HPHT Synthesis of Different Shape Coarse-Grain Diamond Single Crystals
ZHOU Sheng-Guo1, ZANG Chuan-Yi1, MA Hong-An2, HU Qiang1, LI Xiao-Lei1, LI Shang-Sheng2, ZHANG He-Min1, JIA Xiao-Peng1,2
1Institute of Material Science and Engineering Henan Polytechnic University, Jiaozuo 4540002National Laboratory of Super Hard Materials, Jilin University,Changchun 130012
HPHT Synthesis of Different Shape Coarse-Grain Diamond Single Crystals
ZHOU Sheng-Guo1, ZANG Chuan-Yi1, MA Hong-An2, HU Qiang1, LI Xiao-Lei1, LI Shang-Sheng2, ZHANG He-Min1, JIA Xiao-Peng1,2
1Institute of Material Science and Engineering Henan Polytechnic University, Jiaozuo 4540002National Laboratory of Super Hard Materials, Jilin University,Changchun 130012
摘要Synthesis of coarse-grain diamond crystals is studied in a China-type SPD6×1670T cubic high-pressure apparatus with high exact control system. To synthesize high quality coarse-grain diamond crystals, advanced indirect heat assembly, powder catalyst technology and optimized synthesis craft are used. At last, three kinds of coarse-grain diamond (about 0.85mm) single crystals with hexahedron, hex-octahedron and octahedron are synthesized successfully under HPHT (about 5.4GPa, 1300-1450°). The growth characters of different shape crystals are discussed. The results and techniques might be useful for the production of coarse-grain diamonds.
Abstract：Synthesis of coarse-grain diamond crystals is studied in a China-type SPD6×1670T cubic high-pressure apparatus with high exact control system. To synthesize high quality coarse-grain diamond crystals, advanced indirect heat assembly, powder catalyst technology and optimized synthesis craft are used. At last, three kinds of coarse-grain diamond (about 0.85mm) single crystals with hexahedron, hex-octahedron and octahedron are synthesized successfully under HPHT (about 5.4GPa, 1300-1450°). The growth characters of different shape crystals are discussed. The results and techniques might be useful for the production of coarse-grain diamonds.
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2009, Vol. 26 
