Method of manufacturing a scandate dispenser cathode and...

Details Method of manufacturing a scandate dispenser cathode and... Method of manufacturing a scandate dispenser cathode and...

H - Electricity

01

J

31/131, 313/187,

H01J 9/04 (2006.01)

Patent

CA 1272876

Abstract: Method of manufacturing a scandate dispenser cathode and scandate dispenser cathode manufactured according to the method. A method of manufacturing a scandate dispenser cathode having a matrix (1) at least the top layer of which consists substantial- ly of a mixture of tungsten with scandium oxide or with a mixed oxide comprising scandium oxide. When sintering of the matrix is carried out at a temperature between 1300 and 1700°C, preferably at approxi- mately 1500°C and in a hydrogen atmosphere, cathodes are obtained having a better recovery after ion bombardment compared with cathodes sintered at 1900°C. Sintering in hydrogen results in a better repro- ducibility.

492219

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