Properties of fullerene films obtained by high-kinetic-energy deposition on various surfaces

Khodorkovskii, M. A.; Murashov, S. V.; Шахмин, А. Л.; Артамонова, Т. О.; Rakcheeva, L. P.; Melnikov, Andrei G.

doi:10.1134/s1063784206070279

Cited by 3 publications

(7 citation statements)

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“…Проводя анализ результатов компьютерного моделирования, приведенных в данной статье, следует обратить внимание и на результаты натурного эксперимента, приведенного в работе [36]. Так, в [36] исследовалось осаждение фуллеренов C 60 импульсным сверхзвуковым молекулярным пучком (СМП) на подложки различных металлов и оксидов. Для формирования СМП использовались инертные газы аргон (Ar) и гелий (Не), которые обогащались фуллеренами C 60 , а затем СМП проходил через скиммер, «выделяющий осевую часть потока, за которой располагалась подложка» [36].…”

Section: таблицаunclassified

“…Так, в [36] исследовалось осаждение фуллеренов C 60 импульсным сверхзвуковым молекулярным пучком (СМП) на подложки различных металлов и оксидов. Для формирования СМП использовались инертные газы аргон (Ar) и гелий (Не), которые обогащались фуллеренами C 60 , а затем СМП проходил через скиммер, «выделяющий осевую часть потока, за которой располагалась подложка» [36]. В работе [36] не указано, под каким углом к СМП устанавливалась подложка.…”

Section: таблицаunclassified

“…Для формирования СМП использовались инертные газы аргон (Ar) и гелий (Не), которые обогащались фуллеренами C 60 , а затем СМП проходил через скиммер, «выделяющий осевую часть потока, за которой располагалась подложка» [36]. В работе [36] не указано, под каким углом к СМП устанавливалась подложка. Однако даже если СМП подавался по нормали к контактной поверхности подложки, ввиду неизбежной турбулизации СМП у какой-то части фуллеренов при контакте с подложкой вектор скорости был направлен под углом () к нормали, отличным от нуля.…”

Section: таблицаunclassified

“…Однако даже если СМП подавался по нормали к контактной поверхности подложки, ввиду неизбежной турбулизации СМП у какой-то части фуллеренов при контакте с подложкой вектор скорости был направлен под углом () к нормали, отличным от нуля. Таким образом, можно утверждать, что часть фуллеренов, образующих пленку C 60 [36], особенно фуллерены, находящиеся в периферийной зоне пленки, осаждались по механизму, схожему с тем, что описан в данной работе.…”

Section: таблицаunclassified

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The effect of the angle of «meeting» of fullerite C60 with a solid substrate on the deposition process

Суворов

Severiuchin

Vakhrushev

2020

PNRPU Mechanics Bulletin

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Carbon forms a large number of allotropic forms, one of which is fullerene. Fullerene is a convex closed polyhedron with carbon atoms at its vertices. The most common is fullerene, consisting of 60 carbon atoms and designated - C60. In turn, fullerenes are able to agglomerate, forming a molecular crystal - fullerite. In the interaction of fullerite C60 with a solid, it is possible to deposit on the surface of the body both whole fullerite and the fullerenes that form it. The interaction process in the C60 fullerite system - the substrate of a solid, and then on - the fullerite - substrate system - is multi-parameter. So, when modeling the interaction of fullerite with a substrate, the following were taken into account: the temperature of the system - 300, 700, 1150 K; the speed of fullerite movement is 0.005, 0.01, 0.02 Å / fs. In addition, in the study, we varied the angle between the fullerite velocity vector and the normal to the contact surface of the substrate, called the “meeting angle”. An iron crystal Fe (100) was modeled as a solid body substrate, as one of the most common structural materials. Fullerite C60 was in contact with the solid substrate with its face. Computer simulation of the process of contact of fullerite C60 with the substrate was carried out in the LAMMPS software package. The main result of this study is to determine the effect of the angle of “meeting” of C60 fullerite in contact with a solid substrate, which will significantly complement the overall picture of the process of C60 fullerite deposition. In turn, this can allow the creation of various films and wear-resistant coatings on the surface of materials.

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Section: таблицаunclassified

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The effect of the angle of «meeting» of fullerite C60 with a solid substrate on the deposition process

Суворов

Severiuchin

Vakhrushev

2020

PNRPU Mechanics Bulletin

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Ultra-thin carbon-based nanocomposite coatings for superior wear resistance under lubrication with nano-diamond additives

et al. 2016

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Ultra-thin carbon-based nanocomposite coatings comprised of graphite nanocrystals embedded in diamond-like carbon (DLC) matrix were deposited on stainless steel substrates by the C 60 ion beam method, as a wear protective coating. Increasing the C 60 irradiation energy and deposition temperature led to the formation of graphite nanocrystals with a size of less than 2 nm. The wear characteristics of the coatings were investigated in the presence of engine base oil with nanodiamond particle (NDP) additives that are commonly used to lower friction and wear. The nanocomposite coating deposited at 5 KeV, 300 ºC showed the highest sp 3 content and the best tribological characteristics. A minimum coefficient of friction of 0.07 and a wear rate of 1.8×10 -12 mm 3 /N·mm could be achieved which was lower than the best previously reported data considering that the contact pressure was greater than 1 GPa. Such a high wear resistance of the nanocomposite coating was attributed to their unique structure that simultaneously provided high hardness and elasticity while in contact with nano-diamond particles.known coating that has demonstrated outstanding usage as a protective coating because of its unique properties, such as extreme hardness, high thermal stability, high wear and corrosion resistance and low coefficient of friction (COF). 7,8 DLC coatings have been used for automotive components such as torque converters, fuel pumps, differential gears, piston rings and valve lifters. 9,10 Friction and wear mechanism of DLC coatings under lubrication condition and their interaction with various types of nano-additives for a wide range of applications has been DS2 specimen had a slightly higher hardness because of its higher sp 3 content. In the case of DS3 which was deposited at 300 °C, the hardness value was estimated to be approximately 46GPa. The higher hardness of DS3 specimen could be deduced from its higher sp 3 content compared with those of the DS1 and DS2 specimens. Friction and wear propertiesThe wear characteristics of the nanocomposite coatings were assessed by performing sliding tests with engine oil used as the lubricant in boundary lubrication conditions. Tests were also performed using bare stainless steel specimens for comparison. Moreover, to assess the effects of NDPs on the friction and wear behavior of the nanocomposite coatings, sliding tests were performed with and without the NDPs in the lubricant using both bare and coated specimens.The typical variation of COFs with respect to the sliding cycles for the bare and DS3 specimen with and without the NDPs in the lubricant is shown in Fig. 5. In the data, the tests conducted without the NDPs were indicated as "No NDP". As can be seen from the experimental results, the COF was relatively unstable at the initial stage of the sliding test which could be attributed to the initial surface roughness and deformation of the asperities. 23 The COF then became quite stable after ~2000 cycles. For all cases, the COF was below 0.2, which indicated that the sliding conditi...

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Growth of nanocomposite films from accelerated C₆₀ ions

Пуха¹,

Zubarev²,

Дроздов³

et al. 2012

J. Phys. D: Appl. Phys.

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A beam of accelerated C60 ions is used to deposit superhard (∼50 GPa) carbon films that exhibit high index plasticity (∼0.13–0.14) and high conductivity (up to 3000 S m−1). Transmission electron microscopy, Raman spectroscopy and x-ray photoelectron spectroscopy are subsequently used to study the microstructure and bond character of the deposited films. The films consist of textured graphite nanocrystals and diamond-like amorphous carbon (DLC). The graphene plane of the nanocrystals is aligned perpendicular to the film surface. It is shown that sp2 bonds dominate in the films. The percentage of sp3 bonds depends on the ion energy and the substrate temperature, and does not exceed 40%. The obtained results suggest that a new nanocomposite material consisting of oriented graphite nanocrystals reinforced by a DLC matrix is synthesized. A simple model is proposed to correlate the excellent mechanical properties with the observed structure.

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Properties of fullerene films obtained by high-kinetic-energy deposition on various surfaces

Cited by 3 publications

References 4 publications

The effect of the angle of «meeting» of fullerite C60 with a solid substrate on the deposition process

The effect of the angle of «meeting» of fullerite C60 with a solid substrate on the deposition process

Ultra-thin carbon-based nanocomposite coatings for superior wear resistance under lubrication with nano-diamond additives

Growth of nanocomposite films from accelerated C₆₀ ions

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Properties of fullerene films obtained by high-kinetic-energy deposition on various surfaces

Cited by 3 publications

References 4 publications

The effect of the angle of «meeting» of fullerite C60 with a solid substrate on the deposition process

The effect of the angle of «meeting» of fullerite C60 with a solid substrate on the deposition process

Ultra-thin carbon-based nanocomposite coatings for superior wear resistance under lubrication with nano-diamond additives

Growth of nanocomposite films from accelerated C60 ions

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Product

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Growth of nanocomposite films from accelerated C₆₀ ions