Fletcher Yoder
Composite electrode materials for electric lamps and methods of manufacture thereof
An electron emissive composition comprises a barium tantalate composition in an amount of about 50 to about 95 wt %; and a ferroelectric oxide composition in an amount of about 5 to about 50 wt %, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition in an amount of about 50 to about 95 wt % with a ferroelectric oxide composition in an amount of about 5 to about 50 wt % to form an electron emissive precursor composition, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition; and sintering the composition at a temperature of about 1000° C. to about 1700° C.
General Electric Company
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Alok M. William Winder Gopi Chandran Mukunda Srinivas Shankar Madras Vikas Holly Ann
Srivastava Beers Ramachandran Adyam Venugopal Midha Comanzo