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U.S. Department of Energy
Office of Scientific and Technical Information

Electrode material for fluorescent lamps

Patent ·
OSTI ID:1531443

There is provided an emissive mixture for cathodes of fluorescent lamps comprising a ceramic material having a formula (A1-x Cax)6 (Ta1-y Wy)2 O11+y, where A is barium or a combination of barium and strontium, 0≦x<0.5, 0≦y<1, and one of x or y is greater than zero. The ratio of lamp efficacy to number of lamp starts may be improved by optimizing the amount of Ca and W present in the ceramic material.

Research Organization:
General Electric Company, Schenectady, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC36-97GO10236
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
6,384,534
Application Number:
09/466,009
OSTI ID:
1531443
Country of Publication:
United States
Language:
English

References (1)

Thermal Model of the Fluorescent Lamp Electrode journal July 1989