The invention relates to a synthetic diamond preparation device for synthesis with double carbon sources

Key words: double carbon source, artificial diamond materials|2018-06-22 08:44:02| industry patent

Application number: 201721459229.7

Application date: October 31, 2017

Inventor: cao dahu;Long Zhengxin;Pei-pei li

Abstract: the utility model relates to a synthetic diamond preparation device for two-carbon source synthesis, which comprises a pressure transfer medium cube, a graphite heating tube and a synthesis chamber. The MgO crystal bed of the synthesis chamber is provided with an intercalated crystal seed groove, and the MgO crystal bed is also provided with a number of blind holes.The utility model can significantly improve the growth rate of diamond single crystal in the first 48 hours when multiple artificial diamond single crystal is grown by using graphite ‑ diamond micro powder double carbon source in high-temperature ‑ high-pressure temperature gradient method, so that the average growth rate of single crystal can reach 10mg/hr.Single crystal clarity can reach VVS level.    

Main claim:

A double artificial diamond carbon source synthesis preparation device, its characteristics is described the preparation of devices including pressure dielectric cube, graphite heating tube and synthetic chamber, described in the graphite heating tube is located in the inner hole wall pressure transfer medium cube, as described in synthetic chamber from the bottom of MgO style crystal bed, along the MgO style crystal bed set of MgO style around pipe MgO style of the lid and the synthesis of enclosed Spaces;The outer wall of the MgO tube of the synthetic chamber is closely fitted with the inner wall of the graphite heating tube.The MgO cover and the MgO crystal bed are provided with a space containing a carbon source and a metal catalyst.The MgO crystal bed is provided with an intercalated seed holding groove, and the MgO crystal bed is provided with a number of blind holes.
 

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