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Effective usage of 2D MXene nanosheets as solid lubricant – Influence of contact pressure and relative humidity

Titelangaben

Marian, Max ; Song, Gui Cheng ; Wang, Bo ; Fuenzalida, Victor M. ; Krauß, Sebastian ; Merle, Benoit ; Tremmel, Stephan ; Wartzack, Sandro ; Yu, Jinhong ; Rosenkranz, Andreas:
Effective usage of 2D MXene nanosheets as solid lubricant – Influence of contact pressure and relative humidity.
In: Applied Surface Science. Bd. 531 (2020) . - 147311.
ISSN 1873-5584
DOI: https://doi.org/10.1016/j.apsusc.2020.147311

Abstract

Newly emerging Ti3C2Tx–nanosheets (MXenes) have attracted considerable attention in energy storage, catalysis and, more recently, tribology. MXene nanosheets are characterized by a weakly-bonded multi-layered structure with self-lubricating ability, making them a suitable candidate for solid lubrication. This contribution aims at addressing for the first time their application in higher loaded steel/steel dry sliding contacts by investigating the influence of contact pressure and relative humidity on friction and wear performance. Compared to the uncoated reference, a 2.3-fold friction reduction and a 2.7-fold reduction of the wear volume were verified for MXene-coated specimens for moderate contact pressures and low relative humidity. This was due to the in-situ formation of a compacted tribo-film consisting of densified Ti3C2Tx–nanosheets. In contrast, too high pressures induced a partial rupture of the wear-protecting tribo-layer, thus reducing its beneficial effects. Additionally, no beneficial effects regarding friction and/or wear were found at higher relative humidities, which was correlated with the expansion of the basal spacings. Therefore, this study summarizes favorable operating conditions for MXene nanosheets when used as solid lubricant to improve friction and/or wear thus making them excellent candidates for advanced, next-generation solid lubricants.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: MXene-nanosheets; Contact pressure; Relative humidity; Friction reduction; Wear reduction
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Konstruktionslehre und CAD
Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige ProfessorInnen > Lehrstuhl Konstruktionslehre/CAD - Univ.-Prof. Dr.-Ing. Frank Rieg
Profilfelder > Advanced Fields > Neue Materialien
Profilfelder > Emerging Fields > Energieforschung und Energietechnologie
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Emerging Fields
Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige ProfessorInnen
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 14 Sep 2020 10:02
Letzte Änderung: 07 Nov 2023 10:47
URI: https://eref.uni-bayreuth.de/id/eprint/56940