Bonding materials and process for anode target in an x-ray tube
AssigneeGeneral Electric Company
InventorsDavid S. Lee, Thomas C. Tiearney, Jr.
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Abstract
A composite target for an x-ray tube has a graphite substrate portion and a metal portion, the two portions being bonded together by platinum and platinum alloying materials. The preferred alloying materials are tungsten and nickel which act in conjunction with the platinum to improve the bond resulting in an x-ray tube having a longer life span.
Claims10
In a composite structure wherein a refractory metal portion is bonded to a graphite portion with a bonding layer the improvement wherein:
- the bonding layer comprises platinum and a bonding agent selected from the group consisting of tungsten, nickel, molybdenum, vanadium, and titanium.
A composite x-ray tube target comprising:
- a refractory metal portion having a focal track applied to a forward face for producing x-rays;
- a graphite substrate portion;
- and
- a bonding layer joining said graphite substrate portion to said refractory metal portion, said bonding layer comprising platinum and an additional bonding material selected from the group consisting of tungsten, nickel, molybdenum, vanadium, and titanium.
A method of producing an x-ray tube target composed of a refractory metal portion having a focal track thereon and a graphite substrate portion comprising:
- applying platinum and a bonding material between said refractory metal portion and said graphite substrate portion and;
- brazing said platinum and bonding material to form a bonding layer to bond said refractory metal portion to said graphite substrate portion.
Dependencies are inferred from the claim text.