公开(公告)号：US20190351487A1

公开(公告)日：2019-11-21

申请号：US16474241

申请日：2017-12-28

申请人： ELEMENT SIX (UK) LIMITED

发明人： Rachael Fiona AMBURY ,  Nedret CAN ,  Thomasz Zbyszko RYBAK ,  Raymond Anthony SPITS ,  Changzheng JI

IPC分类号： B22F7/06 ,  B22F3/14

摘要： A polycrystalline super hard construction has a first region comprising a body of thermally stable polycrystalline super hard material having an exposed surface forming a working surface, and a peripheral side edge, said polycrystalline super hard material comprising a plurality of intergrown grains of super hard material; a second region forming a substrate to the first region, the second region comprising a hard phase and a binder phase; and a third region interposed between the first and second regions, the third region extending across a surface of the second region along an interface. The third region comprises a composite material having a first phase comprising a plurality of non-intergrown grains of super hard material, and a matrix material. The super hard polycrystalline construction further has a fourth region interposed between the second region and the third region, a major proportion of the fourth region comprising one or more components of the binder material of the second region, the fourth region further comprising one or more reaction products between the binder material of the second region and one or more components of the third region.