Polycrystalline diamond powder production methods

In synthetic diamond technology, the most mature and to be more widely used is the static method, which is the use of hydraulic pressure on both sides of the top, sides, or cubic press the top of the static pressure and electric furnaces produce heat generated in the catalytic action of the graphite the phase transition into the diamond, the diamond crystal. However, this method a large investment in equipment, raw  polycrystalline diamond complex particle size distribution from several microns to several hundred microns, and the particles were irregular monocrystalline, with sharp edges.
Followed by detonation method using explosive high temperature and pressure generated when the thermodynamic and kinetic conditions of the negative oxygen balance explosives plus excess carbon or carbon detonation dissociation process, coalescing and phase  Polycrystalline diamond  processes, generate a spherical appearance and single crystal diamond nano cube with sharp edges and irregular shape of micron polycrystalline diamond and polycrystalline diamond is composed of many small particles tiny nanoscale gathered together, collectively known as ultra-fine carbon materials. Wherein the nano-diamond particle size mainly distributed in 1-20nm, the polycrystalline diamond particle size distribution in the 0.5-15um. After purification grading subsequent processing steps, we get a different size range of polycrystalline diamond powder.
These materials not only has the traditional diamond graphite and carbon materials chemistry, mechanics, heat, light, electricity, magnetism and so many of the excellent performance, but also has the unique quality of mesoscopic materials in the fields of defense and civilian application prospect.