Emissive electrode for high pressure discharge lamp includes...

Details Emissive electrode for high pressure discharge lamp includes... Emissive electrode for high pressure discharge lamp includes...

H - Electricity

01

J

313/131, 316/22

H01J 61/06 (2006.01) H01J 61/073 (2006.01)

Patent

CA 1053314

ABSTRACT: High-pressure gas discharge lamp having an electrode consisting of a support of a high-melting metal provided with an electron emissive material. The emissive material consists mainly of one or more oxidic compounds containing (a) at least one of the rare earth metal oxides, (b) alkaline earth metal oxide in a quan- tity of 0.66 to 4 mole per mole of rare earth oxide and (c) at least one of the oxides of tungsten and molyb- denum in a quantity of 0.25 to 0.40 mole per mole of alkaline earth metal oxide, the alkaline earth metal oxide consisting for at least 25 mol.% of barium oxide. -19-

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