Thermion emitting oxide cathode and method for making the same

Details Thermion emitting oxide cathode and method for making the same Thermion emitting oxide cathode and method for making the same

1995-12-08

1997-11-04

O'Shea, Sandra L.

Electric lamp and discharge devices

Electrode and shield structures

Cathodes containing and/or coated with electron emissive...

313270, 313346DC, H01J 114

Patent

active

056843577

ABSTRACT:
A thermion emitting oxide cathode comprising a metal cap and a cathode sleeve, the metal cap being coated with a thermion emitting material layer containing a barium-based alkaline earth metal, wherein the thermion emitting material layer is made of a titanate of the barium-based alkaline earth metal. The thermion emitting oxide cathode is made by mixing a titanium tetrachloride (TiCl.sub.4) with an aqueous solution of mixture into an oxalate solution of 80.degree. C., thereby precipitating a O.sub.4).sub.2.4H.sub.2 O!, and treating the precipitated barium-strontium-calcium titanate hydrate at a temperature of 500.degree. to 700.degree. C. to remove a plurality of water molecules, thereby producing a suspension of barium-strontium-calcium titanate

REFERENCES:
patent: 2866915 (1958-12-01), Fang
patent: 4924137 (1990-05-01), Watanabe et al.
patent: 5118984 (1992-06-01), Saito et al.
Kudaka et al., "Some Observation on the Aggregate Particles Produced During Pyrolysis of PTC Barium Titanate Precursor Synthesized by the Oxalate Method", Journal of the Ceramic Society of Japan, vol. 102, No. 5, May 1994 Tokyo.

Affiliated with

Also associated with

Rating

Thermion emitting oxide cathode and method for making the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermion emitting oxide cathode and method for making the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermion emitting oxide cathode and method for making the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1835506