Journal
PHYSICS OF ATOMIC NUCLEI
Volume 85, Issue 11, Pages 1816-1820Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063778822090307
Keywords
thin films; coefficient of friction; wear; amorphous structure
Categories
Funding
- Russian Science Foundation [22-29-00197]
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Thin-film coatings with laminar WS2 films and nanometer-thick carbon films were created using reactive pulsed laser deposition. The growth of the graphite-like state was activated by depositing carbon films (g-C) on the surface of nickel or titanium films between WS2 and g-C layers. It was found that the WS2/Ni/g-C/WS2 coating exhibited a very low coefficient of friction (less than 0.013) in dry air without lubrication, while the coating with a titanium interface film did not possess such properties. The structural state of the coating before and after the tribotest was monitored using micro-Raman spectroscopy (MRS), and possible causes for the different behavior of the coatings with the chosen metal film catalysts were revealed.
Model thin-film coatings containing laminar WS2 films and nanometer-thick carbon films are created by the reactive pulsed laser deposition technique. To activate the growth of the graphite-like state, the carbon films (g-C) were deposited on the surface of nickel or titanium films formed between WS2 and g-C layers. It is found that the WS2/Ni/g-C/WS2 coating is apt to manifest a very low coefficient of friction (less than 0.013) in tests in dry air without lubrication. The coating with a titanium interface film does not possess such properties. The structural state of the coating before and after the tribotest was monitored by micro-Raman spectroscopy (MRS). Possible causes of the different behavior of coatings with the chosen metal film catalysts are revealed.
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