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    • 1. 发明授权
    • Method for enhancing thermal radiation transfer in X-ray tube components
    • 增强X射线管部件热辐射传递的方法
    • US06390875B1
    • 2002-05-21
    • US09535019
    • 2000-03-24
    • John M. WarrenMichael PriceMartin W. Plutowski
    • John M. WarrenMichael PriceMartin W. Plutowski
    • H01J3510
    • H01J35/04H01J2235/10H01J2235/12H01J2235/1237
    • A method is provided for enhancing heat transfer within an X-ray vacuum tube, from a hot component such as the rotating anode assembly to a cooler component such as the metal tube housing, by increasing surface emissivity of respective components. The method comprises the steps of fabricating each component from an alloy containing a specified minimum amount of chromium, and then implementing a first heating operation, wherein a fabricated component is heated in a dry hydrogen atmosphere for a first specified time period. Thereafter, a second heating operation is implemented, wherein the fabricated component is heated in a wet hydrogen atmosphere for a second specified time period. This procedure forms a refractory chromium oxide coating on the component that exhibits high absorption in the NIR region of the electromagnetic spectrum.
    • 提供了一种通过增加各个部件的表面发射率来增强X射线真空管内的热传递的方法,从诸如旋转阳极组件的热部件到诸如金属管壳体的较冷部件。 该方法包括以下步骤:从含有规定的最小量的铬的合金制造每个组分,然后实施第一加热操作,其中将制造的组分在干燥氢气氛中加热第一特定时间段。 此后,实施第二加热操作,其中制造的部件在湿氢气氛中加热第二特定时间段。 该方法在组分上形成耐火铬氧化物涂层,其在电磁光谱的NIR区域中表现出高吸收。
    • 2. 发明授权
    • Iron oxide coating for x-ray tube rotors
    • 用于x射线管转子的氧化铁涂层
    • US06144720A
    • 2000-11-07
    • US143121
    • 1998-08-28
    • Frank D. DeCouPaul M. XuRobert J. Zielinski
    • Frank D. DeCouPaul M. XuRobert J. Zielinski
    • H01J35/10
    • H01J35/105H01J2235/1033H01J2235/1237
    • A high energy x-ray tube includes an evacuated chamber (12) containing a rotor (34) which rotates an anode (10) in the path of a stream of electrons (A) to generate an x-ray beam (B) and heat. The rotor includes an armature (36) which rotates around a stationary rotor support (40). An emissive coating is formed on the rotor by depositing an iron Fe.sub.3 O.sub.4 oxide plasma onto the surface of the armature. Heat generated in the anode during the production of x-rays is conducted through the anode and the rotor to the emissive coating which irradiates the heat across vacuum, thereby increasing the lifetime of the tube. A stator (32) generates an oscillating magnetic field which induces opposing fields in the Fe.sub.3 O.sub.4 coating to create the rotational forces to rotate the anode.
    • 高能量X射线管包括:真空室(12),其包含使电子(A)的路径中的阳极(10)旋转以产生X射线束(B)的转子(34)和热量 。 转子包括围绕固定转子支撑件(40)旋转的电枢(36)。 通过在电枢的表面上沉积铁Fe 3 O 4氧化物等离子体,在转子上形成发光涂层。 在生产X射线期间在阳极中产生的热量通过阳极和转子传导到发射涂层,其通过真空照射热量,从而增加管的寿命。 定子(32)产生振荡磁场,其在Fe 3 O 4涂层中引起相反的场,以产生旋转力来旋转阳极。
    • 8. 发明授权
    • X-ray tube cooling by emissive heat transfer
    • X射线管通过发射热传导冷却
    • US09177754B2
    • 2015-11-03
    • US13763623
    • 2013-02-09
    • Varian Medical Systems, Inc.
    • Wayne HansenKasey GreenlandTodd Parker
    • H01J35/10H01J35/16H01J35/06
    • H01J35/16H01J35/06H01J2235/1212H01J2235/1237
    • An x-ray tube includes an evacuated envelope, and a cathode assembly and an anode assembly both disposed in the evacuated envelope. The cathode assembly includes a cathode shield, a supporting body disposed inside the cathode shield, and an electron source attached to the supporting body and partially enclosed by the cathode shield. The anode assembly includes a target configured to produce x-rays upon impingement by electrons produced by the electron source. The cathode shield comprises a shield base material and a layer over at least a portion of the base material. The layer comprises an emissivity enhancer having an emissivity greater than the emissivity of the shield base material. The layer may comprise an emissive coating applied on the portion of the base material. Alternatively, the layer may comprise a greened surface formed by a greening process.
    • x射线管包括抽真空的外壳,以及阴极组件和阳极组件,两者都设置在抽真空的外壳中。 阴极组件包括阴极屏蔽件,设置在阴极屏蔽体内部的支撑体,以及附着到支撑体上并被阴极屏蔽部分包围的电子源。 阳极组件包括被配置为在由电子源产生的电子撞击时产生X射线的靶。 阴极屏蔽包括屏蔽基材和至少部分基材的层。 该层包括发射率增强剂,其发射率大于屏蔽基材的发射率。 该层可以包括施加在基材的部分上的发射涂层。 或者,该层可以包括通过绿化工艺形成的绿化表面。