Tribological Behavior of DLC Films in Various Lubrication Regimes

Podgornik, Bojan

doi:10.1007/978-0-387-49891-1_16

Cited by 8 publications

(4 citation statements)

References 56 publications

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“…Friction under lubricated conditions is a complex process depending on the type of lubricant, additives, coating type, operating temperature and contact conditions. Generally, compared to steel, the most DLC based coatings reduce the friction coefficients under lubricated conditions [137,40,150].…”

Section: Classification and Properties Of Dlc Coatingsmentioning

confidence: 99%

Surface technology for automotive engineering

et al. 2009

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Section: Classification and Properties Of Dlc Coatingsmentioning

confidence: 99%

Surface technology for automotive engineering

et al. 2009

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“…Podgornik [31] investigated the differences in the behavior of the WC/a-C:H:W coating under conditions of technically dry friction and various lubricants. The tests used PAO, diesel, and gasoline as lubricants and were carried out in various combinations: steel/steel, steel/W-DLC, and steel/DLC.…”

Section: Introductionmentioning

confidence: 99%

Properties of Diamond-like Tungsten-Doped Carbon Coatings Lubricated with Cutting Fluid

Radoń-Kobus,

Madej,

Kowalczyk

et al. 2024

Coatings

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In this paper, the authors investigated the impact of DLC coatings doped with tungsten (a-C:H:W) coatings obtained using plasma-assisted physical vapor deposition (PVD) on the properties of the 100Cr6 steel. The results of the 100Cr6 steel specimens with and without the coating were compared. Scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis were used to observe the morphology of the coating surfaces and cross-sections and identify the elements in the coating composition. The contact angle of the investigated surfaces was measured with a tensiometer. Additionally, the effect of the coatings on the tribological properties of lubricated friction pairs was evaluated. Friction tests were performed on a ball-on-disc tribometer under lubrication with cutting fluid. The surface texture of the samples before and after the tribological tests was measured using a confocal profilometer. The results obtained from the tests and analysis allow for the conclusion that the use of DLC coatings a-C:H:W increases the hardness of 100Cr6 steel by three times. The values of the contact angles were indicative of surface hydrophilic characteristics. The tungsten-doped diamond-like coating under friction conditions reduced the coefficient of friction and wear. DLC coatings a-C:H:W lubricated with the cutting fluid improve the mechanical and tribological properties of 100Cr6 steel sliding surfaces under friction.

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“…Several researchers have discussed the influences of physical properties of biodiesel on the injection process of diesel engines. The diesel fuel density is found to have important effect to the fuel discharge coefficient [1] and pressure wave in the common-rail system [2].…”

Section: Introductionmentioning

confidence: 99%

Wear Characteristic of Stainless Steel 304 Sliding against Cast Iron under Lubrication Environment of Palm Biodiesel Fuel

Tadjuddin

Fuadi

Fazmi

et al. 2015

AMM

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The used of palm-biodiesel fuel in automotive industry is increasing rapidly nowadays. Among the reasons are high efficiency modern fuel injection system of diesel engines and the shortage of petroleum diesel fuel from fossil resources. Among the parts affected by the fuel switch are fuel pumps components, including the fuel injection needle. Those components, working under the lubrication environment of the fuel, have to be prevented from excessive wear to maintain their high performances. This paper discussed the wear characteristics of stainless steel 304 sliding against cast iron under the lubrication environment of palm-biodiesel fuel with the concentration of 7.5% palm methyl ester in the petroleum diesel fuel. The material pair is chosen because of their widely used as mechanical components. The tests were conducted using a ball on disk tribometer. The results show that wear of the stainless steel ball is smaller in the environment with the presence of palm methyl ester content in the diesel fuel compared to that in the environment without the presence of the palm methyl ester content. The results suggested that palm-biodiesel fuel is favorable in decreasing the wear of the material.

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Tribological Behavior of DLC Films in Various Lubrication Regimes

Cited by 8 publications

References 56 publications

Surface technology for automotive engineering

Surface technology for automotive engineering

Properties of Diamond-like Tungsten-Doped Carbon Coatings Lubricated with Cutting Fluid

Wear Characteristic of Stainless Steel 304 Sliding against Cast Iron under Lubrication Environment of Palm Biodiesel Fuel

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