Synthesis and characterization of strip-shape diamonds from Fe-based alloy and graphite system under high pressure and high temperature |
| |
| Authors: | M.H. Hu H.A. Ma W.Q. Liu Z.F. Zhang M. Zhao Y. Li W. Guo J.M. Qin X. Jia |
| |
| Affiliation: | 1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;2. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China |
| |
| Abstract: | The unusual strip-shape diamond crystals were successfully synthesized in the system of Fe-based powder alloy and graphite under pressures of 5.6–5.8 GPa and temperatures of 1600–1650 K in a cubic anvil high pressure high temperature (HPHT) apparatus (SPD-6×1200). The synthetic diamond crystals have a strip-shape with light green color. The lengths of the crystals are 0.6–0.8 mm with length to diameter ratios around 2.0–2.5. SEM photographs reveal that the crystals have two main kinds of shapes: one elongated along the (1 0 0) and the other along the (1 1 1) directions. The FTIR spectra of the diamond synthesized indicate that its nitrogen concentration is higher than the normal diamond crystal. |
| |
| Keywords: | A1. Characterization A1. Crystal morphology B1. Diamond B3. Infrared devices |
| 本文献已被 ScienceDirect 等数据库收录！ |
