Browsing by UPNA Author "Rodríguez Trías, Rafael"
Now showing items 1-17 of 17
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Antibacterial functionalization of PVD coatings on ceramics
The application of surface treatments that incorporate silver or copper as antibacterial elements has become a common practice for a wide variety of medical devices and materials because of their effective activity against ... -
Characterization of two iron bullets from the royal ammunition factory of Eugi (Spain)
In this work, a comparative analysis of two iron bullets found in The Royal Ammunition Factory of Eugi in Navarra (Spain) was performed. Both bullets presented a spherical shape with a relatively good state of preservation, ... -
Chemical and mechanical stability of air annealed cathodic arc evaporated CrAlON coatings
This study reports the synthesis and characterization of ternary Cr-Al-O and quaternary Cr-Al-O-N coatings deposited by cathodic arc physical vapour deposition, for various nitrogen and oxygen mass flow ratios during the ... -
A comparative study in the tribological behavior of DLC coatings deposited by HiPIMS technology with positive pulses
During the last few decades, diamond-like carbon (DLC) coatings were widely used for tribological applications, being an effective tool for improving the performance and the useful life of different machining tools. Despite ... -
A comparative study of multifunctional coatings based on electrospun fibers with incorporated ZnO nanoparticles
In this work, polymeric fibers of polystyrene (PS) with incorporated ZnO nanoparticles have been deposited onto an aluminum alloy substrate (6061T6) by using the electrospinning technique. In order to optimize the deposition ... -
CrAlON CAE-PVD coatings for oxidation and wear protection of TZM alloys in FAST sintering applications
In this work CrAlO and CrAlO/CrAlN multilayers deposited by cathodic arc evaporation are evaluated as protective films in metal and ceramic powder FAST sintering tool dies fabricated in titanium-zirconium-molybdenum allows ... -
Desarrollo de nuevos procesos de fabricación de nanoestructuras para aplicaciones ópticas avanzadas basados en litografía por interferencia láser
En esta tesis doctoral se presentan varios procesos de fabricación de nanoestructuras periódicas mediante litografía por interferencia láser, desarrollados para diferentes aplicaciones. En la primera parte se muestra el ... -
Desarrollo de recubrimientos PVD cuaternarios de tipo nitruro, óxido y oxinitruro para aplicaciones de trabajo en caliente
La tesis consiste en una aportación en el campo de los recubrimientos PVD para aplicaciones en procesos de conformado y moldeo a alta temperatura. Para ello se ha abordado el estudio de una serie de familias de recubrimientos ... -
Designing multifunctional protective PVC electrospun fibers with tunable properties
In this work, the electrospinning technique is used for the fabrication of electrospun functional fibers with desired properties in order to show a superhydrophobic behavior. With the aim to obtain a coating with the best ... -
Effect of the temperature in the mechanical properties of austenite, ferrite and sigma phases of duplex stainless steels using hardness, microhardness and nanoindentation techniques
The aim of this work is to study the hardness of the ferrite, austenite and sigma phases of a UNS S32760 superduplex stainless steel submitted to different thermal treatments, thus leading to different percentages of the ... -
Electrospinning: a powerful tool to improve the corrosion resistance of metallic surfaces using nanofibrous coatings
The use of surface engineering techniques to tune-up the composition of nanostructured thin-films for developing functional coatings with advanced properties is a hot topic within the scientific community. The control of ... -
Evaluation of functionalized coatings for the prevention of ice accretion by using icing wind tunnel tests
Ice accretion presents serious safety issues, as airplanes are exposed to supercooled water droplets both on the ground and while flying through clouds in the troposphere. Prevention of icing is a main concern for both ... -
Functionalized electrospun fibers for the design of novel hydrophobic and anticorrosive surfaces
In this work, a novel coating was deposited on aluminum alloy samples by using a combination of electrospinning and chemical vapor deposition (CVD-silanization) techniques in order to create a functionalized film with an ... -
Hydrophobic and corrosion behavior of sol-gel hybrid coatings based on the combination of TiO2 NPs and fluorinated chains for aluminum alloys protection
In this work, layers of a sol-gel hybrid matrix doped with metal oxide nanoparticles (TiO2 NPs) have been deposited on flat samples of AA6061-T6 aluminum alloy using the dip-coating technique, with the aim of obtaining ... -
MEDSOL: strengthening capacities of south-Mediterranean HEIs in the field of solar energy by enhancing links among applied research, business and education
Se presenta el origen, los objetivos, los socios y el plan de trabajo del proyecto MEDSOL, de la acción K2. -
Modificación de la respuesta fotocatalítica y bactericida de recubrimientos PVD de óxido de titanio mediante tratamientos de implantación iónica de nitrógeno por inmersión en plasma (PIII)
El trabajo de tesis realizado tiene por objetivo profundizar en el conocimiento de las propiedades funcionales de los recubrimientos PVD de dióxido de titanio y específicamente en tratar de ampliar su respuesta fotocatalítica ... -
Multifunctional protective PVC-ZnO nanocomposite coatings deposited on aluminum alloys by electrospinning
This paper reports the use of the electrospinning technique for the synthesis of nanocomposite micro/nanofibers by combining a polymeric precursor with hydrophobic behavior like polyvinyl chloride (PVC) with nanoparticles ...