Hexaboride electron emissive material

Details Hexaboride electron emissive material Hexaboride electron emissive material

1974-09-05

1976-01-13

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

313346R, H01B 106

Patent

active

039323145

ABSTRACT:
An electron emissive material of the formula (Y.sub.1.sub.-x EU.sub.x)B.sub.6 having the calcium hexaboride type crystal structure can easily produce hexaborides of the single phase. These borides have a number of merits such as small work function, high mechanical properties and low vapor pressure, and they are far more excellent than prior-art materials when used in a thermionic emission cathode and a field emission type cold cathode.

REFERENCES:
patent: 3312856 (1967-04-01), Lafferty et al.

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