Structural reorientation and compaction of porous MoS2 coatings during wear testing

Krauß S, Seynstahl A, Tremmel S, Meyer B, Bitzek E, Göken M, Yokosawa T, Zubiri BA, Spiecker E, Merle B (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Wear Elsevier

Book Volume: 500-501

Article Number: 204339

DOI: 10.1016/j.wear.2022.204339

Abstract

Industrial upscaling frequently results in a different coating microstructure than the laboratory prototypes presented in the literature. Here, we investigate the wear behavior of physical vapor deposited (PVD) MoS2 coatings: A dense, nanocrystalline MoS2 coating, and a porous, prismatic-textured MoS2 coating. Transmission electron microscopy (TEM) investigations before and after wear testing evidence a crystallographic reorientation towards a basal texture in both samples. A basal texture is usually desirable due to its low-friction properties. This favorable reorientation is associated to a tribological compaction of the porous specimens. Following running-in, sliding under high contact pressure ultimately leads to a wear rate as small as for an ideal grown bulk MoS2 single crystal grown by chemical vapor deposition (CVD). This suggests that the imperfections of industrial grade MoS2 coatings can be remediated by a suitable pretreatment.

Authors with CRIS profile

Sebastian Krauß Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Bernd Meyer Professur für Computational Chemistry Erik Bitzek Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Tadahiro Yokosawa Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Benoit Merle Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Additional Organisation(s)

Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM) Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Related research project(s)

In-situ Characterization of Nanomaterials with Electrons, X-rays/Neutrons and Scanning Probes (GRK 1896) Oct. 1, 2013 - Sept. 30, 2022

Involved external institutions

Universität Bayreuth DE Germany (DE)

How to cite

APA:

Krauß, S., Seynstahl, A., Tremmel, S., Meyer, B., Bitzek, E., Göken, M.,... Merle, B. (2022). Structural reorientation and compaction of porous MoS2 coatings during wear testing. Wear, 500-501. https://doi.org/10.1016/j.wear.2022.204339

MLA:

Krauß, Sebastian, et al. "Structural reorientation and compaction of porous MoS2 coatings during wear testing." Wear 500-501 (2022).

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