Method of producing frit-sealed x-ray tube

Details Method of producing frit-sealed x-ray tube Method of producing frit-sealed x-ray tube

1994-05-31

1996-05-07

Porta, David P.

X-ray or gamma ray systems or devices

Source

Electron tube

378140, H01J 3502

Patent

active

055154123

ABSTRACT:
A frit-sealed x-ray tube includes a glass bulb that supports metallic parts including an anode with a target and a beryllium window. Joint materials are provided of metal with thermal expansion coefficients that approximate the thermal expansion coefficient of the glass bulb. Frit materials having compositions of primarily zinc oxide and lead oxide are used and also have a thermal expansion coefficient that approximates the thermal expansion coefficients of the glass bulb and the joint materials. The frit materials allow a heat resistant and vacuum resistant welding between the glass bulb and the joint materials.

REFERENCES:
patent: 2029584 (1936-02-01), Pieper
patent: 2431277 (1947-11-01), Pressel et al.
patent: 2564950 (1951-08-01), Black
patent: 3500097 (1970-03-01), Perry et al.
patent: 3553514 (1971-01-01), Berends
patent: 3884007 (1975-05-01), Thoman
patent: 4208577 (1980-06-01), Wang
patent: 4861977 (1989-08-01), de la Fonteijne

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