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    Diamond synthesis
    2.
    发明公开
    Diamond synthesis 失效
    Diamantsynthese。

    公开(公告)号：EP0322217A1

    公开(公告)日：1989-06-28

    申请号：EP88312120.4

    申请日：1988-12-21

    申请人： DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED

    发明人： Davies, Geoffrey John ,  Burns, Robert Charles ,  Gardner, Stephen

    IPC分类号： B01J3/06 ,  C01B31/06

    CPC分类号： B01J3/062 ,  B01J2203/061 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/068

    摘要： Large diamond crystals are produced in a reaction vessel which contains a tetrahedrally bonded crystalline non-diamond seed material (30) separated from a source (26) of substantially pure carbon by a mass (24) of metallic catalyst/solvent for diamond synthesis. The arrangement is such that a temperature gradient is created between the seed material (30) and the carbon source (26) under the applied conditions of temperature and pressure such that the seed material is located at a point near the minimum value of temperature for the gradient and the carbon source is located at a point near the maximum value of temperature for the temperature gradient. Examples of suitable non-diamond seed material are cubic boron nitride and α-silicon carbide.

    摘要翻译： 大型金刚石晶体在反应容器中产生，该反应容器含有通过用于金刚石合成的金属催化剂/溶剂的质量（24））与基本上纯的碳源（26）分离的四面体键合的结晶非金刚石种子材料（30）。 该布置使得在施加的温度和压力条件下，在种子材料（30）和碳源（26）之间产生温度梯度，使得种子材料位于靠近温度的最小值的点附近 梯度，碳源位于靠近温度梯度的最大温度值的点。 合适的非金刚石种子材料的实例是立方氮化硼和α-碳化硅。

    Diamond synthesis
    7.
    发明公开
    Diamond synthesis 失效
    Diamantsynthese。

    公开(公告)号：EP0523923A1

    公开(公告)日：1993-01-20

    申请号：EP92306338.2

    申请日：1992-07-10

    申请人： DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED

    发明人： Burns, Robert Charles ,  Welch, Dennis Leonard

    IPC分类号： C01B31/06 ,  B01J3/06

    CPC分类号： B01J3/062 ,  B01J2203/061 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/068

    摘要： A reaction vessel for use in producing large diamond crystals of good quality and yield includes a reaction volume and a reaction mass located in the volume. The reaction mass comprises a plurality of seed particles (24) located in or on a surface (26) in the reaction volume and a carbon source (22) separated from the seed particles (24) by a mass of metallic catalyst/solvent (20) for diamond synthesis. The mass (20) comprises alternating layers (30, 32) of carbon-rich and carbon-lean metallic catalyst/solvent which lie parallel or substantially parallel to the surface (26). There is also provided a mass (18) of alternating layers (30, 32) of carbon-rich and carbon-lean metallic catalyst/solvent.

    摘要翻译： 用于生产质量和产率高的大型金刚石晶体的反应容器包括位于体积中的反应体积和反应物质。 反应物质包括位于反应体积中的表面（26）中或其上的多个种子颗粒（24）和通过大量金属催化剂/溶剂（20）与种子颗粒（24）分离的碳源（22） ）用于金刚石合成。 质量块（20）包括富含碳和贫碳的金属催化剂/溶剂的交替层（30,32），其平行或基本平行于表面（26）。 还提供了富含碳和贫碳的金属催化剂/溶剂的交替层（30,32）的质量（18）。