SUPERHARD CONSTRUCTIONS & METHODS OF MAKING SAME

A superhard polycrystalline construction comprises a body of polycrystalline superhard material formed of a mass of superhard grains exhibiting inter-granular bonding and defining a plurality of interstitial regions therebetween, and a non-superhard phase at least partially filling a plurality of the interstitial regions and having an associated shape factor of greater than around 0.65 and a substrate bonded to the body of superhard material along an interface, the substrate having a region adjacent the interface comprising binder material in an amount at least 5% less than the remainder of the substrate. 种超硬多晶结构，其包括由大量超硬晶粒和非超硬相形成的多晶的超硬材料的主体，所述超硬晶粒表现出晶间结合并在其间限定出多个间隙区域，所述非超硬相至少部分地填充多个所述间隙区域，并具有大于大约0.65的相关的形状因子，和沿着界面结合到超硬材料的主体的基底，所述基底具有与界面相邻的区域，所述区域包括粘结料，其份量比基底的其余部分少至少5％。