Microstructure, mechanical properties and tribological behavior of magnetron-sputtered mos2 solid lubricant coatings deposited under industrial conditions

Seynstahl A, Krauß S, Bitzek E, Meyer B, Merle B, Tremmel S (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Coatings MDPI

Book Volume: 11

Article Number: 455

Journal Issue: 4

DOI: 10.3390/coatings11040455

Abstract

Depositing MoS2 coatings for industrial applications involves rotating the samples during the PVD magnetron sputtering process. Here, we show that a 3-fold substrate rotation, along a large target–substrate distance given by the deposition unit, introduces porosity inside the coatings. The mechanical properties and wear behavior strongly correlate with the degree of porosity, which, in turn, depends on the temperature and the rotational speed of the substrate. Ball-on-disk tests and nanoindentation wear experiments show a consistent change in tribological behavior; first, a compaction of the porous structure dominates, followed by wear of the compacted material. Compaction was the main contributor to the volume loss during the running-in process. Compared to a dense coating produced without substrate rotation, the initially porous coatings showed lower hardness and a distinct running-in behavior. Tribological lifetime experiments showed good lubrication performance after compaction.

Authors with CRIS profile

Sebastian Krauß Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Erik Bitzek Professur für Datenbasierte Materialmodellierung Bernd Meyer Professur für Computational Chemistry Benoit Merle Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Additional Organisation(s)

Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM) Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Related research project(s)

SPP 2074 Fundamental multiscale investigations for improved calculation of the service life of solid lubricated rolling bearings April 1, 2019 - March 31, 2022

Involved external institutions

Universität Bayreuth DE Germany (DE)

How to cite

APA:

Seynstahl, A., Krauß, S., Bitzek, E., Meyer, B., Merle, B., & Tremmel, S. (2021). Microstructure, mechanical properties and tribological behavior of magnetron-sputtered mos2 solid lubricant coatings deposited under industrial conditions. Coatings, 11(4). https://doi.org/10.3390/coatings11040455

MLA:

Seynstahl, Armin, et al. "Microstructure, mechanical properties and tribological behavior of magnetron-sputtered mos2 solid lubricant coatings deposited under industrial conditions." Coatings 11.4 (2021).

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