Title: Composite electrode materials for electric lamps and methods of manufacture thereof
Application Number: 200410046481 Application Date: 2004.05.31
Publication Number: 1574153 Publication Date: 2005.02.02
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01J1/14,H01J1/144,H01J9/02,H01J61/06
Applicant(s) Name: Gen Electric Address:
Inventor(s) Name: Venugopal Shankar Mandras, Srivastava Alok M., Com
Attorney & Agent: su juan
Abstract:
     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 DEG C. to about 1700 DEG C.
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