| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Rebholz, Claus
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Short-Time Magnetron Sputtering for the Development of Carbon–Palladium Nanocomposites
- 2024Asymmetric supercapacitors based on biomass-derived porous activated carbon (PAC)/1D manganese oxide (MnO2) electrodes with high power and energy densitiescitations
- 2023Improved thermolytic dehydrogenation of LiBH4 nanoconfined in few-layer graphene with different functionalitiescitations
- 2023Uniform Droplet Spraying of Magnesium Alloyscitations
- 2021Additive manufacturing of magnesium alloy using uniform droplet spraying: modeling of microstructure evolutioncitations
- 2021Synthesis of bulk reactive Ni–Al composites using high pressure torsioncitations
- 2020Effect of Pt nanoparticle decoration on the H2 storage performance of plasma-derived nanoporous graphenecitations
- 2018Novel combustion synthesis of carbon foam‑aluminum fluoride nanocomposite materialscitations
- 2018Novel combustion synthesis of carbon foam‑aluminum fluoride nanocomposite materialscitations
- 2018Needle grass array of nanostructured nickel cobalt sulfide electrode for clean energy generationcitations
- 2017Mechanics and energetics modeling of ball-milled metal foil and particle structurescitations
- 2017Solvothermal synthesis, nanostructural characterization and gas cryo-adsorption studies in a metal-organic framework (IRMOF-1) materialcitations
- 2017Solvothermal synthesis, nanostructural characterization and gas cryo-adsorption studies in a metal–organic framework (IRMOF-1) materialcitations
- 2014Spark ignitable ball milled powders of Al and Ni at NiAl compositioncitations
- 2013Fabrication, characterization and applications of novel nanoheater structurescitations
- 2012Broom-like and flower-like heterostructures of silver molybdate through pH controlled self assemblycitations
- 2012Tensile mechanical properties and hydraulic permeabilities of electrospun cellulose acetate fiber meshes.
- 2011Deposition and nanotribological characterization of Sub-100-nm thick protective Ti-based coatings for miniature applicationscitations
- 2011Textured VN coatings with Ag3VO4 solid lubricant reservoirscitations
- 2011Ultrasonic Consolidation and Ignition Characteristics of Thermite Compositescitations
- 2010Adaptive VN/Ag nanocomposite coatings with lubricious behavior from 25 to 1000 °ccitations
- 2009Tribological behavior of CrN and Al-Cr-N coatings
- 2009Modeling of the self-propagating reactions of nickel and aluminum multilayered foilscitations
- 2009The nanostructure, wear and corrosion performance of arc-evaporated CrBxNy nanocomposite coatingscitations
- 2008Tribological properties of twin electron-beam evaporated Cr-N and Al-Cr-N coatings under laboratory sliding and drill experimentscitations
- 2008Nanostructure, mechanical and tribological properties of reactive magnetron sputtered TiCx coatingscitations
- 2008Synthesis and characterization of Cr-B-N coatings deposited by reactive arc evaporationcitations
- 2006Nanostructural studies of PVD TiAlB coatingscitations
- 2005Characterisation and tribological evaluation of nitrogen-containing molybdenum-copper PVD metallic nanocomposite filmscitations
- 2002Evaluating the microstructure and performance of nanocomposite PVD TiAlBN coatingscitations
- 2002Electron spectroscopic studies of nanocomposite PVD TiAlBN coatingscitations
Places of action
| Organizations | Location | People |
|---|
article
Characterisation and tribological evaluation of nitrogen-containing molybdenum-copper PVD metallic nanocomposite films
Abstract
This paper reports on the structural, mechanical and tribological properties of molybdenum-copper nanocomposite films 'doped' with small amounts of nitrogen, which contain either no nitride phase (i.e. the nitrogen is held in interstitial solid solution, mainly in molybdenum) or small amounts of lower nitrides (i.e. Mo2N). All films were deposited on Si wafers, AISI M2 high speed steel and AISI 316 stainless steel by reactive sputtering using a hot-filament-enhanced dc unbalanced magnetron system. A systematic approach was adopted to investigate the evolution of metal/metal and ceramic/metal phase combinations with increasing nitrogen content (up to ∼ 40 at.% N) in the film. Coating composition and microstructure were determined by cross-sectional TEM, SEM and XPS. XRD was used to identify (where possible) metallic and metal-nitride phases. Mechanical properties such as hardness and elastic modulus were determined by low load Knoop and instrumented Vickers indentation measurements. Reciprocating sliding, micro-abrasion and impact tests were performed to assess tribological performance. It was found that increasing the nitrogen gas flow rate from 0 to 15 sccm (and therefore nitrogen content in the film from 0 to 24 at.% N), refined significantly the coating microstructure from columnar to a dense and more equiaxed morphology, increasing the hardness whilst maintaining (almost constant) elastic modulus values, close to that of molybdenum metal. Further increases in the nitrogen gas flow rate resulted in films that appeared to contain significant fractions of the Mo2N ceramic phase. SEM and cross-sectional TEM analyses of the film deposited at a nitrogen flow rate of 20 sccm (containing ∼36 at.% N) demonstrated a microstructure consisting of 50-100 nm wide columns, which contain small regions of contrast in dark-field images, of the order of 3-5 nm wide. A maximum hardness of 32 GPa and the highest hardness/modulus ratio was however found in the (predominantly metallic) film deposited at a nitrogen gas flow rate of ...