A SUPERHARD STRUCTURE AND METHOD OF MAKING SAME
    5.
    发明申请
    A SUPERHARD STRUCTURE AND METHOD OF MAKING SAME 审中-公开
    超级结构及其制造方法

    公开(公告)号:WO2012089566A1

    公开(公告)日:2012-07-05

    申请号:PCT/EP2011/073473

    申请日:2011-12-20

    Abstract: A superhard structure comprises a body of polycrystalline superhard material comprising a first region and a second region, the second region being adjacent an exposed surface of the superhard structure, the second region comprising a diamond material or cubic boron nitride, the density of the second region being greater than 3.4x103 kilograms per cubic metre when the second region comprises diamond material. The material(s) forming the first and second regions have a difference in coefficient of thermal expansion, the first and second regions being arranged such that this difference induces compression in the second region adjacent the exposed surface. The first/a further region has the highest coefficient of thermal expansion of the polycrystalline body and is separated from a peripheral free surface of the body of polycrystalline superhard material by the second region or one or more further regions formed of a material or materials of a lower coefficient of thermal expansion. The regions comprise a plurality of grains of polycrystalline superhard material. There is also disclosed a method of making such a material.

    Abstract translation: 超硬结构包括多晶超硬材料体,其包括第一区域和第二区域,第二区域与超硬结构的暴露表面相邻,第二区域包括金刚石材料或立方氮化硼,第二区域的密度 当第二区域包括金刚石材料时,其每立方米大于3.4×103公斤。 形成第一和第二区域的材料具有热膨胀系数的差异,第一和第二区域被布置成使得该差异在邻近暴露表面的第二区域中引起压缩。 第一/另一区域具有最高的多晶体体系热膨胀系数,并且通过第二区域与多晶超硬材料体的周边自由表面分离,或者由一种或多种材料形成的一个或多个其它区域 较低的热膨胀系数。 这些区域包括多个多晶超硬材料颗粒。 还公开了制造这种材料的方法。

    POLYCRYSTALLINE DIAMOND CONSTRUCTIONS HAVING OPTIMIZED MATERIAL COMPOSITION
    8.
    发明申请
    POLYCRYSTALLINE DIAMOND CONSTRUCTIONS HAVING OPTIMIZED MATERIAL COMPOSITION 审中-公开
    具有优化材料组成的多晶金刚石结构

    公开(公告)号:WO2012071515A2

    公开(公告)日:2012-05-31

    申请号:PCT/US2011062047

    申请日:2011-11-23

    Abstract: Diamond bonded constructions include a diamond body comprising intercrystalline bonded diamond and interstitial regions. The body has a working surface and an interface surface, and may be joined to a metallic substrate. The body has a gradient diamond volume content greater about 1.5 percent, wherein the diamond content at the interface surface is less than 94 percent, and increases moving toward the working surface. The body may include a region that is substantially free of a catalyst material otherwise disposed within the body and present in a gradient amount. An additional material may be included within the body and be present in a changing amount. The body may be formed by high-pressure HPHT processing, e.g., from 6,200 MPa to 10,000 MPa, to produce a sintered body having a characteristic diamond volume fraction v. average grain size relationship distinguishable from that of diamond bonded constructions form by conventional-pressure HPHT processing.

    Abstract translation: 金刚石结合结构包括包含晶间结合金刚石和间隙区域的金刚石主体。 主体具有工作表面和界面表面,并且可以连接到金属基底。 主体的梯度金刚石体积含量大于约1.5%,其中界面处的金刚石含量小于94%,并且朝向工作表面增加。 该主体可以包括基本上不含催化剂材料的区域,否则该催化剂材料设置在主体内并且以梯度量存在。 另外的材料可以包含在身体内并且以不断变化的量存在。 该主体可以通过高压HPHT处理形成,例如从6,200MPa至10,000MPa,以产生特征金刚石体积分数与通过常规压力形成的金刚石结合结构区别的平均粒度关系的特征的烧结体 HPHT处理。

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