Rotatable anode target for x-ray tube, x-ray tube, and x-ray inspection apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
InventorShinichi YAMAMOTO
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Abstract
A rotatable anode target for an X-ray tube (1) of the present invention includes a metallic disc (2) which includes a first crystal structure; a metallic cylinder (3) which is joined with the metallic disc and includes a second crystal structure, where a first average aspect ratio of first crystal grains positioning at a first region within 2 mm from a interface between the metallic disc and the metallic cylinder is less than 2, and a second average aspect ratio of second crystal grains positioning at a second region within 2 mm from the interface is 2 or more and 8 or less. It is thereby possible to provide an X-ray tube target which has high heat release performance and where thermal deformation is difficult to occur.
Claims15
A rotatable anode target for an X-ray tube, comprising:
- a metallic disc including a first crystal structure;
- a metallic cylinder joined with the disc and including a second crystal structure;
- and
- an X-ray irradiator disposed on the disc,
- wherein the first crystal structure contains a plurality of first crystal grains in a first region within 2 mm from an interface between the disc and the cylinder, and the second crystal structure contains a plurality of second crystal grains in a second region within 2 mm from the interface,
- wherein a first average aspect ratio of the first crystal grains is less than 2, and a second average aspect ratio of the second crystal grains is 2 or more and 8 or less.
Dependencies are inferred from the claim text.