Thermal emissive coating for x-ray targets

Details Thermal emissive coating for x-ray targets Thermal emissive coating for x-ray targets

1989-06-29

1990-08-28

Howell, Janice A.

X-ray or gamma ray systems or devices

Source

Electron tube

378127, 378144, 427421, H01J 3510

Patent

active

049531905

ABSTRACT:
A high thermal emittance coating for an x-ray tube anode target which permits broader application parameters and a stable coating. The coating is composed of Al.sub.2 O.sub.3 present in an amount of 50% to 80% by weight and ZrO.sub.2 or La.sub.2 O.sub.3 and TiO.sub.2 present in an amount of 50% to 20% by weight with the TiO.sub.2 and ZrO.sub.2 or La.sub.2 O.sub.3 being present in a ratio in the range of 1:1 to 10:1. A preferable coating is composed of about 80% by weight of Al.sub.2 O.sub.3 and 20% by weight of TiO.sub.2 and ZrO.sub.2.

REFERENCES:
patent: 3919124 (1975-11-01), Friedel et al.
patent: 3993923 (1976-11-01), Magendans et al.
patent: 4029828 (1977-06-01), Bildstein et al.
patent: 4090103 (1978-05-01), Machenschalk
patent: 4132916 (1979-01-01), Hueschen et al.
patent: 4516255 (1985-05-01), Petter et al.

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