公开(公告)号：US20100040202A1

公开(公告)日：2010-02-18

申请号：US12191990

申请日：2008-08-14

Applicant: David S.K. Lee

Inventor： David S.K. Lee

IPC: H01J35/08

CPC classification number: H01J35/08 ,  H01J35/16 ,  H01J2235/081 ,  H01J2235/084 ,  H01J2235/088 ,  H01J2235/16 ,  H01J2235/165

Abstract: Stationary x-ray target assemblies manufactured using a metal deposition process to form one or more metal layers of the target. In particular, the metal deposition process is used to form an x-ray target metal layer and/or a stress buffer zone on an x-ray target substrate. The stress buffer zone improves material properties of the metals and/or the bonding between the x-ray target metal layer and the substrate. Improved bonding between the x-ray target metal layer and the substrate also improves the heat dissipation properties of the stationary x-ray target assembly.

Abstract translation: 使用金属沉积工艺制造的固定x射线靶组件以形成靶的一个或多个金属层。 特别地，使用金属沉积工艺在x射线靶基底上形成X射线靶金属层和/或应力缓冲区。 应力缓冲区改善金属的材料性质和/或x射线靶金属层与基底之间的结合。 X射线靶金属层和基片之间的改善的结合也改善了固定x射线靶组件的散热性能。

公开(公告)号：US20080101541A1

公开(公告)日：2008-05-01

申请号：US11555532

申请日：2006-11-01

Applicant: Gregory Alan Steinlage ,  Michael Scott Hebert ,  Kirk Alan Rogers ,  Donald Robert Allen

Inventor： Gregory Alan Steinlage ,  Michael Scott Hebert ,  Kirk Alan Rogers ,  Donald Robert Allen

IPC: H01J35/08

CPC classification number: H01J35/108 ,  H01J2235/084

Abstract: In some embodiments, an X-ray target is produced by the method of: stacking a primary substrate layer and a focal track layer, the primary substrate layer being formed of primary substrate material, the focal track layer being formed of emitting material; and bonding the emitting material to the primary substrate material by heating a primary compacted interface to an elevated temperature while maintaining the elevated pressure for a time period to form a primary bonded interface of the emitting material and the primary substrate material. In some embodiments, an X-ray target includes a focal track layer of emitting material, a primary substrate layer bonded to the focal track in a primary bonded interface, and a secondary substrate layer bonded to the primary substrate material in a secondary bonded interface by one of diffusion bonding, diffusion brazing and brazing.

Abstract translation: 在一些实施例中，通过以下方法产生X射线靶：主基底层和聚焦轨迹层，主基底层由初级基底材料形成，焦点轨迹层由发射材料形成; 以及通过将初级压实界面加热至升高的温度并将所述升高的压力保持一段时间以形成所述发射材料和所述主要基底材料的主键合界面，将所述发射材料粘结到所述主基底材料。 在一些实施例中，X射线靶包括发射材料的焦点轨道层，在主键合界面中结合到焦点轨迹的主基底层，以及在二次键合界面中与主基底材料结合的次基底层 扩散接合，扩散钎焊和钎焊之一。

公开(公告)号：US07359487B1

公开(公告)日：2008-04-15

申请号：US11228685

申请日：2005-09-15

Applicant: Bruce Newcome

Inventor： Bruce Newcome

IPC: H01J35/08

CPC classification number: H01J35/08 ,  H01J2235/081 ,  H01J2235/084 ,  H01J2235/085 ,  H01J2235/088 ,  H01J2235/1204 ,  H01J2235/1241 ,  H01J2235/1262 ,  H01J2235/1291

Abstract: According to one aspect of the invention a robust anode structure and methods of making and using said structure to produce ionizing radiation are disclosed. An ionizing radiation producing layer is bonded to the target side of a highly conductive diamond substrate, by a metal carbide layer. The metal carbide layers improves the strength and durability of the bond, thus improving heat removal from the anode surface and reducing the risk of delaminating the ionizing radiation producing layer, thus reducing degradation and extending the anode's life. A smoothing dopant is alloyed into the radiation producing layer to facilitate keeping the layer surface smooth, thus improving the quality of the x-ray beam emitted from the anode. In an embodiment, the heat sink comprises a metal carbide skeleton cemented diamond material. In another embodiment, the heat sink is bonded to the diamond substrate structure in a high temperature reactive brazing process.

Abstract translation: 根据本发明的一个方面，公开了一种坚固的阳极结构和制造和使用所述结构以产生电离辐射的方法。 通过金属碳化物层将电离辐射产生层结合到高导电金刚石基底的靶侧。 金属碳化物层提高了粘结的强度和耐久性，从而改善了从阳极表面的散热，并降低了电离辐射产生层分层的风险，从而降低了降解并延长了阳极的使用寿命。 将平滑掺杂剂合金化到辐射产生层中以便于保持层表面光滑，从而提高从阳极发射的X射线束的质量。 在一个实施例中，散热器包括金属碳化物骨架胶结金刚石材料。 在另一个实施例中，散热器在高温反应性钎焊工艺中结合到金刚石基底结构。

公开(公告)号：US06400800B1

公开(公告)日：2002-06-04

申请号：US09752190

申请日：2000-12-29

Applicant: John M. Warren

Inventor： John M. Warren

IPC: H01J3510

CPC classification number: C04B37/026 ,  B23K35/32 ,  B23K35/325 ,  C04B2237/122 ,  C04B2237/363 ,  C04B2237/403 ,  C22C14/00 ,  H01J35/10 ,  H01J2235/084

Abstract: A joining method designed to minimize the temperature needed to obtain a high strength braze joint between a molybdenum alloy substrate and a graphite disk used in a rotating anode X-ray tube target used for computed tomography applications. The method consists of two separate brazing operations. The first brazing operation joins a thin molybdenum sheet to the graphite disk using a pure metal braze to form a plated graphite subassembly. The second brazing operation joins the plated graphite subassembly to the molybdenum alloy substrate using a highly specialized braze alloy having a melt temperature below the recrystallization temperature of said molybdenum alloy substrate and a remelt temperature after brazing above the recrystallization temperature of said molybdenum alloy substrate. This two step brazing reduces the probability of fracture in the graphite by maintaining the elevated temperature yield strength normally developed in forged molybdenum alloy substrates by avoiding the deleterious yield strength reduction associated with recrystallization of the molybdenum alloy substrate.

Abstract translation: 一种接合方法，其设计成使用于计算机断层成像应用的旋转阳极X射线管靶中使用的钼合金基板和石墨盘之间获得高强度钎焊接头所需的温度最小化。 该方法由两个单独的钎焊操作组成。 第一次钎焊操作使用纯金属钎焊将薄钼片连接到石墨盘上，以形成电镀石墨子组件。 第二钎焊操作使用熔融温度低于所述钼合金基板的再结晶温度的高度专业化的钎焊合金和在所述钼合金基板的再结晶温度之后的钎焊之后的熔融温度，将镀覆的石墨子组件连接到钼合金基板。 通过避免与钼合金基体的再结晶相关的有害的屈服强度降低，通过维持在锻造的钼合金基材中正常显现的升高的温度屈服强度，这两步钎焊降低了石墨中的断裂概率。

公开(公告)号：US5204891A

公开(公告)日：1993-04-20

申请号：US785122

申请日：1991-10-30

Applicant: David W. Woodruff ,  Minyoung Lee

Inventor： David W. Woodruff ,  Minyoung Lee

IPC: H01J9/14 ,  H01J35/10

CPC classification number: H01J35/108 ,  H01J2235/084

Abstract: An improved high performance x-ray tube having a rotating graphite anode therein and method of preparation thereof. The surface of a graphite anode body is oxidized in air for removing the surface damage caused during the machining of the anode body. The anode body is provided with a diffusion barrier layer of rhenium contiguously disposed on the substantially damage free surface of the anode body. An anode target layer is then deposited on top of the barrier layer.

Abstract translation: 一种改进的具有旋转石墨阳极的高性能X射线管及其制备方法。 石墨阳极体的表面在空气中被氧化，以消除在加工阳极体期间引起的表面损伤。 阳极体设置有连续设置在阳极体的基本无损表面上的铼的扩散阻挡层。 然后在阻挡层的顶部上沉积阳极靶层。

公开(公告)号：US4939762A

公开(公告)日：1990-07-03

申请号：US275534

申请日：1988-11-15

Applicant: Noboru Baba ,  Yusaku Nakagawa ,  Masatake Fukushima ,  Masateru Suwa ,  Ichiro Inamura

Inventor： Noboru Baba ,  Yusaku Nakagawa ,  Masatake Fukushima ,  Masateru Suwa ,  Ichiro Inamura

IPC: H01J9/14 ,  H01J35/10

CPC classification number: H01J35/108 ,  H01J2235/084

Abstract: An X-ray target having a graphite body and an X-ray generating metal coating layer, in that a metal interlayer which is non-reactive with graphite and which has a coefficient of thermal expansion substantially equal to those of the graphite and the X-ray generating metal coating layer is formed at the boundary between the graphite body and the X-ray generating metal coating layer, and that the interlayer is caused to percolate into the graphite body. Desirably, the interlayer includes a part percolating into the graphite body over a depth of at least 10 .mu.m. The X-ray target can be manufactured in such a way that the surface of the graphite body is coated with the metal interlayer by subjecting the surface to chemical vapor deposition under a normal pressure or under a pressure near the normal pressure, and that the metal interlayer is thereafter coated with an X-ray generating metal by an expedient such as chemical vapor deposition, sputtering or thermal spraying. Owing to the percolation of the metal interlayer into the graphite body, the contact area of the two increases conspicuously, and heat having developed in the X-ray generating metal coating layer is quickly transmitted to the graphite body.

Abstract translation: PCT No.PCT / JP88 / 00289 Sec。 371日期：1988年11月15日 102（e）1988年11月15日日期PCT提交1988年3月18日PCT公布。 出版物WO88 / 07260 PCT 日期：1988年9月22日。具有石墨体和X射线产生金属被覆层的X射线靶，其特征在于，与石墨不反应的金属中间层，其热膨胀系数基本上等于 的石墨和X射线产生金属涂层形成在石墨体和X射线产生金属涂层之间的边界处，并且使中间层渗入到石墨体中。 理想地，中间层包括在至少10μm的深度渗透到石墨体中的部分。 X射线靶可以通过在常压或常压附近的表面进行化学气相沉积，以使得石墨体的表面被金属中间层涂覆的方式制造，并且金属 然后通过诸如化学气相沉积，溅射或热喷涂的方法用X射线产生金属涂覆中间层。 由于金属中间层渗透到石墨体中，两者的接触面积明显增加，并且在X射线产生金属涂层中产生的热迅速传递到石墨体。

公开(公告)号：US4920012A

公开(公告)日：1990-04-24

申请号：US363833

申请日：1989-06-09

Applicant: David W. Woodruff ,  Joan M. Redwing

Inventor： David W. Woodruff ,  Joan M. Redwing

IPC: C23C16/06 ,  C23C16/08 ,  H01J9/14 ,  H01J35/10

CPC classification number: H01J35/10 ,  C23C16/08 ,  H01J9/14 ,  H01J2235/084 ,  Y10T428/12625 ,  Y10T428/1284

Abstract: Fine-grained and/or equiaxed tungsten and/or rhenium coatings, substantially free from columnar structure, are deposited on substrates (especially graphite) by chemical vapor deposition by directing the flow of reactant gases to the substrate with high velocity and in close proximity thereto, most often at a velocity gradient of at least about 1050 and preferably at least about 2000 cm./cm.-sec. The deposition process is preferably conducted while moving the substrate so as to coat large areas thereof. By this method, tungsten and/or rhenium-coated articles useful as X-ray targets having excellent properties under conditions of rapid temperature cycling may be produced.

Abstract translation: 基本上没有柱状结构的细晶粒和/或等轴钨和/或铼涂层通过化学气相沉积沉积在基板（特别是石墨）上，通过将反应物气体流以高速度并紧邻它们引导到基板上 最通常以至少约1050的速度梯度，优选至少约2000厘米/厘米2秒的速度梯度。 沉积过程优选在移动基板以便涂覆其大面积的区域的同时进行。 通过这种方法，可以生产用作在快速温度循环条件下具有优异性能的X射线靶的钨和/或铼涂覆制品。

公开(公告)号：US4847883A

公开(公告)日：1989-07-11

申请号：US7093

申请日：1987-01-27

Applicant: Jacques Fourre

Inventor： Jacques Fourre

IPC: H01J35/10

CPC classification number: H01J35/108 ,  H01J2235/084 ,  Y10T428/12625 ,  Y10T428/1284 ,  Y10T428/30

Abstract: The present invention concerns a support of carbonaceous material for a rotary target of X-ray tubes. The support is formed of two parts which are fixed with respect to each other, one part being of a carbon/carbon composite which provides mechanical strength and the other part being of polycrystalline graphite for receiving a refractory metal, by virtue of its coefficient of expansion. A thermal contact is provided between the two parts. The invention is especially applicable to targets of X-ray tubes which rotate at a high speed, 20,000 RPM and above.

Abstract translation: 本发明涉及用于X射线管的旋转靶的碳质材料的支撑体。 支撑体由相对于彼此固定的两个部分形成，一个部分是碳/碳复合材料，其提供机械强度，另一部分由用于接收难熔金属的多晶石墨，由于其膨胀系数 。 在两部分之间提供热接触。 本发明特别适用于以高速，20,000RPM以上旋转的X射线管的靶。

公开(公告)号：US4777643A

公开(公告)日：1988-10-11

申请号：US702164

申请日：1985-02-15

Applicant: Thomas M. Devine, Jr.

Inventor： Thomas M. Devine, Jr.

IPC: H01J35/10

CPC classification number: H01J35/108 ,  H01J2235/084

Abstract: A method for the diffusion bonding of a graphite member to a metallic surface as part of a composite rotary anode for an X-ray tube is set forth. In the completed structure a carbide-free compound laminate separating and metallurgically bonded to the graphite member and to the metallic surface consists of, in sequence, a layer of interdiffused metals comprising a first metal selected from the group consisting of molybdenum and tungsten and a second metal selected from the group consisting of tantalum, columbium and alloys thereof, a layer consisting essentially of the second metal, a zone of interdiffused metals comprising platinum and the second metal and then a continuous layer comprising platinum or platinum alloy.

Abstract translation: 阐述了作为X射线管的复合旋转阳极的一部分将石墨构件扩散接合到金属表面的方法。 在完成的结构中，分离和冶金结合到石墨构件和金属表面的无碳化物的复合层压体依次包括一层相互扩散的金属，其包括选自钼和钨的第一金属和第二 选自钽，铌及其合金的金属，基本上由第二金属组成的层，包含铂和第二金属的相互扩散金属的区域，然后是包含铂或铂合金的连续层。

公开(公告)号：US4573185A

公开(公告)日：1986-02-25

申请号：US625277

申请日：1984-06-27

Applicant: Brian D. Lounsberry ,  Robert W. Meade

Inventor： Brian D. Lounsberry ,  Robert W. Meade

IPC: H01J35/02 ,  H01J35/10

CPC classification number: H01J35/02 ,  H01J35/10 ,  H01J2235/084

Abstract: A tungsten focal track is placed on a graphite substrate in such a manner as to reduce off focal spot radiation while maintaining a fixed focal spot size. The radial width of the focal tract is made smaller than that of the electron beam from the cathode such that the electron beam overlap will allow for misalignments between the electron beam and the focal track without affecting the focal spot size or location.

Abstract translation: 将钨焦点轨道放置在石墨基板上，以便在保持固定焦点尺寸的同时减少焦点辐射。 使焦点的径向宽度小于来自阴极的电子束的径向宽度，使得电子束重叠将允许电子束与焦点轨迹之间的未对准而不影响焦斑尺寸或位置。