SUMICRYSTAL
“SUMICRYSTAL” is synthetic single crystal dia- mond which Sumitomo Electric succeeded in mass production for the first time in the world. “SUMICRYSTAL” is manufactured under severe quality control has stable quality, so it is suitable for industrial materials.
Synthesis of SUMICRYSTAL
Large high quality single crystal diamonds are synthesized under ultra-high pressure (50,000 atmospheres) and high temperature (over 1,300 ℃). The figure to the right shows the inside of an ultra-high pressure apparatus. A temperature gradient is created in the interior of the heater. This gradient is used to melt the carbon source into a molten solvent metal. This process allows the diamond to grow on a seed crystal. In order to accurately synthesize large high quality crystal, it is necessary to have purity materials and advanced technology for maintaining synthesizing conditions constant over a long period of time.
The inside of an ultra-high pressure apparatus.
Made with FlippingBook Online newsletter