Thick-Grain Diamonds Growth and Ascertainment of Its Thermodynamic Conditions

In this paper, starting from theory of thermodynamics, we have studied the dispersion characteristic of crystalline-grain and crystalline-quality of diamonds, on the basis of equilibrium diagram theory of graphite-diamond (G-D) phases. The key to the discussion is placed on the growth districts of thick-grain-size diamond and their thermodynamic conditions. Guided by the above-mention theory, we got good results in our productive test.