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- W4285810010 abstract "To improve the long-term tribological properties of precision moving parts in aerospace, MoS 2 -Ti film was applied on a low-density micro-textured surface of the most commonly used 9Cr18 steel. The 1.0, 1.5, 2.0 and 3.0 % dimple densities of micro-textured surfaces were produced by an Nd: YAG femtosecond pulse laser system. The effects of different micro-textured densities surface with MoS 2 -Ti films on friction properties and wear mechanisms were investigated. Tribological results showed that all the micro-textured surfaces with MoS 2 -Ti films had a lower friction coefficient and wear rate than the un-textured surfaces with MoS 2 -Ti films. The wear performance was enhanced by increasing the density of the micro-textured surface. The friction coefficient and wear rate after 3.6 × 10 5 lap rotation were reduced to below 0.018 and <1.0 × 10 −7 mm 2 /N•m, respectively, when the density of micro-texture was 3.0 %. It was found that the friction coefficient and wear rate increased with increasing sliding laps, but the 3.0 % density surface with MoS 2 -Ti film after a lap rotation of 9.0 × 10 5 still had a lower wear rate than the un-textured surface, indicating an excellent long-term wear resistance. The function of micro-textures is not only to capture wear debris and store lubrication films but also to form a moderate transfer layer on the friction pair, all of which could help to prolong the wear life of MoS 2 -Ti films. • Different densities of micro-textured 9Cr18 surfaces were coated with MoS 2 -Ti (11 %) films. • Micro-textured surface of density 3 % has a prominent positive impact on the tribological properties. • Titanium introduced to the MoS 2 film was totally oxidized during the film's deposition process. • The MoS 2 film evolved to MoO 3 and MoS 2- x during long-term friction in vacuum. • Wear mechanism changed from plow of un-textured to adhesive wear of micro-textured density of 1.5 %." @default.
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- W4285810010 date "2022-09-01" @default.
- W4285810010 modified "2023-10-16" @default.
- W4285810010 title "Effect of a micro-textured surface with deposited MoS2-Ti film on long-term wear performance in vacuum" @default.
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- W4285810010 doi "https://doi.org/10.1016/j.surfcoat.2022.128722" @default.
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