Electron gun cathode, for a CRT, has a fine grained recrystallized metal layer between a metal base and a barium-containing alkaline earth metal oxide electron emission layer

摘要

Electron gun cathode comprises a fine grained recrystallized metal layer between a metal base and a barium-containing alkaline earth metal oxide electron emission layer. An electron gun cathode consists of a nickel base containing a reducing component, a metal layer formed by fine granulation and heating of the surface of the base to effect recrystallization, and an electron emission layer containing an alkaline earth metal oxide and barium formed on the metal layer.