Anti-fretting coating for rotor attachment joint and method of making same
AssigneeGeneral Electric Company
InventorsIan Strider Hunt, Andrew Thomas Triscari
Life of this patent
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Abstract
An x-ray tube includes a cathode adapted to emit electrons, a bearing assembly comprising a rotatable shaft having a rotor hub, a target assembly attached to the rotatable shaft and positioned to receive the emitted electrons in order to generate x-rays therefrom, a rotor attached to the rotor hub at an attachment face, wherein the attachment face comprises a first material compressed against a second material, and a first anti-wear coating attached to one of the first material and the second material and positioned between the first material and the second material.
Claims19
An x-ray tube comprising:
- a cathode adapted to emit electrons;
- a bearing assembly comprising a rotatable shaft having a rotor hub;
- a target assembly attached to the rotatable shaft and positioned to receive the emitted electrons in order to generate x-rays therefrom;
- a rotor attached to the rotor hub at an attachment face, wherein the attachment face comprises a first material compressed against a second material;
- and
- a first anti-wear coating attached to one of the first material and the second material and positioned between the first material and the second material.
A method of fabricating an anode assembly for an x-ray tube comprising:
- applying a first anti-wear coating to one of a first material and a second material;
- and
- attaching a rotor to a rotor hub that is affixed to a rotatable bearing shaft, the rotor being attached to the rotor hub at an interface that is comprised of the first material and the second material, wherein the rotor comprises the first material and the rotor hub comprises the second material.
An x-ray imaging system comprising:
- a gantry;
- a detector attached to the gantry;
- and
- an x-ray tube attached to the gantry, the x-ray tube comprising:
- a bearing assembly having a bearing hub, a rotatable bearing shaft and a rotor hub attached to the rotatable bearing shaft;
- an x-ray target attached to the rotatable bearing shaft by way of the bearing hub;
- a rotor attached to the rotatable bearing shaft by way of the rotor hub, the rotor being joined to the rotor hub at a contact location;
- and
- a first anti-fretting coating;
- wherein the contact location comprises a first material attached to a second material, and wherein the first anti-fretting coating is attached to one of the first material and the second material at the contact location and is positioned between the first material and the second material.
Dependencies are inferred from the claim text.