Tribological behavior of temperature dependent environment friendly thermal CVD diamond coating

Tyagi, Ankit; Walia, R. S.; Murtaza, Qasim

doi:10.1016/j.diamond.2019.05.003

Cited by 37 publications

(19 citation statements)

References 40 publications

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“…The prominent peaks on the coating were at 2Ɵ = 26° to 27°, 2Ɵ = 35° to 36°, and 2Ɵ = 48° to 48.5°. The HRXRD results confirm the formations of carbides, oxides and sulphides phases within the coating [26]. Fig.…”

Section: Coating Characterizationsupporting

confidence: 70%

“…In the present research, prominent peaks were observed at 1120 cm -1 to1140 cm -1 , 1340 cm -1 to 1360 cm -1 and 1550 cm -1 to 1590 cm -1 on the carbon-based hybrid composite coating. It is noted that peaks around 1340 cm -1 to 1350 cm -1 and at 1120 cm -1 to 1140 cm -1 show sp 1 or sp 2 hybridized carbon deposition on the developed coating, while peaks around 1550 cm -1 to 1590 cm -1 shows presence of sp 3 hybridization with presence of diamond-like carbon (DLC) coating as testified in formerly research [26] to [28].…”

Section: Coating Characterizationmentioning

confidence: 69%

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Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

Tyagi

Murtaza

Walia

2021

SV-JME

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At present, cost-effective coatings that cause less pollution are in great demand; to decrease frictional losses, carbon-based hybrid composite coatings have been developed using a high-velocity oxy-fuel (HVOF) spray process. The microstructural, tribological, corrosion, and mechanical properties of these coatings have been evaluated using high-resolution X-ray diffraction (HRXRD), field emission scanning electron microscopy-Energy dispersive X-ray Spectroscopy (FESEM-EDS), Raman spectrum, Vickers micro-hardness tester, µ-360 cos(α) residual stress analyser, corrosion tester, and high temperature tribometer. The residual stress, corrosion and tribological behaviour at high temperatures were investigated using a pin-on-disc high-temperature tribometer. The tribological performance was evaluated using a high-temperature tribometer, and the experimental result shows that a coefficient of friction (COF) varies from 0.12 to 0.52, while wear results were in the range of 45 µm to 120 µm, as the test condition of temperature ranging from 50 °C to 350 °C, load from 60 N to 90 N and sliding velocity from 0.1 m/s to 0.4 m/s respectively. The experimental results of corrosion testing show that the mass loss decreases from 0.10 g to 0.04 g, when samples were dipped for 1 h; when the samples were dipped for 8 h, the mass loss of hybrid composite coating varied from 0.12 g to 0.045 g. The tribological test showed a 78.9 % increase in micro-hardness, a 78 % decrease in residual stress, and 60 % and 62.5 % decreases in mass loss due to corrosion at 1 h and 8 h, respectively, a 76.9 % decrease in COF and 62.5 % reduction in the wear at test condition of 350 ºC temperature, a sliding velocity of 0.4 m/s and 90 N load.

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Section: Coating Characterizationsupporting

confidence: 70%

Section: Coating Characterizationmentioning

confidence: 69%

Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

Tyagi

Murtaza

Walia

2021

SV-JME

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“…Similarly, Figure 8 gives the variation of surface roughness. The surface roughness obtained was least at 2.4 m/s sliding speed, 20 N load and 3.5 mm pin diameter Tyagi et al (2019).…”

Section: Record Of Resultsmentioning

confidence: 90%

“…Also, a mixture of Ar/H 2 gases was supplied during the thermal CVD process to remove oxygen contents at atmospheric pressure at 900°C temperature. This process develops a diamond film on the tungsten carbide substrate , and Tyagi et al (2019).…”

Section: Coating Processmentioning

confidence: 99%

GA based optimization of tri-bological behaviour of diamond coated tungsten carbide

Rana

Murtaza

Walia

2020

WJE

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Purpose In this study, the tri-bological behaviour of the un-coated and diamond coated tungsten carbide was evaluated using the pin-on-disc test rig. The same was also tested on a lathe machine tool. This paper aims to compare the tri-bological behaviour of coated tungsten carbide pin with un-coated tungsten carbide pin it also correlates the wear obtained from the two machines used. Design/methodology/approach Experiments were performed using L8 orthogonal array and results obtained on a pin-on-disc test rig under dry sliding process were optimized through a modern optimization technique i.e. genetic algorithm (GA). The response surface methodology model (L8 orthogonal array) formed the basis for the development of the GA model, which defines the conditions of minimum wear, minimum coefficient of friction and minimum surface roughness for the sliding process of the pin-on-disc test rig. Findings Implementation of the heuristic approach for optimization of input parameters for the combination of tool material used for the turning process. The initial approach involves tri-bological testing considering the same combination. The set of experiments further performed, inferred that the results were similar and that the diamond coating enhances the life of the tool. Originality/value Successfully synthesized the diamond coating on tungsten carbide tool material. Implantation of the heuristic approach, i.e. GA to tri-bological tests to identify the optimized level of input variables. Experimentation involves the tri-bological testing whose results were confirmed through performing experiments on the lathe machine tool.

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“…This atomic structure provides diamond with excellent mechanical properties, e.g., an ultrahigh hardness, high strength and unmatched wear resistance [1], which lead to the widespread industrial applications of diamond, ranging from cutting tools to bearings in microelectromechanical systems (MEMS) [2]. In addition, functional parts with sliding surfaces, e.g., piston rings [3] and triboelectric nanogenerators [4], are usually coated with a thin diamond film to enhance the wear resistance and consequently increase the service life. The latest report [5] declared that it can effectively reduce the discomfort experienced by patients when they undergo surgery by utilizing a scalpel coated with a diamond film because of its outstanding friction performance.…”

Section: Introductionmentioning

confidence: 99%

Load- and Size Effects of the Diamond Friction Coefficient at the Nanoscale

2020

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The friction coefficient, an important parameter to evaluate the dynamic properties of friction pairs, has been widely used in macro engineering fields. However, it is probably inappropriate to characterize the tribological properties at the nanoscale due to the strong size effect, and the conventional formula cannot reveal its determinants owing to its oversimple form. Therefore, in the present work, a new formula is deduced to overcome these shortcomings. The established formula for the friction coefficient considers the adhesion and discloses the relationship between the friction coefficient and the material properties of diamond. It effectively suppresses the dependency of the friction coefficient on the load, although such a dependency cannot be eliminated completely. Therefore, another new formula, independent of the loading force, is derived. Interestingly, the results indicate that the size effect is invariably observed in the friction coefficients derived from the three formulas due to different accumulation effects of debris atoms, which is verified by molecular dynamics simulations.

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Tribological behavior of temperature dependent environment friendly thermal CVD diamond coating

Cited by 37 publications

References 40 publications

Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

GA based optimization of tri-bological behaviour of diamond coated tungsten carbide

Load- and Size Effects of the Diamond Friction Coefficient at the Nanoscale

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