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Structure and tribological behavior of nanocomposite C-Ti-WSe x coatings |
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| Authors: | S N Grigoriev R I Romanov V Yu Fominski M A Volosova E A Zhukova |
| Affiliation: | 1. Moscow State University of Technology STANKIN, Vadkovskii per. 1, Moscow, 127994, Russia 2. National Research Nuclear University MEPhI, Kashirskoe sh. 31, Moscow, 115409, Russia 3. Training and Technical Center for Nanotechnologies, Nano- and Microsystem Engineering, Bauman Moscow State Technical University, Vtoraya Baumanskaya ul. 5, Moscow, 105005, Russia |
| Abstract: | Nanocomposite thin C-Ti-WSe x coatings, which contain antifriction (WSe x and amorphous carbon a-C) and hard (β-WC and TiC) components, are produced by pulsed laser deposition. In order to improve the tribological characteristics of the WSe x phase and to transform the structural state of the a-C matrix, alloying with titanium is used. The characteristics of the coatings are determined using the sliding of a steel ball at an increased humidity. A comparison of the characteristics of a composite C-Ti-WSe x coating and a carbon coating alloyed with titanium (a-C(Ti)) shows that the modification of the a-C matrix by introducing the WSe x phase leads to an increase in the coefficient of friction from 0.05 to 0.2; the wear of the composite coating is approximately six times higher than that of the a-C(Ti) coating. Possible solutions for improving the tribological characteristics of the composite C-Ti-WSe x coating in humid air are considered. |
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