Method for the fabrication of an impregnated cathode and cathode

Details Method for the fabrication of an impregnated cathode and cathode Method for the fabrication of an impregnated cathode and cathode

1988-12-21

1990-03-20

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

427 77, 4271264, 427230, 4283073, 4283077, 4285395, 428699, 445 51, H01J 904, C25B 1110, B32B 1500, B32B 1800

Patent

active

049100793

ABSTRACT:
Disclosed are a method for the fabrication of an impregnated cathode and a cathode obtained thereby. The impregnation is obtained by applying a sol-gel method. The emissive material which impregnates the body of the cathode only partially fills the pores. This facilitates the migration of the material towards the surface and increases the lifetime of the cathode.

REFERENCES:
patent: 3458913 (1969-08-01), Schmidt
patent: 4668531 (1987-05-01), Asano et al.
patent: 4836816 (1989-06-01), Bouchard et al.
Powder Metallurgy International, vol. 18, No. 3, 1986, pp. 164-168; J. C. Bernier.
Revue Technique Thomson-CSF, vol. 14, No. 3, Sep. 1982, pp. 583-655; A. M. Shroff.

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