Characterization of scandate cathode at different stages of processing

Xiaotao Liu, Tyler Maxwell, Qunfei Zhou, Matthew J. Beck, T. John Balk, Bernard Vancil

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

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 languageEnglish
Title of host publication2018 IEEE International Vacuum Electronics Conference, IVEC 2018
Pages233-234
Number of pages2
ISBN (Electronic)9781538604540
DOIs
StatePublished - Jun 20 2018
Event19th IEEE International Vacuum Electronics Conference, IVEC 2018 - Monterey, United States
Duration: Apr 23 2018Apr 26 2018

Publication series

Name2018 IEEE International Vacuum Electronics Conference, IVEC 2018

Conference

Conference19th IEEE International Vacuum Electronics Conference, IVEC 2018
Country/TerritoryUnited States
CityMonterey
Period4/23/184/26/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Keywords

  • oxygen
  • processing
  • scandate cathode
  • scandia
  • surface energy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Instrumentation

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