Powder catalyst structure of synthetic high-grade diamond

• Main Authors: YUSHUN LI, CANHUA LU, LAIYUN HU
• Format: Patent
• Language: English
• Published: 04.06.2003
• 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 powder accelerant structure of synthesizing high grade diamond to the technical field of synthesis and preparation of diamond. The utility model is mainly characterized in that a dolomite liner tube is nested in the inner wall of a sleeve barrel cavity which is synthesized by pyrophyllite blocks, the central part of the sleeve barrel cavity of pyrophyllite blocks is arranged with a graphitic synthetic button stem, the external surface of the graphitic synthetic button stem is arranged with an isolated layer, the upper end and the lower end are arranged with electric sheet metals and dolomite rings, wherein the isolated layer and the electric sheet metals are separated into a cavity body through the dolomite rings, a heating plate is arranged in the cavity body, and electric circles are arranged on two ends of the inner wall of the sleeve barrel of the pyrophyllite blocks and are connected with the electric sheet metals. Compared with prior art, due to the adoption of the utility model, the indexes on monocrystal intact rate, high strength ratio and impact strength of synthetical diamond are all improved over once, and the synthesizing power is relatively low. Compared with flaky accelerant and the cavity body, electric power consumption can be saved by one third to one half.