Diamond compact performance and powder size of close relationship

     Diamond single crystal, the texture is very hard, and it also has a very high wear resistance and thermal stability, but if the different crystal together will have different properties with each different crystal faces. In diamond compact sintering process, all of the diamond powder crystal because in any direction configuration, so, from the macroscopic direction of sintering diamond micro powder is isotropic, so diamond compact improvement in the strength of the shock.

     Production of PDC can by different number of average particle size and size distribution of the statistical distribution of diamond powder mixed formula. Is by adjusting the diamond micro powder particle size and gradation composition formula to adjust the performance of PDC. One aspect is that the smaller the grain size of the sintered body, the better the wear resistance of sintered body, of course it at the expense of partial resistance to impact toughness for PDC cost. If the opposite way, it is diamond powder formula using coarse granularity, the experiment results is when the average particle size increased to more than 48 microns, the impact toughness of PDC is no obvious improvement.