Effect of Inner Liner Material (Dolomite) on Synthetic Diamond

From the investigations on the inner liner material made up of mainly dolomite by slice, X-radial powder diffraction and chemical analysis before and after high temperature and pressure, it is found that dolomite is stable under the conditions of high temperature and pressure. However permeating cleavage texture were developed. Therefore dolomite under high temperature and pressure is deformed through cracking. Flow-transforming characteristics under static pressure are manifested with the permeating cleavage texture style. Impurities formed coesite and augite. Formless carbon appears, but there is no free CaO, MgO formed. According to the results it is suggested that dolomite inner liner takes much sort action and can improve the total performance of the material passing pressure and pressurizing on the process of synthesizing diamond. This result was important for the development of the material passing pressure and pressurizing for synthesizing diamond.