Open AccessSpectroscopic methods of investigation and the thermal stability of detonation nanodiamonds
Author(s) -
V. P. Efremov,
E. I. Zakatilova
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1238/1/012013
Subject(s) - nanodiamond , detonation , materials science , diamond , graphite , thermal stability , diffraction , phase (matter) , amorphous solid , irradiation , thermal analysis , scanning electron microscope , analytical chemistry (journal) , thermal , composite material , crystallography , chemical engineering , optics , chemistry , thermodynamics , explosive material , physics , organic chemistry , chromatography , nuclear physics , engineering
The behavior of detonation nano- and microdiamonds at increased temperatures is studied by synchronous thermal analysis, X-ray diffraction analysis, and scanning electron microscopy. The X-ray analysis of survived samples shows that a part of the nanodiamond is stable under heating to 1500°C. At the heating to 600°C, we see the decreasing of nanodiamond phase. Appearance of graphite phase isn’t observed in the sample up to 1500°C. However, in the range Bragg angle 20-32° after heating to 1500°C, the x-ray amorphous graphite-like phase is observed. The analysis of microphotographs of samples before and after heating showed the influence of heating rate on the parameters of powder particles. A high thermal stability of detonation microdiamonds (above 1500°C) is established. Literature data on the radiation stability of diamond are analyzed. It is established that the character of the diamond damage depends on the type and dose of the irradiation.