D. Busquets-MataixUniversitat Politècnica de València | UPV · Institute of Materials Technology (ITM)
D. Busquets-Mataix
PhD
About
108
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Introduction
D. Busquets-Mataix currently works at the Institute of Materials Technology (ITM), Universitat Politècnica de València. D. does research in Materials Engineering, Materials Science and Nanotechnology.
Publications
Publications (108)
Al2O3/TZ-3YS coatings developed by suspension plasma spraying were studied in the present work. Mechanical and thermal characterization was realized to evaluate the suitability of thermal barrier coatings. In addition, SiC particle reinforcement was evaluated for its effect on the mechanical properties of the coating. The problem with SiC reinforce...
Today, in industry, laser-based additive manufacturing (LAM) is used to produce high-value parts of very complex designs that are not manufacturable by conventional technologies; this process’ low production throughput and high cost prevent it from being used more extensively. One way to exploit the benefits of LAM in industry is to have it combine...
The improvement of high temperature materials with lower heat transfer coefficients lead to the development of thermal barrier coatings (TBCs). One of the most widely used materials for thermal barrier coatings is Y2O3 stabilized ZrO2 (Y-TZP) because of its excellent shock resistance, low thermal conductivity, and relatively high coefficient of the...
Electroless Ni-Mo-P coatings were deposited onto ceramic tiles in order to be employed as electrodes for the electrodeposition of ZnO and Cu2O heterojunction layers. Varying conditions, such as duration, annealing of the electroless coating and applied potential, and duration for ZnO electrodeposition were studied in order to optimize the propertie...
Ceramic substrates were metallized with a Ni-Mo-P electroless coating and further modified with a polypyrrole (PPy) coating by the electrodeposition method. The properties of the polypyrrole coating were studied with the addition of a graphene oxide (GO) nanomaterial prior to the electrodeposition and its reduction degree. Fourier Transform Infrare...
Nanostructured polypyrrole coating was applied on carbon paper via simple dip-coating and electrochemical approach. Hybridization with nanocarbon materials (graphene oxide (GO) and multi-walled carbon nanotubes (MWCNTs)) and their effect as an anchoring hybrid layer for the growth of polypyrrole towards improving electrochemical properties are stud...
Graphene oxide (GO)-modified polypyrrole (PPy) coatings were obtained by electrochemical methods in the presence of the anionic surfactant, sodium dodecyl sulfate (SDS). The structure, morphology, and electrochemical properties of the coatings were assessed by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, scanning electron mic...
In this paper, ZnO electrodeposition was studied with the presence of graphene oxide (GO) exploited as a possible structure-directing agent. The effect of deposition potential and duration on the morphology and structure of ZnO was analyzed. The morphology and structure of the hybrids was analyzed by Raman spectroscopy, X-ray diffraction (XRD), and...
A p-Cu2O/n-ZnO heterojunction grown on fluorine-doped tin oxide (FTO) substrate is reported by a combined low-cost approach employing tape-casting of ZnO layer and subsequent electrochemical deposition of Cu2O layer. Graphene oxide (GO) nanosheets were employed as nanofiller for the ZnO matrix. Moreover, a ZnO buffer layer was inserted at the inter...
ZnO-nanostructured films were obtained by electrodeposition in the presence of varying content of graphene oxide (GO) in reduced (rGO) and non-reduced state. The hybridized ZnO nanostructures were studied by X-ray diffraction measurements, scanning electron microscopy, atomic force microscopy and Raman spectroscopy and transmittance measurements. T...
The electrodeposition of cuprous oxide (Cu2O) onto FTO-coated glass substrate was studied by using a statistical approach in order to control the Cu2O morphology and optical properties. The factorial design considered four electrodeposition conditions at two representative levels as input variables (electrolyte temperature and pH, deposition potent...
Novel hybrid core-shell nanoarchitectures were fabricated by a simple two-step electrochemical approach: first ZnO nanorod core was electrodeposited from Zn(NO3)2 solution; further, the core nanoarray was coated with a shell based on polypyrrole hybridized with graphene oxide by electropolymerization. The properties of the core/shell nanoarchitectu...
We introduce an innovative approach to the simultaneous control of growth mode and magnetotransport properties of manganite thin films, based on an easy-to-implement film/substrate interface engineering. The deposition of a manganite seed layer and the optimization of the substrate temperature allows a persistent bi-dimensional epitaxy and robust f...
Its unique nanostructure and extraordinary thermal, mechanical, and electrical properties such as good biocompatibility, high-surface area, excellent electrical conductivity, electron mobility at room temperature, and flexibility have made graphene a popular research subject in the recent past in many fields such as batteries, supercapacitors, fuel...
Its unique nanostructure and extraordinary thermal, mechanical, and electrical properties such as good biocompatibility, high-surface area, excellent electrical conductivity, electron mobility at room temperature, and flexibility have made graphene a popular research subject in the recent past in many fields such as batteries, supercapacitors, fuel...
Since it was first published the conception of underwater glider by H. Stommel (1989), many designs have been proposed based on the variable buoyancy-gliding principle for application in underwater vehicles. Underwater gliders take advantage of the differential buoyancy of a body submerged in a fluid, the Archimedes principle, for converting part o...
With the aim of advance in the use of off-the-shelf low cost electronic components for application in the control of all the subsystems, for application in the underwater glider Alba-14, it has been designed a multi-state control. A multi-mode hybrid control system associated to the multiple buoyancy based propulsion technique implemented in the Al...
With the aim of providing more dynamic capacity to a buoyancy based propulsion
vehicle, it has been proposed in previous works a dual buoyancy engine for application in underwater gliders. In this paper, CFD analysis as well as expected features of the vehicle Alba-14 in base of the proposed configuration are presented.
The fabrication of whole Al-doped ZnO nanostructured electrodes is reported by a two-step technology. Magnetron sputtered Al-doped ZnO (AZO) films were investigated as seeding substrates for the electrodeposition of Al-doped ZnO nanorod arrays. The nucleation, density, morphological and structural properties of Al-doped ZnO NRAs were analyzed as a...
A fast approach based on microwave technology was employed for the sintering of novel composites of alumina and using graphene oxide (GO) as susceptor. The thermal stability and structure of GO materials produced by chemical oxidation of graphite were characterized. The morphology, structure and mechanical properties of the composites sintered by m...
A simple chemical approach was employed to reduce graphene oxide in order to fabricate electrode coatings in close correlation with industrial production standards for supercapacitors. The morphology, structure, thermal stability and the residual oxygen functional groups in chemically reduced graphene oxide were analyzed. Cyclic voltammetry and cha...
Large areas of reduced graphene oxide (rGO) films were obtained by electrophoretic deposition onto insulating glass substrate. ZnO nanostructures were directly grown on the rGO films by single-step electrodeposition method. The properties of ZnO nanostructures were evaluated as a function of deposition mode onto rGO electrodes with different stoich...
Green reduction of graphene oxide (GO) functionalized with 3-aminopropyltriethoxysilane and 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride/N-hydroxysuccinimide was performed by using ascorbic acid and sodium bisulfite. The obtained materials were characterized by thermo-gravimetric analysis, transmission electron microscopy, X-ray dif...
Surface studies are reported for the deposition of ZnO nanostructures by one-step electrodeposition method. The electrosynthesis was perfomed at the surface of tin doped indium oxide coated glass substrates in the absence of any buffer layer. The growth of ZnO nanostructures was investigated with the morphology of substrate and the deposition mode....
The concept of ALBA vehicles has been developed under the consideration of long term autonomous instrumentation for oceans research applications. Among their prospective missions, there are three of particular interests: water column survey, early event detection (oil spill and HAB) and water sampling, The concept of hybrid vehicles has been alread...
This study reports a novel method of tailoring the properties of ZnO nanostructures by electrodeposition in presence of chemically-reduced graphene oxide (rGO). The coupled electrochemical and chemical reduction of graphene oxide resulted in few-layer graphene-based material. The presence of rGO in the electrolytic bath showed a marked influence on...
We investigated the growth mechanism of pentacene thin films on La0.7Sr0.3MnO3. A diffusion limited, thermally activated growth was found. Pentacene molecules formed flat islands that were a few microns in size and whose growth during deposition showed a strong anisotropy. We extracted a nucleation energy of 0.65 ± 0.05 eV and a diffusion barrier e...
We propose a model for the consistent interpretation of the transport behavior of manganese perovskites in both the metallic and insulating regimes. The concept of polarons as charge carriers in the metallic ferromagnetic phase of manganites also solves the conflict between transport models, which usually neglects polaron effects in the metallic ph...
Reducing the stiffness of titanium is an important issue to improve the behavior of this material when working together with bone, which can be achieved by generating a porous structure. The aim of this research was to analyze the porosity and mechanical behavior of Ti-6Al-4V porous samples developed by spherical powder sintering. Four different mi...
Transport characterizations of epitaxial La0.7Sr0.3MnO3 thin films in the
thickness range 5-40 nm and 25-410 K temperature interval have been accurately
collected. We show that taking into account polaronic effects allows to achieve
the best ever fitting of the transport curves in the whole temperature range.
The Current Carriers Density Collapse p...
Green reduction of graphene oxide (GO) was performed using ascorbic acid (AA) in the presence of poly(sodium 4-styrenesulfonate), which resulted in reduced graphene oxide (PSS–rGO) with excellent solubility and stability in water. Large rGO sheets of 4 μm2 area and 1.1-nm thickness were obtained. The measurements showed that noncovalent functionali...
We report on the optimisation of the growth conditions of manganite
La0.7Sr0.3MnO3 (LSMO) thin films prepared by Channel Spark Ablation (CSA). CSA
belongs to pulsed electron deposition methods and its energetic and deposition
parameters are quite similar to those of pulsed laser deposition. The method
has been already proven to provide manganite fi...
Objectives: The aim of this study was to evaluate bond strengths of zirconium-oxide (zirconia) ceramic and a selection of different composite resin cements.
Study Design: 130 Lava TM cylinders were fabricated. The cylinders were sandblasted with 80 µm aluminium oxide or silica coated with CoJet Sand. Silane, and bonding agent and/or Clearfil Ceram...
Porous Ti6Al4V samples were produced by microsphere sintering. The Zero-Order Reaction Rate Model and Transition State Theory were used to model the sintering process and to estimate the bending strength of the porous samples developed. The evolution of the surface area during the sintering process was used to obtain sintering parameters (sintering...
Two differently sized microspheres were sintered at 1300 °C and 1400 °C from 2 to 8 h in stoneware, alumina, yttria and zirconia moulds. Selecting the appropriate material to be used as a mould remains a critical issue given titanium's high reactivity at elevated temperatures. Optimum mechanical properties were obtained when sintering the smallest...
In the present work an effective technique to synthesize large-scale c-axis oriented ZnO nanorod (NR) arrays is presented. The manuscript reports a single-step cathodic electrodeposition, either in aqueous and organic electrolytes, to fill up ultra-thin anodic nanoporous alumina templates. Prior to growing, self-ordered hexagonal array of cylindric...
Single-crystal ZnO nanowires long up to several microns were fabricated by one-step electrochemical deposition. A template-based process employing track-etched polycarbonate (TE-PC) membranes was used for this purpose. The morphology and the structure characteristics of the ZnO nanowires were analyzed by means of Scanning Electron Microscopy (SEM),...
In this work, the finite element method (FEM) has been applied to the acoustic analysis of multichamber silencers with microperforated and constant impedance central pipes. A search of new designs based on the use of two different duct surfaces is presented. On one hand, microperforated surfaces exhibit an effective performance at low frequencies,...
Porous titanium specimens have been produced by means of the space holder method. Titanium grade 3 (TiCP3) has been used as material and ammonium bicarbonate as spacer. Process parameters (compaction pressure, metal grain size range and spacer volume) influence on porosity morphology and distribution and bending strength has been analysed. The resu...
Co/Cu-multilayer nanowires can be exploited to develop magnetoresistive sensors. One of the easiest methods for their production is filling nanoporous templates by pulsed-electrodeposition (PED) from a single bath. Multiple parameters effecting the growth of these nano-objects must be controlled to tailor their properties. In this study, the deposi...
Nanocrystalline tungsten carbide has been obtained by reduction/carburization at low temperature from precursors obtained by freeze-drying of aqueous solutions. Nanocrystalline WC powders with a adequate content of carbon were mixed with submicrometric Cobalt powder (12 wt.%), obtained by same synthesis method, and sintered in vacuum furnace. The c...
The aim of the present work is to establish the relationship between laser cladding (LC) process parameters (power, process speed, and powder feed rate) and AISI D2 tool steel metallurgical transformations, with the objective of optimizing the processing conditions during real reparation. It has been deposited H13 tool steel powder on some steel su...
The fabrication of Ti composite coatings reinforced with TiB2 particles by means of laser cladding produces in most cases the melting and formation of reaction phases. Although the formation of these new phases depend on many factors (processing parameters, powders used, etc), the composition of the substrate plays also an important role. Therefore...
The aim of the present work is to establish the relationship between laser cladding process parameters (Power, Process Speed and Powder feed rate) and AISI D2 tool steel metallurgical transformations, with the objective of optimizing the processing conditions during real reparation. It has been deposited H13 tool steel powder on some steel substrat...
Titanium metal matrix composite coatings (MMC) are considered to be important candidates for high wear resistance applications. Laser cladding (LC) by coaxial powder feeding is an advanced coating manufacturing process, which involves laser processing fine powders into components directly from computer aided design (CAD) model.In this study, the LC...
With the development of finer hardmetals, the study of mechanical properties of the different constituents down the micrometric level is a question of concern for materials optimization. Nanoindentation has been developed in last years in order to cope with mechanical characterisation at the nanolevel, but difficulties on phase detection are an iss...
In this work the densification, microstructural development and mechanical properties of ultrafine and nanocrystalline WC-12Co mixtures, consolidated by spark plasma sintering (SPS) has been studied. Also, this process is compared to hot isostatic pressing (HIP) and conventional sintering in vacuum. Ultrafine and nanocrystalline mixtures obtained b...
In this work the sintering behaviour titanium and Ti -6Al-4V titanium alloy porous materials prepared by the space holder method have been analysed in terms of mechanical properties and microstructural characterisation. The porous materials were processed under vacuum and different sintering cycles analysed. Other variables studied were space holde...
A new class of materials is being installed in railway brake blocks to substitute classic cast iron in order to reduce the rolling noise produced by the roughness of the tread-wheel surface. The tribological properties of cast iron and Fe–Cu–Cr–graphite sintered alloy brake shoes were analyzed. Kinetic friction coefficient (μ) and wear were monitor...
The excellent properties of Ti have resulted in its generalised use for bone implants. However, Ti is very stiff in comparison with human cortical bone, and this creates problems of bone weakening and loosening of the implant. This article discusses the mechanical properties (flexural and compressive strength, and stiffness) of porous Ti-6Al-4V spe...
The use of metal matrix composites coatings (MMCs) on titanium offers potential advantages for wear resistance applications. In fact, together with the high specific strength, high temperature capability and oxidation resistance of titanium, an increase in hardness and wear behaviour is expected to be provided by the ceramic reinforcement. A surfac...
Further osseous implants study, is essential to cope with an aging population and long-term problems. Titanium alloys, like Ti6Al4V, although used for their mechanical properties and biocompatibility, are limited due to their lack of similarity of their stiffness with the stiffness of bones. The main objective of this work is to develop porous tita...
WC-12Co cemented carbides with or without addition of Cr2C3 /VC grain growth inhibitors were consolidated with two different techniques: conventional sintering in vacuum and spark plasma sintering from nanocristallyne powders with the goal to investigate their sliding wear behavior. The sliding wear resistance was evaluated by performing of unlubri...
Unlabelled:
To evaluate bond strengths of different resin cements to two aluminum oxide-based ceramics.
Methods:
One hundred ten ceramic cylinders were produced and given four different surface treatments. Resin cement cylinders were then bonded to the ceramic cylinders using different resin cements and the bond strength was determined by shear...
This study deals with the feasibility of using boron carbide (B4C) as reinforcement for aluminum matrix composites (AMCs) obtained by solid-state processes (powder metallurgy and extrusion). Two different reinforcements were considered: B4C as the object of this study and SiC for direct comparison of results. Aluminum alloy AA6061 was used as matri...
As the credit squeeze threatens many small companies in the PM supply chain, some are looking to pastures new, and hi-tech pastures at that, for inspiration, new business directions and profitability…
In this paper a comparative study by means of a statistical analysis of the main process variables affecting ZnO crystal electrodeposition is presented. ZnO crystals were deposited on two different substrates, silicon wafer and indium tin oxide. The control variables were substrate types, electrolyte concentration, temperature, exposition time and...
In this work ultrafine and nanocrystalline WC-Co mixtures were obtained by low energy milling in planetary ball mill. The effect of the processing conditions on the reduction and distribution of the grain sizes and the internal strains level were studied. The characterisation of the powder mixtures was performed by means of scanning and transmissio...
Porous materials are biomedical devices used for bone integration and replacement. Because of this application, pore size, shape and connectivity are modified in order to enhance tissue in-growth. Also, porosity influences mechanical strength and stiffness, this last parameter being critical to avoid "stress shielding" effect on the bone due to too...
In this work the sintering behaviour of fine, ultrafine and nanocrystalline WC-12Co mixtures obtained by high energy milling, as well as commercial nanopowders, have been studied, in order to evaluate the effect of the particle size and the powder processing, in the densification, microstructural development and mechanical properties of the final p...
In this work the sintering behaviour of fine, ultrafine and nanocrystalline WC-12Co mixtures obtained by high energy milling, as well as commercial nanopowders, have been studied, in order to evaluate the effect of the particle size and the powder processing, in the densification, microstructural development and mechanical properties of the final p...
One of the most important application areas of porous materials is bioengineering. For this application, together with the appropriate material, the fabrication of a scaffold with defined and controlled pore size, shape and connectivity is of paramount importance for the proper tissue ingrowth and development, for instance in bone replacement. In t...
Titanium alloys possess one of the highest strength-to-weight ratio of metallic materials but, on the other hand, they lack of good wear behaviour. This fact hinders their use in many industrial applications. One possible way to improve their wear behaviour is the coating with appropriate alloy of composite layers. In this study, Ti6Al4V alloy is c...
The high reactivity of titanium and the facility of the same one to form intermetallics makes difficult obtaining composites with this material and brings the need in any case of covering the principal fibres used as reinforcement. To obtain composites of titanium reinforced with ceramic particles is proposed in this paper, and for this reason it t...
The high reactivity of titanium and the facility of the same one to form intermetallics makes difficult obtaining composites with this material and brings the need in any case of covering the principal fibres used as reinforcement. To obtain composites of titanium reinforced with ceramic particles is proposed in this paper, and for this reason it t...
In this work, Co/Cu nanowires are fabricated by pulsed electrodeposition from a single bath solution containing both Co and Cu ions. Alternate Co and Cu layers are deposited into the nanopores of track etched polycarbonate templates. Although the feasibility of this process is generally recognized, some important issues such as process reproducibil...
In this work arrays of Co/Cu multilayer nanowires were fabricated by electrodeposition to develop giant magnetoresistive sensors. Structure and morphology defects within 6 μm long portions of single nanowires have been probed by electron and ion-beam microscopies. It has been discovered that the most recurrent growth defect is a tilt of the nanowir...