| 摘要 |
A surface-modified polycrystalline diamond and a processing method thereof are provided in the present disclosure. The polycrystalline diamond comprises a polycrystalline diamond body, holes are formed on the polycrystalline diamond body after a catalyst metal is removed, and the holes are embedded with a non-catalyst metal. According to the surface-modified polycrystalline diamond and the processing method thereof of the present disclosure, the catalyst metal is removed from the polycrystalline diamond body, and the non-catalyst metal is embedded into the holes that are formed in a surface of the polycrystalline diamond after the catalyst metal is removed therefrom. Thus, thermal damage and stress damage to the polycrystalline diamond during operations at a high temperature are eliminated, improve the thermal conductivity of the surface of the polycrystalline diamond, reduce the temperature of the area around the operating point of the polycrystalline diamond and, therefore, the service life of the polycrystalline diamond is prolonged.
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