Influence of the bias-voltage, the argon pressure and the heating power on the structure and the tribological properties of HiPIMS sputtered MoSx films

Tillmann, Wolfgang; Wittig, Alexandra; Stangier, Dominic; Moldenhauer, Henning; Thomann, Carl-Arne; Debus, J.; Aurich, Daniel; Brümmer, Andreas

doi:10.1016/j.surfcoat.2020.125358

Cited by 22 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Concerning the HiPIMS films, a low averaged friction coefficient is achieved for films with a high initial (100) orientation. Accordingly, it seems that, also, the dense microstructure of the HiPIMS films allows tribologically stressed surface areas to change their orientation along the basal (002) direction, as shown in a previous study [37]. Furthermore, an initial (100)-orientation may enhance this process.…”

Section: Mechanical and Tribological Propertiessupporting

confidence: 58%

“…Coatings 2020, 10, x FOR PEER REVIEW 8 of 17 resputtering for peak current densities above a threshold value, but also by a densification of the film resulting from a high bias-voltage. The latter aspect has been shown within the analysis of the SEM images and was observed in MoSx [37] and MoS2-Ti films [19].…”

Section: Structural Properties Of the Mos X Filmsmentioning

confidence: 57%

“…Thus, the tribological properties, like the wear resistance of the film grown by HiPIMS can be improved [34]. Up to now, mainly composite coatings were grown by the HiPIMS method, for example (Cr 1-x Al x )N+MoS y [35] and pure MoS x HiPIMS coatings [36,37] have only been rarely studied. For MoS x thin films grown in HiPIMS mode, an increase of the bias-voltage leads to a more pronounced (100) orientation accompanied by an decrease of the friction coefficient [37].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Controlling the Structural, Mechanical and Frictional Properties of MoSx Coatings by High-Power Impulse Magnetron Sputtering

et al. 2020

Self Cite

View full text Add to dashboard Cite

Tribology, as the science and technology of interacting surfaces, typically relies on liquid lubricants which reduce friction and wear. For environmentally friendly tribological purposes and applications requiring a liquid-free performance, solid lubricants, such as MoS2 coatings, play an essential role. It is crucial to understand the interplay between the parameters of the coating synthesis and the characteristics of the coating. The impact of the deposition parameters on the structural, mechanical and frictional properties of MoSx thin films, which are synthesized by high-power impulse magnetron sputtering, are studied. The morphology, topography and stoichiometry (2.02 < x < 2.22) of the films are controlled by, in particular, the bias-voltage and heating power applied during the sputtering process. In combination with a low pulse frequency the hardness and elastic stiffness of the MoSx films are enhanced up to 2 and 90 GPa, respectively. This enhancement is assigned to a shortening of the Mo-S bonding lengths and a strengthening in the interatomic coupling as well as to a formation of small-sized crystallites at the surface. The friction coefficient reduces to µ = 0.10 for films with an initial (100) orientation and the mean roughness of the MoSx films decreases below 15 nm by shortening the cathode pulses.

show abstract

Section: Mechanical and Tribological Propertiessupporting

confidence: 58%

Section: Structural Properties Of the Mos X Filmsmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Controlling the Structural, Mechanical and Frictional Properties of MoSx Coatings by High-Power Impulse Magnetron Sputtering

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Research in this area has looked for ways to increase the wear resistance of solid lubricant coatings at different contact loads and over a relatively wide range of temperatures and air humidity. Moreover, researchers have sought to find fundamentally new forms/structural states that can lead to new properties [11][12][13][14]. The testing temperature range has been, as a rule, between room temperature and~500 • C. In most cases, coatings were applied through ion (magnetron) sputtering [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, researchers have sought to find fundamentally new forms/structural states that can lead to new properties [11][12][13][14]. The testing temperature range has been, as a rule, between room temperature and~500 • C. In most cases, coatings were applied through ion (magnetron) sputtering [10][11][12]. The structural and chemical state properties of these coatings have been achieved through pulsed laser deposition (PLD) [15][16][17] and liquid-based electrodeposition [18].…”

Section: Introductionmentioning

confidence: 99%

Reactive Pulsed Laser Deposition of Clustered-Type MoSx (x ~ 2, 3, and 4) Films and Their Solid Lubricant Properties at Low Temperature

et al. 2020

View full text Add to dashboard Cite

We studied the tribological properties of amorphous molybdenum sulfide (MoSx) thin-film coatings during sliding friction in an oxidizing environment at a low temperature (−100 °C). To obtain films with different sulfur contents (x ~ 2, 3, and 4), we used reactive pulsed laser deposition, where laser ablation of the Mo target was performed in H2S at various pressures. The lowest coefficient of friction (0.08) was observed during tribo-testing of the MoS3 coating. This coating had good ductility and low wear; the wear of a steel counterbody was minimal. The MoS2 coating had the best wear resistance, due to the tribo-film adhering well to the coating in the wear track. Tribo-modification of the MoS2 coating, however, caused a higher coefficient of friction (0.16) and the most intensive wear of the counterbody. The MoS4 coating had inferior tribological properties. This study explored the mechanisms of possible tribo-chemical changes and structural rearrangements in MoSx coatings upon contact with a counterbody when exposed to oxygen and water. The properties of the tribo-film and the efficiency of its transfer onto the coating and/or the counterbody largely depended on local atomic packing of the nanoclusters that formed the structure of the amorphous MoSx films.

show abstract

MoS₂‐Dünnschichten für unsynchronisierte, trockenlaufende Schraubenmaschinen

Aurich

Wittig²,

Stangier³

et al. 2021

Vak Forsch Prax

Self Cite

View full text Add to dashboard Cite

ZusammenfassungUnsynchronisierte, trockenlaufende Schraubenmaschinen weisen ein großes Potential auf, eine ressourcenschonende Alternative zu konventionellen Bauformen von Schraubenmaschinen zu liefern. Durch die Einsparung eines Synchronisationsgetriebes und den Verzicht auf ein flüssiges Schmiermittel ergeben sich ökonomische und ökologische Vorteile, da der Material‐ und Energieeinsatz reduziert werden. Die Reinheit des Prozessgases wird erhöht und die Umweltbelastung wird somit minimiert. Vakuumbeschichtungsverfahren stellen eine der Schlüsseltechnologien zur Realisierung einer unsynchronisierten, trockenlaufenden Schraubenmaschine dar. Durch die endkonturnahe Beschichtung und die Möglichkeit, die strukturellen Eigenschaften der Beschichtung gezielt zu verändern, lassen sich die Dünnschichten optimal konditionieren. Durch den Einsatz von MoS2‐Dünnschichten als Vertreter der Festschmierstoffe können die Reibeigenschaften der Schraubenmaschinen verbessert werden, sodass auch an dieser Stelle ein großes Potential vorliegt, die Reibung und somit den Energieeinsatz zu reduzieren.

show abstract

Influence of the bias-voltage, the argon pressure and the heating power on the structure and the tribological properties of HiPIMS sputtered MoSx films

Cited by 22 publications

References 23 publications

Controlling the Structural, Mechanical and Frictional Properties of MoSx Coatings by High-Power Impulse Magnetron Sputtering

Controlling the Structural, Mechanical and Frictional Properties of MoSx Coatings by High-Power Impulse Magnetron Sputtering

Reactive Pulsed Laser Deposition of Clustered-Type MoSx (x ~ 2, 3, and 4) Films and Their Solid Lubricant Properties at Low Temperature

MoS₂‐Dünnschichten für unsynchronisierte, trockenlaufende Schraubenmaschinen

Contact Info

Product

Resources

About

Influence of the bias-voltage, the argon pressure and the heating power on the structure and the tribological properties of HiPIMS sputtered MoSx films

Cited by 22 publications

References 23 publications

Controlling the Structural, Mechanical and Frictional Properties of MoSx Coatings by High-Power Impulse Magnetron Sputtering

Controlling the Structural, Mechanical and Frictional Properties of MoSx Coatings by High-Power Impulse Magnetron Sputtering

Reactive Pulsed Laser Deposition of Clustered-Type MoSx (x ~ 2, 3, and 4) Films and Their Solid Lubricant Properties at Low Temperature

MoS2‐Dünnschichten für unsynchronisierte, trockenlaufende Schraubenmaschinen

Contact Info

Product

Resources

About

MoS₂‐Dünnschichten für unsynchronisierte, trockenlaufende Schraubenmaschinen