IMPREGNATED CATHODE BODY STRUCTURE AND MANUFACTURE THEREOF

摘要

PURPOSE:To provide an impregated cathode body structure of stable quality and its manufacture such that a failure in heater withstand strength is prevented while faults such as cracking of a cathode sleeve during assembly are prevented. CONSTITUTION:A method for manufacturing an impregnated cathode body structure comprises fixing at one end of a cathode sleeve 5 a cathode base 1 impregnated with an electron emitting material, the cathode sleeve 5 having a heater 11 installed therein; applying to the inner surface of the cathode sleeve a slurry comprising titania powder having butyl acetate and nitrocellulose mixed therein; and forming a black sintered layer by means of baking of the slurry in a reducing atmosphere after drying.