Tribological Properties and Characterization of Diamond Like Carbon Coatings Deposited by MW/RF and RF Plasma‐Enhanced CVD Method on Poly(ether‐ether‐ketone)

Abstract

Diamond like carbon coatings were manufactured by dual frequency plasma enhanced chemical vapour deposition method on a poly(ether‐ether‐ketone) substrates. In the presented work, modified surfaces were characterized in terms of the tribological parameters, surface topography, mechanical properties and the chemical composition. Obtained results of the research indicate that the highest resistance against wear, which means the most probable application abilities, presented the carbon coatings created in RF plasma with the use of nitrogen for the preliminary stage of preparation. Due to that modification, it was possible to limit the coefficient of friction from the value of c.a. 0.4–0.26 and 35 times decrease the specific wear rate. The DLC coatings deposited in RF plasma exhibited hardness of about 2 GPa with a relatively low contribution of sp3 phase and surface roughness.

<i>In vivo</i> bioactivity of porous polyetheretherketone with a foamed surface

“…However, PEEK is a bioinert material whose fixation with bone is limited. Surface modification of PEEK such as application of bioactive coatings by plasma spray, as well as the use of PEEK composites with bioactive reagents, is known to increase the fixation of PEEK with bone 12) . In addition, direct bone contact to the implant has been achieved by incorporating bioactive materials, such as hydroxyapatite, into PEEK 13) .…”

Physicochemical and Biological Investigation of Different Structures of Carbon Coatings Deposited onto Polyurethane

“…(radio frequency) electrodes of plasmochemical reactors. Processes of modification were conducted using two plasma modification technologies as described elsewhere (Batory et al 2008;Kaczorowski and Niedzielski 2008;Batory et al 2013;Kaczorowski et al 2014). Dual-frequency technology (MW/RF PACVD method marked as MW/RF) was used in order to conduct the modification processes using pure methane.…”

“…Four Gaussian profiles with characteristic binding energies, associated with a certain chemical state of a film component, were fitted to each C1s peak. The carbon peaks at binding energies of ~284.5 eV and ~285.3 eV corresponded to sp 2 and sp 3 coordinated carbon bonding, respectively (Narayan 2005;Kaczorowski et al 2014;. The other two carbon peaks located at binding energies of ~286.1 eV and ~288 eV were associated with oxygen adsorbed on the coatings surface (Foong et al 2011;Takabayashi and Takahagi 2015).…”

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

“…DLC flakes were produced using a device based on the MW/RF plasma-assisted chemical vapour deposition (PACVD) method which was described in earlier publications [16,19,23]. This technique combines the advantages of microwave (2.45 GHz) and radio frequency plasma (13.56 MHz), allowing the control of degree of ionisation of the working atmosphere and the level of ion energy using RF bias [8,24]. The conducted work shows that, using this method, the deposition rate of the DLC coatings can be varied from 1 to 18 µm/h, which is close to the growth rate of carbon nanowalls [25].…”

“…This, however, does not change the fact that this area is still valid and numerous researchers continue their studies on other forms of carbon, including diamond-like carbon (DLC). DLC is excellent as a low-friction or anti-wear coating [8,9] especially in medical applications [10,11] and it is often modified by adding various elements, e.g., Si, Ag, F or Ti [12][13][14]. It can also be used for the production of carbon-based fragmented materials, which are usually described in the literature as flakes or powders [15,16].…”