Effect of a-MoS2 and a-MoS3 nanophases on tribological properties of nanocomposite coatings containing diamond-like carbon
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-01-01 |
| Journal | Strengthening Technologies and Coatings |
| Authors | D.V. Fominsky, M.V. Demin, M.D. Gritskevich, V.A. Kasyanenko, V.Yu. Fominsky |
Abstract
Section titled āAbstractāUsing the modes of reactive and vacuum pulsed laser deposition, nanocomposite coatings consisting of alternating layers of amorphous molybdenum sulfide (a-MoSx) and diamond-like carbon (a-C) were created. For solid lubricating layers, the compositions a-MoS2 and a-MoS3 were chosen. The study of tribological properties was carried out according to the method of sliding a ball on a disk in very different environmental conditions: humid air, dry air at +25 Ā°C and -100 Ā°C. A significant effect of the composition of the a-MoSx phase on the friction and wear of the nanocomposite coatings in humid air and at low temperature has been established. The use of the a-MoS3 polymer-like phase provided better antifriction properties and increased durability of the coatings. In dry air, the coatings with the a-MoS2 nanophase exhibited a lower coefficient of friction than those with a-MoS3 with approximately the same wear resistance between them. The results of the study of tribo-induced changes in coatings by micro-Raman spectroscopy are presented.