Инд. авторы:	Chepurov A.I., Sonin V.M., Shcheglov D.V., Zhimulev E.I., Sitnikov S., Yelisseyev A.P., Chepurov A.A.
Заглавие:	Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation
Библ. ссылка:	Chepurov A.I., Sonin V.M., Shcheglov D.V., Zhimulev E.I., Sitnikov S., Yelisseyev A.P., Chepurov A.A. Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation // CRYSTALS. - 2021. - Vol.11. - Iss. 11. - Art.1341.
Внешние системы:	DOI: 10.3390/cryst11111341; WoS: 000726708800001;
Реферат:	eng: The study of diamond surfaces is traditionally undertaken in geology and materials science. As a sample material, two natural diamond crystals of type Ia were selected, and their luminescence and nitrogen state was characterized. In order to etch the surface catalytic hydrogenation was performed using Fe particles as an etchant. Micromorphology of the surface was investigated by scanning electron and laser confocal microscopy. It was demonstrated that etching occurred perpendicular to the crystal surface, with no signs of tangential etching. The average depth of caverns did not exceed 20-25 mu m with a maximal depth of 40 mu m. It is concluded that catalytic hydrogenation of natural type Ia diamonds is effective to produce a porous surface that can be used in composites or as a substrate material. Additionally, the comparison of results with porous microsculptures observed on natural impact diamond crystals from the Popigai astrobleme revealed a strong resemblance.
Ключевые слова:	STABILITY; DEPOSITION; FABRICATION; DISSOLUTION; NANOPARTICLES; FE; KIMBERLITIC MELTS; IRON PARTICLES; IMPACT DIAMONDS; impact diamond; surface; etching; diamond; GRAPHITE;
Издано:	2021
Физ. характеристика:	1341