Influences on the tribological behaviour of slip-rolling DLC-coatings

Klaffke, D.; Santner, E.; Spaltmann, D.; Woydt, Mathias

doi:10.1016/j.wear.2005.01.008

Cited by 20 publications

(10 citation statements)

References 5 publications

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“…The improvements of the life for the rolling contact fatigue by using DLC coating were reported in several papers [37][38][39]. The DLC coating improves the life of the rollers by more than two orders of magnitude compared with that of non-coated carburized steel, as Crack in Coating Layer shown in Fig.…”

Section: Research For Rolling Fatiguementioning

confidence: 69%

Diamond-Like Carbon Coating Applied to Automotive Engine Components

Kano

2014

Tribology Online

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The application of DLC coatings in the automotive industry has increased significantly both in terms of production volume and the kinds of applications involved. However, elucidation of the fundamental evaluation and mechanism of friction and wear properties for DLC coating are still far from sufficient level. This article discusses recent topics concerning the application of DLC coatings to automotive engine components and the related research for tribological issues of DLC coating. For the application to engine components, several typical examples are described. As an advanced one, the ta-C coated piston ring which has been applied recently to both the compression ring and the oil ring of a new mass-produced inline 3-cylinder compact gasoline engine is shown. The ta-C coated piston ring can reduce engine friction substantially compared with the conventional Cr plating ring. Additionally, the a-C:H coated aluminum piston which can be accomplished by shot-peening aluminum alloy substrate with fine tungsten particles shows exellent wear resistance. For the research, three issues of the super-low friction, the evaluation of adhesion strength and wear resistance and the rolling fatigue are discussed.

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Section: Research For Rolling Fatiguementioning

confidence: 69%

Diamond-Like Carbon Coating Applied to Automotive Engine Components

Kano

2014

Tribology Online

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“…Generally the measurement of weight loss is calculated using gravimetric measurement (2,26). However, in the present study due to significantly small …”

Section: Estimation Of Wear Rate Coefficientmentioning

confidence: 90%

Wear properties of diamond-like carbon coatings with silicon and chromium as adhesion layer using a high frequency reciprocating rig

Maiti

Mills

2017

Proceedings of the Institution of Mechanical Engineers, Part J:

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The application of Diamond-like-carbon coatings (DLC) to bearing surfaces is widespread from machining to bio-implants and has resulted in significant study of coating properties. The aim of this investigation was to determine the performance of two diamond-like-carbon coatings, using Chromium and Silicon as adhesion layers. Linear reciprocating wear tests were carried out at room temperature using an AISI 440C steel ball reciprocating against the DLC coated metal substrate. The performance of the coatings under different contact pressures (500 to 3000 MPa); peak sliding velocities (28 to 378 mm/s); and stroke length, (1.5 to 4 mm). An electric resistance measurement was used to monitor coating failure owing to the dielectric nature of the tested coatings.An increase in contact pressure resulted in a decrease in number of cycles to failure for both the coatings. However, the number of cycles to failure increased proportionally with sliding speed. In addition, artifacts on the coating and blister formation generated coating debris which acted as a third body during the wear process. The debris caused complete delamination of the coatings initially at the ends of the wear scar. The Silicon adhesion layer coating samples were found to provide a greater resistance to failure due to it being thicker, harder, and more elastic as compared to samples having a Chromium adhesion layer.

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“…It has been demonstrated that coatings produced by physical vapor deposition (PVD) may withstand higher shear stress levels during the rolling phase than coatings produced by chemical vapor deposition (CVD) or thermal spray [20][21][22][23][24][25][26][27]. TiN, TiAlN, TiC, CrN, Cu, and diamond-like carbon (DLC) coatings, produced by PVD [28][29][30][31], have already been studied in rolling-contact fatigue (RCF) tests improving the lifetime of the components [21][22][23][32][33][34]. DLC and carbon nitride (CN) coatings are considered good candidates for its use in rolling components as they provide low friction and high wearing resistance [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Tribological Behavior of Rolling Bearings by Applying a Multilayer ZrN/ZrCN Coating

et al. 2019

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This paper focuses on the tribological behaviour of ZrN/ZrCN coating on bearing steel substrates DIN 17230, 100Cr6/1.3505. Coatings are applied at room temperature processes by means of Cathodic Arc Evaporation (CAE), a kind of Physical Vapor Deposition (PVD) technique. In order to achieve a satisfactory compromise between coating-substrate adhesion and the surface roughness requirement of the bearing rings, a polish post-processing is proposed. Different polish post-processing times and conditions are applied. The coated and polished bearing rings are tested under real friction torque test protocols. These tests show that the application of the coating does not entail a significant improvement in friction performance of the bearing. However, fatigue tests in real test bench are pending to evaluate the possible improvement in bearing life time.

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Influences on the tribological behaviour of slip-rolling DLC-coatings

Cited by 20 publications

References 5 publications

Diamond-Like Carbon Coating Applied to Automotive Engine Components

Diamond-Like Carbon Coating Applied to Automotive Engine Components

Wear properties of diamond-like carbon coatings with silicon and chromium as adhesion layer using a high frequency reciprocating rig

Enhancement of Tribological Behavior of Rolling Bearings by Applying a Multilayer ZrN/ZrCN Coating

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