Cathode of electron tube

Cathode of electron tube

  • CN 1,040,263 C
  • Filed: 12/24/1988
  • Issued: 10/14/1998
  • Est. Priority Date: 12/17/1987
  • Status: Active Grant
First Claim
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1. cathod for electric valve, lining has formed cavernous electronic emission material layer on the surface of the parent metal that main component is made up of nickel, this electronic emission material layer is the scandium oxide of 0.1 to 20 weight % is distributed in the alkaline-earth metals oxide of baric at least and forms, it is characterized in that described scandium oxide has layered crystal structure.

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