Plasma investigations and deposition of Me-DLC (Me = Al, Ti or Nb) obtained by a magnetron sputtering-RFPECVD hybrid process

Bouabibsa, Imane; Lamri, Salim; Alhussein, Akram; Minéa, T.; Sanchette, Frédéric

doi:10.1016/j.surfcoat.2018.09.033

Cited by 20 publications

(15 citation statements)

References 22 publications

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“…This may be due to the large amount of carbides that play a role as an abrasive body that breaks down the carbon matrix and causes severe wear. In this case, the increase of roughness when Ti or Nb increase in Ti-DLC and Nb-DLC coatings, as discussed in [47], can explain the increase of friction coefficients of these coatings. Figure 12 shows the wear rate of Me-DLC (Me = Al, Ti or Nb) as a function of the Me/C ratio.…”

Section: Hardness and Young's Modulusmentioning

confidence: 78%

“…This is associated with a stabilization of the disorder for the high metallic content elements, related to the maintenance of the organization of graphitic clusters Csp 2 that are present in the carbon matrix [1]. At the same time, an increase in the positions of the two bands D and G towards the large wave numbers is observed as a function of the metal content in the coatings, as shown in [47].…”

Section: Friction and Wear Testingmentioning

confidence: 82%

“…The addition of a metallic dopant with weak content favours the sp 2 hybridation of carbon and disorder of the matrix (Section 3.1.2), which is associated with better friction behaviour and low wear rates. For higher metal contents, it has been shown that roughness increases significantly [47] and hardness decreases, which can explain the higher ware rates. rates.…”

Section: Tribological Performancesmentioning

confidence: 99%

“…The relative ratio of the D peak to G peak (I D /I G ), their positions and their FWHM (Full Width at Half Maximum) can be used to characterize the sp 3 /sp 2 bonding ratio. I D /I G and the peak positions of G and D bands were presented as a function of Me/C ratio in [47]. A sharp increase in the I D /I G ratio is observed when the metal dopants are incorporated in the DLC films.…”

Section: Friction and Wear Testingmentioning

confidence: 99%

“…It is also the sign of an increase in the size of the sp 2 type aggregates contained in the carbon matrix [56,59,60]. A stabilization of the I D /I G ratio was observed for Nb-DLC coatings for high values of the Nb/C ratio [47]. This is associated with a stabilization of the disorder for the high metallic content elements, related to the maintenance of the organization of graphitic clusters Csp 2 that are present in the carbon matrix [1].…”

Section: Friction and Wear Testingmentioning

confidence: 99%

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Structure, Mechanical and Tribological Properties of Me-Doped Diamond-Like Carbon (DLC) (Me = Al, Ti, or Nb) Hydrogenated Amorphous Carbon Coatings

2018

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Metal containing hydrogenated diamond-like carbon coatings (Me-DLC, Me = Al, Ti, or Nb) of 3 ± 0.2 μm thickness were deposited by a magnetron sputtering-RFPECVD hybrid process in an Ar/H2/C2H2 mixture. The composition and structure were investigated by Energy Dispersive X-ray Spectroscopy (EDS), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The residual stress was measured using the curvature method and nanoindentation was used to determine the hardness and the Young’s modulus. A Ball-on-disk tribometer was employed to investigate the frictional properties and sliding wear resistance of films. The results show that the properties depend on the nature and the Me content in the coatings. The doping of the DLC coatings leads to a decrease in hardness, Young’s modulus, and residual stresses. Wear rate of the films first decreases with intermediate Me contents and then increases for higher Me contents. Significant improvements in the friction coefficient on steel as well as in the wear rate are observed for all Al-DLC coatings, and, concerning the friction coefficient, the lowest value is measured at 0.04 as compared to 0.07 for the undoped DLC.

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Section: Hardness and Young's Modulusmentioning

confidence: 78%

Section: Friction and Wear Testingmentioning

confidence: 82%

Section: Tribological Performancesmentioning

confidence: 99%

Section: Friction and Wear Testingmentioning

confidence: 99%

Section: Friction and Wear Testingmentioning

confidence: 99%

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Structure, Mechanical and Tribological Properties of Me-Doped Diamond-Like Carbon (DLC) (Me = Al, Ti, or Nb) Hydrogenated Amorphous Carbon Coatings

2018

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Characteristics of DLC films doped with multi-element alloy

Chen

Tsao

et al. 2022

Int J Adv Manuf Technol

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Multi-element alloy doped diamond-like carbon (DLC) lms were coated using sputtering with a (AlCrNbSiTiV) target. TEM and XRD results indicated DLC lm had an amorphous compound feature incorporating poly-crystalline phases around the face-center-cubic structure, which were embedded into the amorphous carbon matrix. The Raman spectra and mechanical characteristics of the DLC lm sample were associated with concentration changes in the carbon and the multi-element alloy doped in the DLC lms, which depended on the DC power. This investigation indicated that improved mechanical properties, including hardness and the elastic recovery rate, can be obtained from the multi-element alloy doped DLC lm coated with proper DC sputtering power. These results demonstrated a proper DC power modi es the structure of multi-element alloy doped DLC lm and improves its mechanical performance. This study should pave the way for the development of DLC lm and elevate its application in various industries.Code availability: Not applicable.

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Synthesis and characterization of diamond-like carbon coatings for drill bits using plasma-enhanced chemical vapor deposition

Jatti

Sefene

Jatti

et al. 2023

Int J Adv Manuf Technol

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This study demonstrates the performance enhancement of drill bits during dry cutting operation of LM6 aluminum alloy and bright mild steel using optimized Diamond-Like-Carbon (DLC) coatings. DLC coatings are deposited using Plasma Enhanced Chemical Vapour Deposition (PECVD) process by varying the process parameters, bias voltage, bias frequency, gas mixture, and working pressure. DLC coatings were grown over the silicon, high-speed steel, and stainless-steel pin substrate. Coating's chemical, composition, topography, and mechanical properties measurements were checked using Fourier Transform Infrared (FTIR), micro-Raman spectroscopy, Atomic Force Microscopy, and intrinsic stress & nano-hardness/micro-hardness tester, respectively. Coating deposition and optimization were carried out as per the Taguchi method. Further, the optimized DLC coatings tribological test and the effect of DLC coating on the tool life were performed. Results showed that the DLC-coated substrate had less wear loss and coe cient of friction than the uncoated substrate. The dry-cutting test showed that coated drill bits produce a better surface nish and consume less power in the drilling operation than uncoated drill bits. This is due to the low coe cient of friction and low wear loss of the DLC coatings.

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Plasma investigations and deposition of Me-DLC (Me = Al, Ti or Nb) obtained by a magnetron sputtering-RFPECVD hybrid process

Cited by 20 publications

References 22 publications

Structure, Mechanical and Tribological Properties of Me-Doped Diamond-Like Carbon (DLC) (Me = Al, Ti, or Nb) Hydrogenated Amorphous Carbon Coatings

Structure, Mechanical and Tribological Properties of Me-Doped Diamond-Like Carbon (DLC) (Me = Al, Ti, or Nb) Hydrogenated Amorphous Carbon Coatings

Characteristics of DLC films doped with multi-element alloy

Synthesis and characterization of diamond-like carbon coatings for drill bits using plasma-enhanced chemical vapor deposition

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Plasma investigations and deposition of Me-DLC (Me = Al, Ti or Nb) obtained by a magnetron sputtering-RFPECVD hybrid process

Cited by 20 publications

References 22 publications

Structure, Mechanical and Tribological Properties of Me-Doped Diamond-Like Carbon (DLC) (Me = Al, Ti, or Nb) Hydrogenated Amorphous Carbon Coatings

Structure, Mechanical and Tribological Properties of Me-Doped Diamond-Like Carbon (DLC) (Me = Al, Ti, or Nb) Hydrogenated Amorphous Carbon Coatings

Characteristics of DLC films doped with multi-element alloy

Synthesis and characterization of diamond-like carbon coatings for drill bits using plasma-enhanced chemical vapor deposition

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Plasma investigations and deposition of Me-DLC (Me = Al, Ti or Nb) obtained by a magnetron sputtering-RFPECVD hybrid process