Rhenium tungsten alloy wire for use in a filamentary cathode of

Details Rhenium tungsten alloy wire for use in a filamentary cathode of Rhenium tungsten alloy wire for use in a filamentary cathode of

1996-05-28

1998-01-13

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313341, 313345, 313346R, H01J 1906, H01J 114

Patent

active

057083266

ABSTRACT:
A fluorescent display device including a cathode filament increased in mechanical strength and reduced in end cool. A 26% Re-W filament of 0.64 MG (corresponding to 0.64 mg in weight per 20 cm in length) exhibits an end cool as small as 4.2 mm on each of both sides thereof at a temperature of about 580.degree. C. The end cool in a conventional W filament of the same diameter is increased to about 8 mm. The 26% Re-W filament is increased in mechanical strength by 50% as compared with the conventional W filament.

REFERENCES:
patent: 4117374 (1978-09-01), Witting
patent: 5066885 (1991-11-01), Morimoto et al.
patent: 5192892 (1993-03-01), Aono et al.

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