Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation

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 usi...

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Autores principales:	Aleksei Chepurov, Valeri Sonin, Dmitry Shcheglov, Egor Zhimulev, Sergey Sitnikov, Alexander Yelisseyev, Anatoly Chepurov
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	diamond etching surface impact diamond Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/0e1e0414c2b8463bbd3bbfe0625ddb5b
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id	oai:doaj.org-article:0e1e0414c2b8463bbd3bbfe0625ddb5b
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spelling	oai:doaj.org-article:0e1e0414c2b8463bbd3bbfe0625ddb5b2021-11-25T17:18:29ZSurface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation10.3390/cryst111113412073-4352https://doaj.org/article/0e1e0414c2b8463bbd3bbfe0625ddb5b2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1341https://doaj.org/toc/2073-4352The 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 μm with a maximal depth of 40 μm. 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.Aleksei ChepurovValeri SoninDmitry ShcheglovEgor ZhimulevSergey SitnikovAlexander YelisseyevAnatoly ChepurovMDPI AGarticlediamondetchingsurfaceimpact diamondCrystallographyQD901-999ENCrystals, Vol 11, Iss 1341, p 1341 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	diamond etching surface impact diamond Crystallography QD901-999
spellingShingle	diamond etching surface impact diamond Crystallography QD901-999 Aleksei Chepurov Valeri Sonin Dmitry Shcheglov Egor Zhimulev Sergey Sitnikov Alexander Yelisseyev Anatoly Chepurov Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation
description	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 μm with a maximal depth of 40 μm. 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.
format	article
author	Aleksei Chepurov Valeri Sonin Dmitry Shcheglov Egor Zhimulev Sergey Sitnikov Alexander Yelisseyev Anatoly Chepurov
author_facet	Aleksei Chepurov Valeri Sonin Dmitry Shcheglov Egor Zhimulev Sergey Sitnikov Alexander Yelisseyev Anatoly Chepurov
author_sort	Aleksei Chepurov
title	Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation
title_short	Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation
title_full	Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation
title_fullStr	Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation
title_full_unstemmed	Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation
title_sort	surface porosity of natural diamond crystals after the catalytic hydrogenation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0e1e0414c2b8463bbd3bbfe0625ddb5b
work_keys_str_mv	AT alekseichepurov surfaceporosityofnaturaldiamondcrystalsafterthecatalytichydrogenation AT valerisonin surfaceporosityofnaturaldiamondcrystalsafterthecatalytichydrogenation AT dmitryshcheglov surfaceporosityofnaturaldiamondcrystalsafterthecatalytichydrogenation AT egorzhimulev surfaceporosityofnaturaldiamondcrystalsafterthecatalytichydrogenation AT sergeysitnikov surfaceporosityofnaturaldiamondcrystalsafterthecatalytichydrogenation AT alexanderyelisseyev surfaceporosityofnaturaldiamondcrystalsafterthecatalytichydrogenation AT anatolychepurov surfaceporosityofnaturaldiamondcrystalsafterthecatalytichydrogenation
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Surface Porosity of Natural Diamond Crystals after the Catalytic Hydrogenation

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