Amalgam having extended stable mercury vapor pressure range and

Details Amalgam having extended stable mercury vapor pressure range and Amalgam having extended stable mercury vapor pressure range and

1989-02-01

1990-11-20

Yusko, Donald J.

Electric lamp and discharge devices

Having vapor generating material

Mercury vapor material

313450, 313550, H01J 1726

Patent

active

049721186

ABSTRACT:
An amalgam has a base metal including bismuth in an amount selected from the range between about 45 wt % and 65 wt %, and lead in an amount selected from the range between about 35 wt % and 55 wt %. The amalgam also includes mercury the amount of which is selected from the range between about 1 wt % and 12 wt % of the total amount of the amalgam. Such amalgam is sealed in a low mercury vapor pressure discharge lamp which operates at a medium bulb surface temperature to achieve a stable mercury vapor pressure over an extended amalgam temperature range.

REFERENCES:
patent: 3227907 (1966-01-01), Bernier et al.
patent: 4105910 (1978-08-01), Evans
patent: 4393325 (1983-07-01), van der Kooi
patent: 4615846 (1986-10-01), Yoshino et al.
patent: 4636686 (1987-01-01), Vrieze

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