Electrochemical corrosion behaviors of a-C:H and a-C:NX:H films

Wang, Zhou; Wang, Chengbing; Wang, Qi; Zhang, Junyan

doi:10.1016/j.apsusc.2007.10.088

Cited by 35 publications

(10 citation statements)

References 28 publications

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“…According to Wang et al [53], bacterial adhesion decreased slightly with the decreasing sp 3 /sp 2 ratio. Our films presented similar results to their films (I D /I G = 1.11) against Staphylococcus epidermidis.…”

Section: Resultsmentioning

confidence: 95%

Antibacterial activity of DLC films containing TiO2 nanoparticles

Marciano

Lima-Oliveira

Silva

et al. 2009

Journal of Colloid and Interface Science

103

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Diamond-like carbon (DLC) films have been the focus of extensive research in recent years due to their potential applications as surface coatings on biomedical devices. Titanium dioxide (TiO2) in the anatase crystalline form is a strong bactericidal agent when exposed to near-UV light. In this work we investigate the bactericidal activity of DLC films containing TiO2 nanoparticles. The films were grown on 316L stainless-steel substrates from a dispersion of TiO2 in hexane using plasma-enhanced chemical vapor deposition. The composition, bonding structure, surface energy, stress, and surface roughness of these films were also evaluated. The antibacterial tests were performed against Escherichia coli (E. coli) and the results were compared to the bacterial adhesion force to the studied surfaces. The presence of TiO2 in DLC bulk was confirmed by Raman spectroscopy. As TiO2 content increased, I(D)/I(G) ratio, hydrogen content, and roughness also increased; the films became more hydrophilic, with higher surface free energy and the interfacial energy of bacteria adhesion decreased. Experimental results show that TiO2 increased DLC bactericidal activity. Pure DLC films were thermodynamically unfavorable to bacterial adhesion. However, the chemical interaction between the E. coli and the studied films increased for the films with higher TiO2 concentration. As TiO2 bactericidal activity starts its action by oxidative damage to the bacteria wall, a decrease in the interfacial energy of bacteria adhesion causes an increase in the chemical interaction between E. coli and the films, which is an additional factor for the increasing bactericidal activity. From these results, DLC with TiO2 nanoparticles can be useful for producing coatings with antibacterial properties.

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Section: Resultsmentioning

confidence: 95%

Antibacterial activity of DLC films containing TiO2 nanoparticles

Marciano

Lima-Oliveira

Silva

et al. 2009

Journal of Colloid and Interface Science

103

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“…It is known that DLC electrochemical corrosion behavior is heavily dependent on the film composition and structure, which are in turn dependent on the deposition technique and precursor gas [2]. In this paper, we show for the first time the incorporation of nanocrystalline diamond (NCD) particles into DLC films in order to investigate NCD-DLC electrochemical corrosion resistance.…”

Section: Introductionmentioning

confidence: 97%

Improvement of diamond-like carbon electrochemical corrosion resistance by addition of nanocrystalline diamond

Marciano

Almeida

Bonetti

et al. 2010

Journal of Colloid and Interface Science

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Nanocrystalline diamond (NCD) particles were incorporated into diamond-like carbon (DLC) films in order to investigate NCD-DLC electrochemical corrosion resistance. The films were grown over 304 stainless steel using plasma-enhanced chemical vapor deposition. NCD particles were incorporated into DLC during the deposition process. The investigation of NCD-DLC electrochemical corrosion behavior was performed using potentiodynamic polarization against NaCl. NCD-DLC films presented more negative corrosion potential and lower anodic and cathodic current densities. The electrochemical analysis indicated that NCD-DLC films present superior impedance and polarization resistance compared to the pure DLC, which indicate that they are promising corrosion protective coatings in aggressive solutions.

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“…Because of its special properties, it is commonly applied as a wear-resistant protective coating in the magnetic storage, automobile, tooling, biomedical, and other industries [1][2][3]. Another good property reported is the DLC electrochemical resistance [4][5][6]. DLC electrochemical corrosion behavior is known to be dependent on the film composition and structure, which depend on the deposition technique and precursor gas [4].…”

Section: Introductionmentioning

confidence: 99%

“…Another good property reported is the DLC electrochemical resistance [4][5][6]. DLC electrochemical corrosion behavior is known to be dependent on the film composition and structure, which depend on the deposition technique and precursor gas [4]. Many investigations have been dedicated to the introduction of additional foreign elements in the structure to improve the properties of DLC coatings [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Elements on the Corrosion Resistance of DLC Films

Moolsradoo

Watanabe

2017

Advances in Materials Science and Engineering

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Pure DLC, Si-DLC, and Si-N-DLC films deposited from C 2 H 2 , C 2 H 2 : TMS and C 2 H 2 : TMS : N 2 mixtures were used to study the effects of the elemental contents (silicon, silicon-nitrogen) on deposition and corrosion resistance properties. The films were prepared on Si (100) wafers using the plasma-based ion implantation (PBII) technique. The film structure was analyzed using Raman spectroscopy. The composition at the top surface of the films was measured using energy dispersive X-ray spectroscopy (EDS). The hardness and elastic modulus of the films were measured using a nanoindentation hardness tester. The corrosion performance of the films was conducted using potentiodynamic polarization experiments in an aqueous 0.05 M NaCl solution. The results indicate that the hardness and corrosion resistance of the Si-DLC film increase as the silicon content increases. This is due to the increase of the sp 3 cluster. The corrosion resistance of a pure DLC film increases when silicon and silicon-nitrogen are doped into the film. Si-DLC films with a silicon content of 40 at.% had a corrosion potential value of 0.61 V, while a Si-N-DLC film with a silicon and nitrogen content of 19.3 at.% and 1 at.% shows a corrosion potential value of 0.85 V, which is a considerable improvement in the corrosion resistance property.

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Electrochemical corrosion behaviors of a-C:H and a-C:NX:H films

Cited by 35 publications

References 28 publications

Antibacterial activity of DLC films containing TiO2 nanoparticles

Antibacterial activity of DLC films containing TiO2 nanoparticles

Improvement of diamond-like carbon electrochemical corrosion resistance by addition of nanocrystalline diamond

Influence of Elements on the Corrosion Resistance of DLC Films

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