High grade diamond forming structure by crystal seed synthesis

• Main Authors: CANHUA LU, PAN JIA
• Format: Patent
• Language: English
• Published: 19.01.2005
• Edition: 7
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The utility model provides a high grade diamond forming structure by crystal seed synthesis for the technical field of diamond preparation. The utility model is characterized in that a dolomite liner tube and a dolomite ring are nested in the inner wall of a sleeve cavity which is synthetized by pyrophyllite blocks; insulating layers are arranged on the inner wall and at the upper end and the lower end of the liner tube, and core columns by crystal seed synthesis are arranged in the insulating layers; the dolomite ring is positioned between the insulating layers which are arranged at the upper part and the lower part of the liner tube and a conducting metal sheet, so that a heating cavity can be formed; a heating sheet is arranged in the heating cavity, and conducting rings which are contacted with the conducting metal sheet are arranged on the inner wall at both ends of the sleeve of the pyrophyllite blocks. Compared with the prior art, the high grade diamond which is formed by adopting the high grade diamond forming structure by crystal seed synthesis has the advantages of good crystal form, high transparency, powerful heat impact toughness, etc.