TY - JOUR

T1 - A highly porous surface of synthetic monocrystalline diamond

T2 - Effect of etching by Fe nanoparticles in hydrogen atmosphere

AU - Chepurov, Aleksei

AU - Sonin, Valery

AU - Shcheglov, Dmitry

AU - Latyshev, Alexander

AU - Filatov, Evgeny

AU - Yelisseyev, Alexander

PY - 2018/11/1

Y1 - 2018/11/1

N2 - We studied the etching of surface of synthetic monocrystalline diamond by Fe nanoparticles. The diamond was grown in the Fe-Ni-C system by high pressure high temperature (HPHT) process. To produce the Fe nanoparticles we used the technique of reduction of ferric chloride by hydrogen. Our experiment demonstrated only a normal type of etching resulted in formation of a highly porous surface on the diamond crystal: such surface consists of numerous channels oriented normally to a surface plane. Different faces of a diamond sample were etched simultaneously. Micromorphology of the etched surface was characterized by atomic-force microscopy. It was shown that after etching the average roughness was 20.8 nm in comparison with the 1.64 nm for the as-grown diamond before treatment. We propose that the highly porous surface obtained by this technique can be used when producing diamond-metal composites or as a catalytic support for fixing of metal micro- and nanoparticles inside the etched channels.

AB - We studied the etching of surface of synthetic monocrystalline diamond by Fe nanoparticles. The diamond was grown in the Fe-Ni-C system by high pressure high temperature (HPHT) process. To produce the Fe nanoparticles we used the technique of reduction of ferric chloride by hydrogen. Our experiment demonstrated only a normal type of etching resulted in formation of a highly porous surface on the diamond crystal: such surface consists of numerous channels oriented normally to a surface plane. Different faces of a diamond sample were etched simultaneously. Micromorphology of the etched surface was characterized by atomic-force microscopy. It was shown that after etching the average roughness was 20.8 nm in comparison with the 1.64 nm for the as-grown diamond before treatment. We propose that the highly porous surface obtained by this technique can be used when producing diamond-metal composites or as a catalytic support for fixing of metal micro- and nanoparticles inside the etched channels.

KW - Atomic force microscopy

KW - Etching channels

KW - Fe nanoparticles

KW - Surface micromorphology

KW - Synthetic HPHT monocrystalline diamond

UR - http://www.scopus.com/inward/record.url?scp=85047391397&partnerID=8YFLogxK

U2 - 10.1016/j.ijrmhm.2018.05.011

DO - 10.1016/j.ijrmhm.2018.05.011

M3 - Article

AN - SCOPUS:85047391397

VL - 76

SP - 12

EP - 15

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

SN - 0958-0611

ER -