Evaluation of the surface properties of PEEK substrate after two-step plasma modification: Etching and deposition of DLC coatings

Kaczorowski, W.; Batory, D.; Szymański, W.; Niedzielski, P.

doi:10.1016/j.surfcoat.2015.01.053

Cited by 25 publications

(28 citation statements)

References 46 publications

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“…In this part of the study, the ESCALAB-210 system (VG Scientific, Fison, Glasgow, UK)-equipped with a non-monochromatic Al source (Ka = 1486.6 eV) operating at 14.5 kV and 20 mA-was used. For the tested DLC flakes, the C1s peak calibration was performed for the peak position amounting to 284.6 eV [26,27]. To obtain a more accurate analysis, the C1s peak was adapted using Gauss-Lorentz curves corresponding to sp 2 C-C, sp 3 C=C and C-N, C-O, C=O bonds, which maximum values equal to approximately 284.5 eV, 285.3 eV, 285.93 eV, 286.1 eV and 288 eV, respectively [27,28].…”

Section: Surface Characterisationmentioning

confidence: 99%

“…For the tested DLC flakes, the C1s peak calibration was performed for the peak position amounting to 284.6 eV [26,27]. To obtain a more accurate analysis, the C1s peak was adapted using Gauss-Lorentz curves corresponding to sp 2 C-C, sp 3 C=C and C-N, C-O, C=O bonds, which maximum values equal to approximately 284.5 eV, 285.3 eV, 285.93 eV, 286.1 eV and 288 eV, respectively [27,28]. Additionally, the chemical structure of the powders produced was analysed using Confocal Raman Spectroscopy, the inVia device (Renishaw plc, Gloucestershire, UK)), operating at a wavelength of 532 nm.…”

Section: Surface Characterisationmentioning

confidence: 99%

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The Influence of Plasma-Assisted Production and Milling Processes of DLC Flakes on Their Size, Composition and Chemical Structure

2020

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Diamond-like carbon (DLC) flakes were produced using a dual-frequency method: microwave/radiofrequency plasma-assisted chemical vapour deposition (MW/RF PACVD) with the use of methane or its mixture with gases such as hydrogen, argon, oxygen or nitrogen. Their modification was performed using a planetary ball mill with and without a fluid: deionised water or methanol. Changes occurring in the morphology of flake surfaces were presented in pictures taken using a scanning electron microscope (SEM). Their composition and chemical structure were analysed using Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The presented research results show that it is possible to control the size of flakes and their chemical structure. An increase in the C-C sp 3 bond content in produced carbon-based materials is only possible by modifying DLC flakes during their production process by introducing oxygen or argon into the working chamber together with the carbon-carrying gas. In the processes of mechanical DLC flake modification, it is necessary to add fluid to limit the occurrence of graphitisation processes. The research conducted shows that methanol is best used for this purpose as its use results in a decrease in the percentage of C-C sp 3 bonds as compared to the materials, before milling, of only 1.7%. A frequent problem both in the production of DLC flakes and during their mechanical modification is the introduction of additional elements into their structure. Admixing electrode materials from the plasma-chemical device (iron) or grinding beads (zirconium) to DLC flakes was observed in our studies. These processes can be limited by the appropriate selection of production conditions or by mechanical modifications.

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Section: Surface Characterisationmentioning

confidence: 99%

Section: Surface Characterisationmentioning

confidence: 99%

The Influence of Plasma-Assisted Production and Milling Processes of DLC Flakes on Their Size, Composition and Chemical Structure

2020

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“…In the literature, previous works report the successful deposition of DLC films on PEEK [25][26][27][28][29]. In particular, Kaczorowski et al [28,29] studied the effect of various plasma etching treatments prior to the deposition of DLC films on PEEK. More precisely, they assessed the changes in surface topography, chemical composition, wetting, mechanical and tribological behaviors associated with the different plasma etching treatments.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Evaluation of a variety of a-C:H coatings on PEEK for biomedical implants

Dufils

Faverjon

Héau

et al. 2017

Surface and Coatings Technology

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Four different hydrogenated amorphous carbon (a-C:H) coatings were deposited on polyether-ether-ketone (PEEK). Their properties in terms of surface roughness, wettability, nanoindentation, residual internal stress, adhesion, scratch resistance, friction and wear resistance were assessed. The two polymer-like carbon coatings were obtained without applying any bias voltage to the substrate. They exhibited very low hardness, Young's modulus and residual internal stress compared with what is generally achieved for diamond-like carbon films. Nonetheless, they enabled to significantly reduce wear when rubbed against an alumina ball. They also showed

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“…Plasma treatment, especially argon plasma treatment with high energy to bombard the substrate, provides an effective, environmental friendly and versatile technique for modifying the surface properties and improving the coating performances . Cr ion etching before or during coating fabrication process in Ar atmosphere could smooth out the coating surface and significantly reduced the surface roughness of coating .…”

Section: Introductionmentioning

confidence: 99%

Effects of intermediate Ar plasma treatments on CrN coating microstructures and property evolutions

Guan

Wang

Zhang

et al. 2016

Surf. Interface Anal.

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Chromium nitride (CrN) coatings with different steps of intermediate argon plasma treatments were deposited with primary (200) orientation by multi‐arc ion plating technique. By virtue of scanning electron microscopy, X‐ray diffraction and high‐resolution transmission electron microscopy, the influence of intermediate argon plasma treatments on the coating microstructures, mechanical properties and corrosion properties as well as tribological behaviors in artificial seawater solutions were systematically investigated. It was assumed that the mechanical properties, adhesion strength, corrosion and tribological performances of coatings depended on argon plasma treatment steps. High‐performance coatings could be obtained by proper plasma treatment steps. The superior anti‐corrosion ability of coating with appropriate treatment steps may be ascribed to the increased charge transfer resistance due to alternative interface and CrN layer and the compact microstructure. On the other hand, the excellent tribological performances in seawater conditions may be attributed to the enhanced mechanical properties. Otherwise, further increase in treatment steps was assumed to distinctly increase defects and deteriorate the coating integrity thus weakening coating properties and behaviors. Copyright © 2016 John Wiley & Sons, Ltd.

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Evaluation of the surface properties of PEEK substrate after two-step plasma modification: Etching and deposition of DLC coatings

Cited by 25 publications

References 46 publications

The Influence of Plasma-Assisted Production and Milling Processes of DLC Flakes on Their Size, Composition and Chemical Structure

The Influence of Plasma-Assisted Production and Milling Processes of DLC Flakes on Their Size, Composition and Chemical Structure

Evaluation of a variety of a-C:H coatings on PEEK for biomedical implants

Effects of intermediate Ar plasma treatments on CrN coating microstructures and property evolutions

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