Tribological properties of Mo-S-C coating deposited by pulsed d.c. magnetron sputtering
Transition metal dichalcogenides such as MoS2 are widely used as solid lubricants for vacuum applications. On the other hand, diamond-like carbon coatings exhibit excellent sliding properties in the ambient environment. Our Mo-S-C coatings deposited by pulsed d.c. sputtering combine both structures...
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Published in | Wear Vol. 480-481; p. 203939 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
15.09.2021
Elsevier Science Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | Transition metal dichalcogenides such as MoS2 are widely used as solid lubricants for vacuum applications. On the other hand, diamond-like carbon coatings exhibit excellent sliding properties in the ambient environment. Our Mo-S-C coatings deposited by pulsed d.c. sputtering combine both structures to obtain stable properties regardless of the testing conditions. The coatings were studied using HR-TEM and Raman spectroscopy, revealing amorphous nature of the coating. The tribological properties were evaluated by pin-on-disc method. The results showed high lubrication ability in all the testing conditions. HR-TEM and Raman spectroscopy were employed to show the structural characteristics of the wear traces. Our results indicate that the low-friction effect should be attributed to carbon structure re-arrangement since expected wear-induced MoS2 formation was not observed.
•Mo-S-C coatings were deposited by pulsed d.c. sputtering from C and MoS2 targets.•The Mo-S-C coatings were studied using HR-TEM and Raman spectroscopy.•The tribological properties were evaluated from the room temperature up to 200 °C.•Friction coefficients lower than 0.03 for all the testing conditions were observed.•Low-friction effect was predominantly attributed to carbon bonds re-arrangement. |
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ISSN: | 0043-1648 1873-2577 |
DOI: | 10.1016/j.wear.2021.203939 |