Electrode material for fluorescent lamps
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&lE;x<0.5, 0&lE;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.
General Electric Company
C C C C C H H
C01G C01G C01P C01P C01G H01J H01J
inventional inventional additional additional inventional inventional inventional
Holly Ann Emoke William Winder Laurence Alok Mani Thomas Frederick
Comanzo Abasari Beers Bigio Srivastava Soules