General Electric Company

David S Lee

Thomas Carson Tiearney, Jr

Kamleshwar Upadhya

A method is used to bond dissimilar metals, such as for an x-ray tube. Copper and steel tubular components are provided. An interlayer material situated between the metal layers is used to bond the copper and steel tubular components by solid state diffusion process. The interlayer material may be pure nickel, pure copper, or a layered combination of nickel and copper or copper alloy. The use of the low cost interlayer material and the solid state diffusion process yields a strong bond between the dissimilar metals.

Method for bonding steel to copper

A Belleville spring/ball combination is utilized in a rotating anode target bearing assembly in an X-ray tube for thermal and electrical conduction as well as self-centering of the target shaft and noise reduction.

Bearing assembly

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.

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Brookfield, WI, United States of America

David S Lee