Journal Article

FZJ-2021-04829

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ti3C2T solid lubricant coatings in rolling bearings with remarkable performance beyond state-of-the-art materials

Marian, M. ; Feile, K. ; Rothammer, B. ; Bartz, M. ; Wartzack, S. ; Seynstahl, A. ; Tremmel, S. ; Krauß, S. ; Merle, B. ; Böhm, T.FZJ* ; Wang, B. ; Wyatt, B. C. ; Anasori, B. ; Rosenkranz, A. (Corresponding author)

2021
Elsevier Amsterdam [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/29274  doi:10.1016/j.apmt.2021.101202

Abstract: Two-dimensional (2D) transition metal carbides, nitrides, and carbonitrides, known as MXenes, are agrowing class of 2D materials, which offer great solid lubrication ability for low friction applications due totheir weakly bonded multi-layer structure and tribo-layer formation with self-lubricating characteristics. Todate, most studies have assessed their tribological response in basic laboratory tests. However, these tests donot adequately reflect the complex geometries, kinematics, and stresses present in machine components.Here, we aim at bridging this gap through assessment of the friction and wear performance of multi-layerTi3C2Tx MXene solid lubricant coatings used in rolling bearings. MXenes’ tribological response is comparedwith state-of-the art solid lubricant coatings, which include molybdenum disulfide (MoS2), tungsten-dopedhydrogenated amorphous carbon (a-C:H:W), and hydrogen-free, more graphite-like amorphous carbon (a-C).Multi-layer Ti3C2Tx MXene coatings reduce wear on the bearing washers by up to 94 %, which can beattributed to the transfer of the lubricious MXene nano-sheets to secondary tribo-contacts of the bearing.While the frictional torque of all solid lubricant coatings is similar during steady-operation, the MXenecoated bearings extend the service life by 30 % and 55 % compared to MoS2 and DLC, respectively. This2 contribution demonstrates the ability of MXene solid lubricant coatings to outperform state- of-the-art solidlubricants in dry-running machine components such as rolling bearings.

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Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IEK-11)

Research Program(s):

1. 1232 - Power-based Fuels and Chemicals (POF4-123) (POF4-123)

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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