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US 8,509,386 B2Granted
X-ray target and method of making same
AssigneeVarian Medical Systems, Inc.
InventorsDavid S. K. Lee, John E. Postman
Life of this patent
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Abstract
In one example, an x-ray target comprises a target track, a substrate, and an optional backing. The target track includes a base material and a grain growth inhibitor to reduce or prevent microstructure grain growth in the base material. The target track can be included as part of an x-ray tube anode, either of a rotary form or a stationary form.
Claims18
A method for manufacturing an x-ray target, the method comprising:
- combining a base material and a grain growth inhibitor material;
- depositing the combined base material and grain growth inhibitor material onto a substrate;
- and
- processing the combined base material and the grain growth inhibitor material to form a target track material by heat treating the target track material in a vacuum furnace at a temperature of 1,700 degrees Celsius for a period of about four to twelve hours to increase the density of the target track material.
1 more element
A method for manufacturing an x-ray target, the method comprising:
- combining a base material and a grain growth inhibitor material;
- depositing the combined base material and grain growth inhibitor material onto a substrate;
- processing the combined base material and the grain growth inhibitor material to form a target track material;
- and
- affixing a backing to the substrate with a bond layer, the bond layer formed with a braze process by placing a hydride paste containing a braze material between the substrate and the backing.
2 more elements
A method for manufacturing an x-ray target, the method comprising:
- combining a base material and a grain growth inhibitor material;
- depositing the combined base material and grain growth inhibitor material onto a substrate;
- processing the combined base material and the grain growth inhibitor material to form a target track material;
- and
- affixing a backing to the substrate with a bond layer, the bond layer formed with a carbon management layer and wherein the carbon management layer is formed by:
- coating the backing with a carbide forming metal to a predetermined thickness that is sufficient to retard carbon diffusion from the backing;
- and
- processing the coating to form the carbon management layer with a vacuum outgassing process.
5 more elements
Dependencies are inferred from the claim text.