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Volume 9 Issue 4
Jul.  1987
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Wu Zhaohao. STUDY ON THE ROLE OF CALCIUM OXIDE AND SCANDIUM OXIDE IN THE IMPREGNATED BARIUM ALUMINATE CATHODE[J]. Journal of Electronics & Information Technology, 1987, 9(4): 348-358.
Citation: Wu Zhaohao. STUDY ON THE ROLE OF CALCIUM OXIDE AND SCANDIUM OXIDE IN THE IMPREGNATED BARIUM ALUMINATE CATHODE[J]. Journal of Electronics & Information Technology, 1987, 9(4): 348-358.

STUDY ON THE ROLE OF CALCIUM OXIDE AND SCANDIUM OXIDE IN THE IMPREGNATED BARIUM ALUMINATE CATHODE

  • Received Date: 1985-12-02
  • Rev Recd Date: 1987-03-17
  • Publish Date: 1987-07-19
  • The role of calcium oxide in the barium aluminate and that of calcium oxide and scandium oxide both doped in the impregnated barium aluminate cathode are analytically studied. The results indicate that there are common consitituents, i.e. 2BaO CaO Al2O3 and utilizable barium oxide in the emission substances of various impregnated barium-calcium-aluminate cathodes. The calcium oxide in the barium aluminates participates in constituting 2BaOCaOAl2O3. It makes the utilizable barium oxide stable. The scandium oxide doped in the barium-calcium-aluminate 5BaO3CaO2Al2O30.6Sc2O3 compound is supposed to be a carrier for aarium oxide or barium atom which is the electron source, and it plays the role in controlling and roplonishing the electron source. The proposed mechanism has been proved by some experimental data.
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