• DocumentCode
    626127
  • Title

    Impregnation of High purity Ba-Ca aluminate on a porous tungsten matrix obtained from W-Cu composite for TWT thermionic cathodes

  • Author

    Sene, Frank F. ; Mancini, Victor A. ; Santos, Vinicius O. ; Motta, Claudio C.

  • Author_Institution
    Nucl. & Energy Res. Inst., São Paulo, Brazil
  • fYear
    2013
  • fDate
    21-23 May 2013
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    Impregnated thermionic cathodes production was the main objective of this work. The W-30wt.%Cu composite was sintered by induction heating (1200°C). The porous matrix was obtained after decopperization (1600°C). High purity Ba-Ca aluminate was impregnated (1630°C). The amount of aluminate impregnated was 18.32wt.%. Microstructure, porosity, and particle sizes distribution were determined.
  • Keywords
    particle size; porosity; porous materials; thermionic cathodes; travelling wave tubes; TWT thermionic cathodes; decopperization; high purity Ba-Ca aluminate; impregnated thermionic cathodes production; particle sizes distribution; porosity; porous tungsten matrix; temperature 1200 degC; temperature 1600 degC; temperature 1630 degC; Barium; Calcium; Cathodes; Copper; Milling; Powders; Tungsten; Induction heating; barium calcium aluminate; thermionic cathode; tungsten-copper composite;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International
  • Conference_Location
    Paris
  • Print_ISBN
    978-1-4673-5976-4
  • Type

    conf

  • DOI
    10.1109/IVEC.2013.6571126
  • Filename
    6571126
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=626127