Chemical vapor deposition of diamond
    52.
    发明公开
    Chemical vapor deposition of diamond 失效
    Chemische Gasabscheidung von Diamanten。

    公开(公告)号:EP0539050A1

    公开(公告)日:1993-04-28

    申请号:EP92309084.9

    申请日:1992-10-06

    IPC分类号: C23C16/26

    摘要: Broadly, the present invention is directed to improving a chemical vapor phase deposition (CVD) method for synthesis of diamond wherein a hydrocarbon/hydrogen gaseous mixture is subjected to a combustion flame in the presence of oxygen to at least partially decompose the gaseous mixture to form CVD diamond. The improvement in process comprises subjecting said combustion flame to one or more of dielectric heating, d.c. discharge, or a.c. discharge. Dielectric heating can be accomplished by subjecting the combustion flame to microwave (MW) frequency discharge or radiofrequency (RF) discharge. By superimposing dielectric heating or d.c./a.c. discharge plasma generation on combustion flame process, the carbon utilization rate of the combustion flame process should improve substantially. As noted above, given the low carbon utilization rate for combustion flame techniques already, small percentage improvements in the carbon utilization rates translate into substantial cost savings in generation of CVD diamond by such combustion flame technique.

    摘要翻译: 概括地说,本发明涉及改进用于合成金刚石的化学气相沉积(CVD)方法,其中烃/氢气体混合物在氧气存在下经受燃烧火焰以至少部分分解气态混合物形成 CVD金刚石。 所述方法的改进包括使所述燃烧火焰经受介电加热,直流等级中的一种或多种。 放电或等 卸货。 介电加热可以通过对燃烧火焰进行微波(MW)频率放电或射频(RF)放电来实现。 通过叠加电介质加热或直流/ 在燃烧火焰过程中排放等离子体产生,燃烧火焰过程的碳利用率应显着提高。 如上所述,鉴于燃烧火焰技术的低碳利用率已经存在,通过这种燃烧火焰技术生成CVD金刚石,碳利用率的小幅度改善转化成显着的成本节约。

    Magnetic resonance surgery using heat waves produced with a laser fiber or focussed ultrasound
    53.
    发明公开
    Magnetic resonance surgery using heat waves produced with a laser fiber or focussed ultrasound 失效
    磁性手术使用通过利用转移的纤维或通过超声波聚焦的激光能量产生的脉冲的辐射热。

    公开(公告)号:EP0534607A1

    公开(公告)日:1993-03-31

    申请号:EP92307680.6

    申请日:1992-08-21

    IPC分类号: A61F7/00 A61B17/36

    摘要: Surgery is performed with pulsed heat means that selectively destroys tissue in a region within a patient. The size of the region destroyed is dependent upon the frequency of the pulses of the pulsed heat means and thermal conductivity of the tissue of the patient. The pulsed heat means can be a coherent optical source (80) that is guided by laser fiber to the tissue to be destroyed. In another embodiment the pulsed heat means is a focussed ultrasound transducer that dissipates ultrasonic energy at a focal point within the region of tissue to be destroyed. A magnetic resonance imaging system (10,20,30) employing a temperature sensitive pulse sequence creates an image of the tissue and the region being heated to allow a surgeon to alter the position of the pulsed heat means or vary the pulse frequency.

    摘要翻译: 手术进行用脉冲热bedeutet,DASS选择性破坏组织中的区域中的患者内。 破坏了区域的大小取决于脉冲热和患者的组织的热导率装置的脉冲的频率。 脉冲热装置可以是(80)并通过激光纤维引导到被破坏组织中的相干光源。 在另一实施例中的脉冲热装置是聚焦的超声换能器并在组织的区域内的焦点被破坏消散的超声波能量。 一种磁共振成像系统(10,20,30)使用一个对温度敏感的脉冲序列创建组织和该区域的图像被加热,以允许外科医生以改变脉冲热装置的位置或改变所述脉冲的频率。

    CVD diamond for coating twist drills
    54.
    发明公开
    CVD diamond for coating twist drills 失效
    CVD-Diamant zum Beschichten von Spiralbohrern。

    公开(公告)号:EP0470447A1

    公开(公告)日:1992-02-12

    申请号:EP91112493.1

    申请日:1991-07-25

    CPC分类号: C23C16/458 C23C16/271

    摘要: The present invention enables the diamond coating of stationary elongate objects, such as twist drills, with a continuous uniform film without any motion of the twist drill due to the unexpected superb "throwing power" of a reactor disclosed herein. The CVD diamond reactor includes a vacuum chamber, inlet for feed hydrogen/hydrocarbon mixtures, and an outlet, in conventional fashion. The improvement for coating with CVD diamond the entire outer surface of at least a portion of a plurality of stationary elongate objects comprises disposed within said reactor, an elongate metal tube having a plurality of apertures for holding elongate objects disposed radially inwardly and having a cooling pipe in thermal contact with and disposed about the outside of said metal tube; and a filament running within said tube along its lengthwise extent and being in electrical connection with the source of voltage for heating said filament to a temperature adequate to initiate hydrocarbon disassociation, the portions of said elongate object within said tube surrounding said filament being heated thereby.

    摘要翻译: 本发明使得由于本文公开的反应堆的意想不到的极好的“投掷力”,能够使具有连续均匀膜的固定细长物体(例如麻花钻)的金刚石涂层,而不需要麻花钻的任何运动。 CVD金刚石反应器以常规方式包括真空室,进料氢/烃混合物的入口和出口。 通过CVD金刚石涂层的改进使多个静止细长物体的至少一部分的整个外表面包括设置在所述反应器内的细长金属管,其具有多个孔,用于保持径向向内设置的细长物体并具有冷却管 与所述金属管的外部热接触并设置在所述金属管的外部; 以及沿着其长度方向在所述管内延伸的细丝,并且与用于将所述细丝加热到适于引发碳氢化合物分解的温度的电压源电连接,所述细长物体围绕所述细丝的部分被加热。

    CVD Diamond workpieces and their fabrication
    55.
    发明公开
    CVD Diamond workpieces and their fabrication 失效
    CVD-Diamantwerkstückeund ihre Herstellung。

    公开(公告)号:EP0442303A1

    公开(公告)日:1991-08-21

    申请号:EP91100953.8

    申请日:1991-01-25

    IPC分类号: C23C16/26

    CPC分类号: C23C16/27 C23C16/01

    摘要: The present invention is addressed to a method for making diamond workpieces which comprises the steps of placing in a chamber a pattern heated to an elevated CVD diamond-forming temperature, the pattern being the negative of the workpiece. A hydrocarbon/hydrogen gaseous mixture is provided within the chamber in the next step. The gaseous mixture then is at least partially decomposed in the chamber to form/deposit the CVD diamond layer on a surface of the pattern. In the final step, the CVD diamond layer is removed from the pattern to form the workpiece which possesses the surface characteristics of the surface of the pattern upon which it was formed. Appropriate workpieces that can be made in accordance with the inventive process include convergent, divergent, and flat optical mirrors; nozzles, wire dies, and tubular shaped workpieces; curved, angular, and re-entrant shaped workpieces useful in grinding, cutting, wear, and other applications; and a variety of additional products.

    摘要翻译: 本发明涉及一种用于制造金刚石工件的方法,其包括以下步骤:将加热到升高的CVD金刚石形成温度的图案放置在腔室中,该图案是工件的负极。 在下一步骤中,在室内提供烃/氢气体混合物。 气体混合物然后在腔室中至少部分分解以在图案的表面上形成/沉积CVD金刚石层。 在最后一步中,将CVD金刚石层从图案上去除以形成工件,该工件具有形成于其上的图案表面的表面特性。 可以根据本发明的方法制造的合适的工件包括会聚的,发散的和平的光学镜; 喷嘴,丝模和管状工件; 弯曲,有角度和重入型的工件,可用于磨削,切割,磨损和其他应用; 和各种附加产品。

    Method of making a single crystal CVD diamond
    56.
    发明公开
    Method of making a single crystal CVD diamond 失效
    维尔法赫恩·赫斯特伦·冯·迪亚曼特·爱克里斯塔伦(DEMF)

    公开(公告)号:EP0413974A1

    公开(公告)日:1991-02-27

    申请号:EP90114057.4

    申请日:1990-07-23

    IPC分类号: C30B25/02 C30B29/04 C23C16/26

    摘要: A method is provided for making a single crystal diamond by chemical vapor deposition which utilizes a single crystal seed of a HPHT diamond and a hydrocarbon-hydrogen mixture, such as methane-hydrogen mixtures containing a effective amount of a metallocene, such as ferrocene. It has been found that the use of a metallocene in the hydrocarbon-­hydrogen mixture suppresses secondary nucleation of polycrystalline diamond.

    摘要翻译: 提供了一种通过化学气相沉积制造单晶金刚石的方法,其利用HPHT金刚石的单晶种子和烃 - 氢混合物,例如含有有效量的茂金属如二茂铁的甲烷 - 氢混合物。 已经发现,在烃 - 氢混合物中使用金属茂抑制多晶金刚石的二次成核。