Abstract
Characterization was performed on samples representing scandate cathodes at key stages of processing. This included the starting powders, sintered pellets, impregnated pellets and activated cathodes, with special emphasis on the impregnated state. It was observed that pores were occupied by scandia after the pressing and sintering stage, and were subsequently completely filled after the impregnation stage. Interestingly, streaks of scandium-containing phases were observed in the impregnated sample. Activated cathodes did not exhibit the expected morphology with highly faceted tungsten, which may be due to a high oxygen content that originated from the powder preparation process.
Original language | English |
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Title of host publication | 2018 IEEE International Vacuum Electronics Conference, IVEC 2018 |
Pages | 233-234 |
Number of pages | 2 |
ISBN (Electronic) | 9781538604540 |
DOIs | |
State | Published - Jun 20 2018 |
Event | 19th IEEE International Vacuum Electronics Conference, IVEC 2018 - Monterey, United States Duration: Apr 23 2018 → Apr 26 2018 |
Publication series
Name | 2018 IEEE International Vacuum Electronics Conference, IVEC 2018 |
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Conference
Conference | 19th IEEE International Vacuum Electronics Conference, IVEC 2018 |
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Country/Territory | United States |
City | Monterey |
Period | 4/23/18 → 4/26/18 |
Bibliographical note
Publisher Copyright:© 2018 IEEE.
Keywords
- oxygen
- processing
- scandate cathode
- scandia
- surface energy
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Instrumentation