Deposition and characterization of nanostructured metal/carbon composite films

Pauleau, Y.; Thièry, F.

doi:10.1016/j.surfcoat.2003.10.077

Cited by 105 publications

(40 citation statements)

References 31 publications

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“…This type of microstructure is well known in the Ti-C system and has been observed and described a large number of times. [5,25,26] As predicted by our theoretical calculations, the addition of Al has a pronounced effect on the phase composition. At the studied C/Me ratios Al strongly influenced the degree of structural order.…”

Section: Resultssupporting

confidence: 80%

Design of Nanocomposite Low‐Friction Coatings

Wilhelmsson

Råsander

Carlsson

et al. 2007

Adv Funct Materials

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Friction and wear between moving surfaces is unavoidable and is an important reason for failure of mechanical components. A wear‐resistant and low‐friction coating can prolong the lifetime of an engineered component. Here we demonstrate a new concept for the design of low‐friction nanocomposite carbide coatings with an intrinsic driving force to form amorphous carbon (C–C bonds). Ti–Al–C has been chosen as a model system, but the idea is general and should be applicable to a wide class of materials. The ability to intrinsically form amorphous carbon is achieved by a substitutional solid solution of the weak‐carbide‐forming metal (Al) into the thermodynamically stable monocarbide (TiC). This creates, in a controllable manner, a driving force for phase separation of carbide particles embedded in a matrix of amorphous carbon. In a tribological contact the amorphous carbon can be further graphitized and thereby lower the friction coefficient. Consequently, the model system has a self‐lubricating mechanism but at the same time a tunable share of the two phases, which gives excellent possibilities to design wear resistance and toughness. In this paper we show that the friction coefficient can be lowered by more than 50 % for Al‐containing TiC coatings without severe loss in mechanical characteristics.

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Section: Resultssupporting

confidence: 80%

Design of Nanocomposite Low‐Friction Coatings

Wilhelmsson

Råsander

Carlsson

et al. 2007

Adv Funct Materials

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“…These values are similar to those observed in layered WC/DLC and TiC/DLC composites prepared using magnetron sputtering or electron cyclotron resonance chemical vapor deposition techniques (nanohardness~27 GPa). In addition, these values are significantly greater than those observed in a-C:H-copper coatings prepared using plasma-enhanced chemical vapor deposition (PECVD) or hybrid microwave plasma-assisted chemical vapor deposition/sputtering techniques (nanohardness~10 GPa) [63][64][65][66][67].…”

Section: Nanoindentationmentioning

confidence: 84%

Electrochemical and antimicrobial properties of diamondlike carbon-metal composite films

Morrison

Buchanan

Liaw

et al. 2006

Diamond and Related Materials

134

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Implants containing antimicrobial metals may reduce morbidity, mortality, and healthcare costs associated with medical device-related infections. We have deposited diamondlike carbonsilver (DLC-Ag), diamondlike carbon-platinum (DLC-Pt), and diamondlike carbon-silverplatinum (DLC-AgPt) thin films using a multicomponent target pulsed laser deposition process.Transmission electron microscopy of the DLC-silver and DLC-platinum composite films revealed that the silver and platinum self-assemble into nanoparticle arrays within the diamondlike carbon matrix. The diamondlike carbon-silver film possesses hardness and Young's modulus values of 37 GPa and 331 GPa, respectively. The diamondlike carbon-metal composite films exhibited passive behavior at open-circuit potentials. Low corrosion rates were observed during testing in a phosphate-buffered saline (PBS) electrolyte. In addition, the diamondlike carbon-metal composite films were found to be immune to localized corrosion below 1000 mV (SCE). DLC-silver-platinum films demonstrated exceptional antimicrobial properties against Staphylococcus bacteria. It is believed that a galvanic couple forms between platinum and silver, which accelerates silver ion release and provides more robust antimicrobial activity.Diamondlike carbon-silver-platinum films may provide unique biological functionalities and improved lifetimes for cardiovascular, orthopaedic, biosensor, and implantable microelectromechanical systems.

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“…These values are similar to those observed in layered tungsten carbide/DLC and titanium carbide/ DLC composite fi lms prepared using electron cyclotron resonance chemical vapor deposition and magnetron sputtering techniques (~27 GPa), and are signifi cantly greater than those observed in amorphous hydrogenated DLCcopper coatings prepared using plasmaenhanced chemical vacuum deposition and hybrid microwave plasma-assisted chemical vapor deposition/sputtering techniques (~10 GPa). [54][55][56][57][58][59] The functionally gradient DLC-silver composite fi lms demonstrated exceptional wear resistance during linear tribometer testing (CSM Instruments, Irvine California). The functionally gradient DLC-silver composite fi lms exhibited normalized wear rates of ~10 -7 to 10 -8 mm 3 /N/m.…”

Section: Diamondlike Carbon-metal Composite Thin Filmsmentioning

confidence: 99%

The use of functionally gradient materials in medicine

Narayan

Hobbs

Jin

et al. 2006

JOM

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Surface Modifi cation in Bioapplications OverviewFunctionally gradient materials are characterized by uniform changes in composition, crystallinity, and/or grain structure, which may provide unique biological, chemical, or mechanical functionalities in next-generation medical devices. In this article, the development of functionally gradient Zr-Nb alloys, hydroxyapatite coatings, and diamondlike carbon-metal coatings for medical applications is reviewed.

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Deposition and characterization of nanostructured metal/carbon composite films

Cited by 105 publications

References 31 publications

Design of Nanocomposite Low‐Friction Coatings

Design of Nanocomposite Low‐Friction Coatings

Electrochemical and antimicrobial properties of diamondlike carbon-metal composite films

The use of functionally gradient materials in medicine

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