Synthetic process for improving synthetic yield of artificial diamond single crystal

• Main Authors: HE WENJIANG, ZHOU YANZHANG, ZAN YANAN, WU DINGYU, YI LIANGCHENG, HAN CHANGYU
• Format: Patent
• Language: Chinese; English
• Published: 15.11.2022
• 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 invention belongs to the technical field of manufacturing processes of superhard materials, and particularly relates to a synthesis process for improving the synthetic yield of artificial diamond single crystals. The method comprises the steps of preparing a synthetic core column, assembling, synthesizing at high temperature and high pressure, crushing and the like. According to the method disclosed by the invention, by adjusting the assembly mode of the synthetic catalyst and the synthetic core column, the synthetic pressure and the like, the number of continuous diamond crystals can be effectively controlled, the quality of a synthesized product is stable, and the process repeatability is high. The synthesis process method disclosed by the invention adopts a'three-time stepped pressure boosting method ', a large number of spontaneous crystal nucleuses can be formed in each stepped pressure boosting process, and meanwhile, the growth speed of the generated crystal nucleuses is accelerated, so that the sy