Specific features of reactive pulsed laser deposition of nanocomposite Mo-S-C-H solid lubricant thin-film coatings. // Nanomaterials. – 2020. – Vol.10. – P.2456–2580. (WoS, Scopus, Q1)

Fominski, V.; Fominski, D.; Romanov, R.; Gritskevich, M.; Demin, M.; Shvets, P.; Maksimova, K.; Goikhman, A.

Авторы: Fominski V., Fominski D., Romanov R., Gritskevich M., Demin M., Shvets P., Maksimova K., Goikhman A.
Журнал: Nanomaterials
Том: 10
Номер: 2456
Год издания: 2020
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
DOI: 10.3390/nano10122456
Аннотация: This work investigates the structure and chemical states of thin-film coatings obtained bypulsed laser codeposition of Mo and C in a reactive gas (H2S). The coatings were analysed for theirprospective use as solid lubricating coatings for friction units operating in extreme conditions. Pulsed laser ablation of molybdenum and graphite targets was accompanied by the effective interaction of the deposited Mo and C layers with the reactive gas and the chemical states of Mo- and C-containing nanophases were interdependent. This had a negative effect on the tribological properties of Mo–S–C–H nanocomposite coatings obtained at H2S pressures of 9 and 18 Pa, which were optimal for obtaining MoS2 and MoS3 coatings, respectively. The best tribological properties were found for the Mo–S–C–H_5.5 coating formed at an H2S pressure of 5.5 Pa. At this pressure, the x = S/Mo ratio in the MoSx nanophase was slightly less than 2, and the a-C(S,H) nanophase contained ~8 at.% Sand ~16 at.% H. The a-C(S,H) nanophase with this composition provided a low coefficient of friction(~0.03) at low ambient humidity and 22 ◦C. The nanophase composition in Mo–S–C–H_5.5 coatingdemonstrated fairly good antifriction properties and increased wear resistance even at −100 ◦C. Forwet friction conditions, Mo–S–C–H nanocomposite coatings did not have significant advantages inreducing friction compared to the MoS2 and MoS3 coatings formed by reactive pulsed laser deposition.Keywords: reactive pulsed laser deposition; solid lubricants; nanocomposite; molybdenum sulfides;coefficient of friction; wear; diamond-like carbon
Добавил в систему: Грицкевич Мария Дмитриевна

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Specific features of reactive pulsed laser deposition of nanocomposite Mo-S-C-H solid lubricant thin-film coatings. // Nanomaterials. – 2020. – Vol.10. – P.2456–2580. (WoS, Scopus, Q1)статья