Cathode for electron emission
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United States of America Patent
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Mar 24, 1981
Grant Date -
N/A
app pub date -
Aug 31, 1978
filing date -
Aug 31, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cathode assembly for electron emission, comprises, a heatable support of high-temperature resistant material, an emitter body of lanthanum hexaboride, and an auxiliary body having a surface contact with both the support and the emitter body, which is made of a third material, comprising a sintered material of the class of carbides, nitrides and borides. The surface contact area between the auxiliary body and the support amounts to at least 1/6 of the surface area of the emitter body.
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