfC, TaC, and ZrC in polycrystalline bulk form were measured over the temperature range 1300 to 1900 deg K. The samples were well characterized by metallographic examinations and x-ray diffraction analyses. A correlation between microstructure and thermionic emission was observed. The MoC sample was found to be the most copious electron emitter, while the ZrC sample, which was carbon deficient, had the smallest electron emission over the temperature range investigated.
- Research Organization:
- General Electric Co., Pleasanton, Calif.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-037532
- OSTI ID:
- 4844142
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 7 Vol. 34; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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