Tribological Performance of Gas Tungsten Arc Welded Dissimilar Joints of sDSS 2507/N50 Steel

Maurya, Anup Kumar; Patnaik, Amar; Pandey, Shailesh M.; Chhibber, Rahul; Pandey, Chandan

doi:10.1007/s11665-023-08683-x

Cited by 6 publications

(1 citation statement)

References 39 publications

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“…In this way, the laser cladding of carbides and borides of titanium, niobium, molybdenum, tungsten, and vanadium in combination with thermal treatments of the coated surface are proposed to repair worn pieces [46,47], digger teeth, hammers, kitchen knives, liner plates, crushers, loose-soil plow shovels, automobile parts, etc. Another frequent procedure to enhance surface resistance is thermal treatment, by heating or by cryogenic freezing, which modifies the microstructure of the treated material [48][49][50][51][52]. On the other hand, a more recent route of enhancing tribological performance-the use of textures on surfaces inspired by patterns of nature, e.g., grooves in shells-has demonstrated the promotion of the self-compensation of solid lubricating film [53].…”

Section: Discussionmentioning

confidence: 99%

Friction Coefficient Dynamics of Tribological Coatings from Engine Lubricants: Analysis and Interpretation

Domínguez García,

Béjar Gómez,

Maya Yescas

et al. 2023

Coatings

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Even today, there is no full understanding of the relationship between the physical, chemical, and mechanical properties and the behavior of the lubricating films formed in tribological systems. Most of the published scientific research measures and reports the overall values of friction and wear, but the information given via statistical signals in the tribological tests is, in general, dismissed, leaving a hole in the study of the dynamics of tribological systems. In this work, an experimental study of statistical friction data, coating characteristics, and tribological performance is carried out using a pin-on-disk tribometer to test some metallic samples coated with lubricant films under several experimental conditions. The results indicate that long deposition times at high deposition temperatures of coatings from engine oil develop low-friction intervals, which fall until 20% of the uncoated coefficient friction. However, an unexpected and unfavorable behavior of the coatings was observed for the short deposition times and high temperature. In these conditions, the developed friction profiles reached a maximum level of friction that was 20% more than the uncoated coefficient friction. Moreover, it was found that the proper analysis and interpretation of the statistical data, in combination with the characterization of the coatings, describes the dynamics of the interactions between the bodies in contact and reveals the transitions of the surfaces with non-homogeneous properties throughout their depth.

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