Emissive coating for x-ray tube rotors

Details Emissive coating for x-ray tube rotors Emissive coating for x-ray tube rotors

1994-03-18

1995-10-24

Porta, David P.

X-ray or gamma ray systems or devices

Source

Electron tube

378130, 378131, H01J 3510

Patent

active

054616590

ABSTRACT:
An improved high performance x-ray system having a rotating anode therein which includes an improved coating for the x-ray tube rotor. The surface of the x-ray tube rotor is coated with a ductile coating wherein at least about 40,000 x-ray scan-seconds are accomplished prior to tube failure due to spalling. The coating may be a ductile alloy such as Rene' 80 having a thickness of about 0.2 to about 5.0 mils thick and may be even thicker. The rotor coating has ductile properties with a strain to fail greater than 0.05% and thermal expansion properties which when placed on an x-ray tube rotor, provides at least about 40,000 x-ray scan-seconds prior to tube failure due to rotor spalling.

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patent: 4658414 (1987-04-01), Geldner
patent: 4953190 (1990-08-01), Kukoleck et al.
patent: 5150397 (1992-09-01), Randzaao

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