Investigation of the interface of two-layer diamond plates for drilling tools

  • 1 Technological Institute for Superhard and Novel Carbon Materials, Moscow, Russia
  • 2 Moscow Institute of Physics and Technology (State University), Moscow, Russia


Two-layer diamond-hard alloy plate is the cutting element of the drill bit and consists of a layer of polycrystalline diamond compact (PDC) binded with the superhard alloy substrate (WC-Co). PDC tools are now actively used in the drilling of mineral resources for the search and production of hydrocarbons.
Full-scale tests of PDC cutters in PDC bits have shown that their strength, wearability, and especially heat resistance, are determined by the quality of the contact layer (interface) between the PDC and the substrate. In the work, the interface of the diamond layer and the substrate of two-layer diamond plates made on the installation based on a multi-punch press GY850 was investigated by laser-ultrasonic flaw detection.



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