Microstructure and nanomechanical properties of pulsed excimer laser deposited DLC:Ag films: Enhanced nanotribological response
Date
2017Author
Constantinou, M.Pervolaraki, M.
Nikolaou, P.
Prouskas, C.
Patsalas, P.
Kelires, P.
Giapintzakis, John
Constantinides, G.
Source
Surface and Coatings TechnologyVolume
309Pages
320-330Google Scholar check
Keyword(s):
Metadata
Show full item recordAbstract
Diamond-like carbon:silver (DLC:Ag) thin films, with metal contents as high as 16.8 at.%, have been deposited on silicon substrates using pulsed excimer laser deposition the produced DLC:Ag films sustain a substantial sp3 content (36%) in the DLC matrix even for the highest Ag content ( 16.8 at.%), in contrast to previous reports. The morphological, topographical, crystallographic, compositional and mechanical/tribological characteristics of the films have been studied using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and nanoindentation/nanoscratch tests, respectively. The low miscibility between carbon and silver leads to a nanocomposite material that exhibits a reduced elastic modulus and hardness that scale inversely with the silver content. The mechanical capacity reduction is attributed to the incorporation of the soft/compliant silver phase and the subsequent graphitization of the amorphous carbon matrix, as quantified through XPS. This mechanical softening response, however, is coupled with an increased ductility and an enhanced tribomechanical response (70% increase in the critical load to film failure), making this class of DLC-metal nanocomposites of great interest for protective coatings and other functional applications. � 2016 Elsevier B.V.
Collections
Cite as
Related items
Showing items related by title, author, creator and subject.
-
Article
Nanoporous activated carbon cloth as a versatile material for hydrogen adsorption, selective gas separation and electrochemical energy storage
Kostoglou, N.; Koczwara, C.; Prehal, C.; Terziyska, V.; Babic, B.; Matovic, B.; Constantinides, G.; Tampaxis, C.; Charalambopoulou, Georgia; Steriotis, T.; Hinder, S.; Baker, M. A.; Polychronopoulou, K.; Doumanidis, C. C.; Paris, O.; Mitterer, C.; Rebholz, Claus (2017)The efficient storage of energy combined with a minimum carbon footprint is still considered one of the major challenges towards the transition to a progressive, sustainable and environmental friendly society on a global ...
-
Article
Ultrafast pulsed laser deposition of carbon nanostructures: Structural and optical characterization
Pervolaraki, Maria; Komninou, P.; Kioseoglou, J.; Othonos, Andreas S.; Giapintzakis, Ioannis (2013)Carbon nanostructured materials were obtained by high-repetition rate pulsed laser ablation of a graphite target using a train of 10-ps duration pulses at 1064 nm in different pressures of high-purity Ar gas. It is ...
-
Article
Ultrafast pulsed laser deposition of carbon nanostructures: Structural and optical characterization
Pervolaraki, M.; Komninou, P.; Kioseoglou, J.; Othonos, A.; Giapintzakis, John (2013)Carbon nanostructured materials were obtained by high-repetition rate pulsed laser ablation of a graphite target using a train of 10-ps duration pulses at 1064 nm in different pressures of high-purity Ar gas. It is ...