Difficult to form the diamond substrate and a metallurgical bond with the surface chemistry

The inert surface of the diamond is large, with a variety of binders large difference between the wetting properties, it is difficult to form the surface of the substrate and the diamond chemical metallurgical bonding with the matrix holding the diamond weak.  Diamond blade of diamond powder, diamond powder products are mainly stage sintering furnace by sintering compacts, sintered diamond tools and general process, the sintering temperature is influenced by changes in diamond  synthetic diamond  temperature limit, the binder of the diamond easily not strong bonding between the diamond or cause burning, and for shaped diamond powder products (such as sawtooth workpiece, the workpiece surface, etc.), the use of conventional pressure sintering method is difficult to achieve, the current general shaped workpieces by means of rapid prototyping to get.