The PDC ( diamond composite) with excellent impact toughness. As a cutting tool, diamond composite are widely used in oil and gas drilling operations.

During the drilling process, due to the combined effect of axial force and horizontal cutting force, the friction between the drill and the hole wall, the bending

of the drill string, the uneven bottom hole, the residual rock powder and the vibration of the drill, etc., which make the PDC are subjected to big impact. The 

impact resistance of the diamond composite reflects the toughness and bond strength of the composite. It is a comprehensive index and the key to determining

the effectiveness of the use.