Single crystal diamond particles formed by the reaction of carbon black and solid alcohol under high-pressure and high-temperature

The paper presents results of high-pressure and high-temperature (HPHT) experiments on the formation of diamond particles from precursors a mixture consists of carbon black powder and pentaerythritol of a solid alcohol. X-ray diffraction, FE-SEM and TEM methods as well as Raman spectroscopy have been used for char-acterization of the precursors and formed crystals. The main idea is to avoid any catalyst-based material at HPHT diamond synthesis from carbon materials. The successful formation of cubic structure single crystal diamond particles around 10 mu m size during an extremely shorter time (5 s) at 7.5 GPa and 1500 celcius is demonstrated.

Automated summary

The paper presents the results of experiments on the synthesis of diamond particles from carbon materials under high-pressure high-temperature conditions. By characterizing the precursors and formed crystals, it is demonstrated that cubic structure single crystal diamond particles can be successfully synthesized in a very short time under high pressures and temperatures.