Title :
Development of an Invar (Fe-36Ni) shadow mask for color cathode ray tubes
Author :
Inaba, Michihiko ; Teshima, Kosuke ; Higashinakagawa, Emiko ; Ohtake, Yasuhisa
Author_Institution :
Toshiba Res. & Dev. Center, Kanagawa, Japan
fDate :
10/1/1988 12:00:00 AM
Abstract :
An Invar shadow mask was developed for color television tubes. Crystal faces on the rolled material surface are concentrically (100), from which high-quality flat masks are obtained by etching with FeCl3 solution with a high concentration. Warm forming of the material, at a temperature above 343 K, provides a mask free from springback. Oxidation of the material is possible by heating to a temperature of 873 K
Keywords :
colour television picture tubes; electron tube manufacture; etching; forming processes; iron alloys; nickel alloys; oxidation; 343 to 873 K; CRT; Fe-Ni; FeCl3 solution; Invar; TV tubes; color cathode ray tubes; color television tubes; etching; rolled material surface; shadow mask; warm forming oxidation; Annealing; Building materials; Cathode ray tubes; Crystalline materials; Etching; Grain size; Oxidation; Springs; Steel; Temperature;
Journal_Title :
Electron Devices, IEEE Transactions on
