Rotary anode for x-ray tube

Details Rotary anode for x-ray tube Rotary anode for x-ray tube

1993-07-06

1996-04-16

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Having composition, density, or hardness gradient

378144, 428634, 428665, H01J 3510

Patent

active

055081185

ABSTRACT:
A long-life, inexpensive rotary anode for use in an X-ray tube having an X-ray generating layer formed by CVD on a graphite substrate and capable of producing high-power X-rays without the possibility of thermal cracks or delamination. When forming the X-ray generating layer of a tungsten-rhenium alloy on the graphite substrate through a rhenium intermediate layer by CVD, material gases are supplied intermittently so that the entire part or only the surface area of the X-ray generating layer will be formed of laminated structure of ultra-thin films each 0.1-5.0 microns thick. The content of rhenium in the tungsten-rhenium alloy forming the X-ray generating layer has a gradient form, i.e. increases from the interface with the rhenium intermediate layer toward the surface, so that the total amount of rhenium added can be reduced.

REFERENCES:
patent: 3710162 (1973-01-01), Bougle
patent: 3801847 (1974-04-01), Dietz
patent: 5148463 (1992-09-01), Woodruff et al.

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