Method of manufacturing grid electrodes for electron tubes

Details Method of manufacturing grid electrodes for electron tubes Method of manufacturing grid electrodes for electron tubes

D - Textiles, Paper

01

F

18/1

D01F 9/12 (2006.01) C23C 16/26 (2006.01) H01J 19/00 (2006.01)

Patent

CA 1083310

ABSTRACT Grid electrodes having improved mechanical and electrical properties are obtained and the reject per centages during the manufacture are reduced when a) a hollow body (grid sleeve) is manufactured according to the hot-gas pyrolysis method; b) the finished grid is provided, by means of hot gas pyrolysis, with a second layer of highly oriented pyrolytic graphite; c) polished substrate cores, in particular of glassy carbon, which are as smooth as possible are used d) a thermal or thermal mechanical after-treat- me?? (at 3000 to 3800°K and 10-500 bar) is carried out, and e) for the further processing of the grid sleeve to the grid electrode the cutting by means of laser beams is preferably used.

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