The influence of selected PVD coatings on fretting wear in a clamped joint based on the example of a rail vehicle wheel set

Kowalski, Sławomir

doi:10.17531/ein.2018.1.1

Cited by 10 publications

(10 citation statements)

References 14 publications

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“…Figure 9 shows the XPS spectra taken on the surface of the wear scars after the sliding tests at RT and 400 • C. The intensity ratio between the XPS signal intensity related to the a-C:H:Si coating (convolution of the C-C sp 2 and sp 3 peaks) and the intensity of the peak corresponding to C-O, C=O, etc., bonds is higher for a-C:H:Si than for the Al 2 O 3 /a-C:H:Si coating. The C-C sp 2 The stronger peak at 531.6 eV after the heating of a-C:H:Si at 400 °C can be observed in contrast to the Al2O3/a-C:H:Si coating. Closely spaced spin-orbit components (Δ = 0.63 eV) formed an asymmetrical Si 2p peak at 100.5-100.6 eV, which corresponds to Si-C bonds Si 4+ (SiO 2 )) [46].…”

Section: Raman and Xps Analysesmentioning

confidence: 98%

“…Carbon-based coatings have wide industrial applications (aerospace, automotive, machine tools, medical implants, etc. [1,2]) owing to their low coefficient of friction (COF) for different types of friction pairs, good mechanical properties, and chemical inertness. The challenge is that these properties should be retained during intensive use of such coatings under aggressive conditions (temperature, atmosphere, irradiation, etc.…”

Section: Introductionmentioning

confidence: 99%

“…The sp 2 and sp 3 bonds play a key role in the unique mechanical and tribological properties of DLC and ta-C coatings. The crucial parameters are the sp 3 content, clustering and orientation of the sp 2 phase, cross-sectional nanostructures, and hydrogen content [6].…”

Section: Introductionmentioning

confidence: 99%

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High-Temperature Tribological Performance of Al2O3/a-C:H:Si Coating in Ambient Air

et al. 2021

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The study investigates thermal stability and high temperature tribological performance of a-C:H:Si diamond-like carbon (DLC) coating. A thin alumina layer was deposited on top of the a-C:H:Si coating to improve the tribological performance at high temperatures. The a-C:H:Si coating and alumina layer were prepared using plasma-activated chemical vapour deposition and atomic layer deposition, respectively. Raman and X-ray photoelectron spectroscopy were used to investigate the structures and chemical compositions of the specimens. The D and G Raman peaks due to sp2 bonding and the peaks corresponding to the trans-polyacetylene (t-Pa) and sp bonded chains were identified in the Raman spectra of the a-C:H:Si coating. Ball-on-disc sliding tests were carried out at room temperature and 400 °C using Si3N4 balls as counter bodies. The a-C:H:Si coating failed catastrophically in sliding tests at 400 °C; however, a repeatable and reproducible regime of sliding with a low coefficient of friction was observed for the Al2O3/a-C:H:Si coating at the same temperature. The presence of the alumina layer and high stress and temperature caused structural changes in the bulk a-C:H:Si and top layers located near the contact area, leading to the modification of the contact conditions, delivering of extra oxygen into the contact area, reduction of hydrogen effusion, and suppression of the atmospheric oxidation.

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Section: Raman and Xps Analysesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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High-Temperature Tribological Performance of Al2O3/a-C:H:Si Coating in Ambient Air

et al. 2021

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“…Currently, there is a dynamic development of coating production processes using various surface engineering technologies, such as: plasma spraying [39], HVOF spraying [40], ESD method [33], laser cladding [43], laser alloying [32], physical vapor deposition [12], chemical vapor deposition [8], which mainly perform protective and anti-wear functions.…”

Section: Introductionmentioning

confidence: 99%

Operational tests of coating systems in military technology applications

Radek¹,

Michalski²,

Mazurczuk³

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

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The paper presents an analysis of the functional operational properties of multilayer coatings for use in military technology in the field of masking. The developed coating systems are characterized by operational innovation due to their small thickness when compared to those currently used by global defence contractors while maintaining the re-emission coefficient required for camouflage to be effective in the optical range. Their service life and durability were assessed in terms of functional properties based on measurements of attenuation coefficients, surface geometric structure, adhesion, specular gloss and colour parameters. The tests were carried out for coating systems fabricated in five variants: a two-layer paint system (SP1), a threelayer paint system (SP2), a laser-modified three-layer paint system (SP3) and a four-layer paint system in two variants (SP4 and SP5), with the former being modified with carbon nanotubes and the later − with spherical iron. Coating systems are characterized by low roughness and good adhesion and have appropriate attenuation coefficients for radar waves. Due to their operational properties, the developed coating systems can be used on armaments and military equipment.

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“…The first generation coatings featured TiC [ 2 ], TiN [ 3 , 4 ], ZrN [ 5 ] and Al 2 O 3 [ 6 , 7 ] as the hard coatings, and were applied to improve the material durability in aggressive environments. The superior performances of the coated tools improve their application in manufacturing processes, such as drilling, turning, boring and as a protective layer on dies.…”

Section: Introductionmentioning

confidence: 99%

Performance of MoS2/Zr Composite Coatings at Different Deposition Temperatures

Song

Sun²,

Zhao³

et al. 2021

Materials

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The properties of the MoS2/Zr coatings can be significantly affected by the deposition temperature. In this study, the MoS2/Zr composite coatings were fabricated on the cemented carbide surface, utilizing the duplex deposition technology at various deposition temperatures. The effects of deposition temperature on the mechanical and friction properties of the MoS2/Zr coatings were systematically studied. Results exhibited that as the deposition temperature increased, the adhesion force increased first and then decreased, and the coating thickness and micro-hardness gradually increased. Dry sliding tests against a hardened steel ring showed that the tribological behaviors and wear mechanisms of the MoS2/Zr coatings varied with deposition temperature, which were due to the changing mechanical properties of coatings caused by the temperature. The coatings deposited at a temperature of 180 °C and 200 °C possessed preferable comprehensive mechanical and tribological properties.

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The influence of selected PVD coatings on fretting wear in a clamped joint based on the example of a rail vehicle wheel set

Abstract: Science and Technology article citation info: (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl

Cited by 10 publications

References 14 publications

High-Temperature Tribological Performance of Al2O3/a-C:H:Si Coating in Ambient Air

High-Temperature Tribological Performance of Al2O3/a-C:H:Si Coating in Ambient Air

Operational tests of coating systems in military technology applications

Performance of MoS2/Zr Composite Coatings at Different Deposition Temperatures

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