Listar por autoría "5169584c-3492-48a3-9422-1c9e8d64389e"
Mostrando ítems 1-20 de 25
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Characterization of silica–water nanofluids dispersed with an ultrasound probe: A study of their physical properties and stability
Mondragon, Rosa; Juliá Bolívar, José Enrique; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos Elsevier (2012)The stability and agglomeration state of nanofluids are key parameters for their use in different applications. Silica nanofluids were prepared by dispersing the nanoparticles in distilled water using an ultrasonic probe, ... -
Ciclo térmico para la obtención de una ferrita de Ni-Zn: (I) Diseño de la etapa de sinterización
Barba-Juan, Antonio; Clausell-Terol, Carolina; Monzó Fuster, María; Jarque Fonfría, Juan Carlos Sociedad Española de Cerámica y Vidrio (2008)Las piezas cerámicas obtenidas a partir de polvos de ferritas de composición (Cu0.12Ni0.23Zn0.65)Fe2O4 destacan como absorbentes de radiación electromagnética entre las ferritas de Ni-Zn dopadas con Cu, impidiendo ... -
Ciclo térmico para la obtención de una ferrita de Ni-Zn: (II) Influencia de la etapa de enfriamiento
Barba-Juan, Antonio; Clausell-Terol, Carolina; Monzó Fuster, María; Jarque Fonfría, Juan Carlos Sociedad Española de Cerámica y Vidrio (2008)Las piezas cerámicas obtenidas a partir de polvos de ferritas de composición (Cu0.12Ni0.23Zn0.65)Fe2O4 destacan como absorbentes de radiación electromagnética entre las ferritas de Ni-Zn dopadas con Cu, impidiendo ... -
Compositional effects on the crosslink density of Ca–(Mg)–(Y)–Si–Al–oxyfluoronitride glasses
Clausell-Terol, Carolina; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos; García Bellés, Àngel R.; Pomeroy, M. J.; Hampshire, S. Wiley (2017-09)The effects of fluorine and nitrogen substitution for oxygen in aluminosilicate glasses, effectively oxyfluoronitride (OFN) glasses, modified by calcium, calcium–yttrium or calcium–magnesium on thermal and physical/mechanical ... -
Determination of the packing fraction of silica naoparticles from the rheological and viscoelastic measurements of nanofluids
Mondragon, Rosa; Juliá Bolívar, José Enrique; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos elsevier (2012-10)Nanofluids have become of great interest due to the excellent properties and reduced size of nanoparticles making them useful for different applications. The agglomeration of nanoparticles depends on the interparticle ... -
Effect of average grain size and sintered relative density on the imaginary part – µ″ of the complex magnetic permeability of (Cu0.12Ni0.23Zn0.65)Fe2O4 system
Clausell-Terol, Carolina; Barba-Juan, Antonio; Nuño, Luis; Jarque Fonfría, Juan Carlos Elsevier (2016)The influence of the sintered microstructure on the electromagnetic properties of Cu-doped NiZn ferrites were investigated. Two of the main variables of the thermal cycle have been modified: the maximum sintering temperature ... -
Effect of slurry properties and operational conditions on the structure and properties of porcelain tile granules dried in an acoustic levitator
Mondragon, Rosa; Jarque Fonfría, Juan Carlos; Juliá Bolívar, José Enrique; Hernandez, Leonor; Barba-Juan, Antonio Elsevier (2012)Spray-drying is a unit operation highly important in many industrial applications. In this work, the influence of the drying conditions on the final grain properties has been investigated in single droplet experiments.Porcelain ... -
Electrokinetic and rheological properties of highly concentrated kaolin dispersions: Influence of particle volume fraction and dispersant concentration
José Luis, Amorós Albaro; Beltrán Porcar, Vicente; Sanz-Solana, Vicente; Jarque Fonfría, Juan Carlos Elsevier (2010)An industrial kaolin was selected and characterised. Different dispersions were prepared with solids volume fractions between φ{symbol} = 0.20 and φ{symbol} = 0.47 in the presence of sodium silicate (between X<sub>s</sub> ... -
Fracture properties of spray-dried powder compacts: Effect of granule size
José Luis, Amorós Albaro; Cantavella Soler, Vicente; Jarque Fonfría, Juan Carlos; Feliu Mingarro, Carlos Elsevier (2008)Inappropriate mechanical properties of spray-dried powder compacts lead to significant green product losses, entailing considerable costs in ceramic tile manufacture as well as serious environmental problems. In addition, ... -
Green strength testing of pressed compacts: An analysis of the different methods
José Luis, Amorós Albaro; Cantavella Soler, Vicente; Jarque Fonfría, Juan Carlos; Feliu Mingarro, Carlos Elsevier (2008)This paper presents a comparative study of three- and four-point bending tests and diametral compression (DC) tests, used to measure the mechanical strength of green pressed compacts. The study has been conducted on pressed ... -
Influence of Particle Size on the Drying Kinetics of Single Droplets Containing Mixtures of Nanoparticles and Microparticles: Modeling and Pilot-Scale Validation
Mondragon, Rosa; Juliá Bolívar, José Enrique; Hernandez, Leonor; Jarque Fonfría, Juan Carlos Taylor & Francis (2013-05-03)The particle size of the primary particles is an important parameter influencing the drying behavior of droplets. In this work, the influence of particle size on the drying kinetics and grain properties was analyzed for ... -
Influence of the particle size on the microstructure and mechanical properties of grains containing mixtures of nanoparticles and microparticles: Levitator tests and pilot-scaled validation
Mondragon, Rosa; Juliá Bolívar, José Enrique; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos Elsevier (2013)The spray drying process is used in many industrial applications. However, different grain properties can be desirable depending on the later use of the powders produced. In this work the influence of the particle size on ... -
Kinetic model of the dissolution process of a zirconium white frit. Influence of the temperature
Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos; Orduña, Mónica; Gazulla Barreda, Maria Fernanda Elsevier (2015)The dissolution of a zirconium white frit has been studied in order to know the kinetics of the process. The concentrations of five cations (Ca, Mg, Zn, Si and B) have been determined by ICP-OES after carrying out the ... -
Magnetic complex permeability (imaginary part) dependence on the microstructure of a Cu-doped Ni–Zn-polycrystalline sintered ferrite
Barba-Juan, Antonio; Clausell-Terol, Carolina; Jarque Fonfría, Juan Carlos; Nuño, Luis Elsevier (2020-07)In this study, the effective complex magnetic permeability-imaginary part of a Cu doped-NiZn polycrystalline ferrite used as EMI suppressor has been quantitatively related to microstructural parameters. It has been observed ... -
Microstructure and mechanical properties of grains of silica nanofluids dried in an acoustic levitator
Mondragon, Rosa; Juliá Bolívar, José Enrique; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos Elsevier (2012)The microstructure and mechanical properties of spray-dried grains are key factors in many applications. In this work single droplets of silica nanofluids were dried in an acoustic levitator under different experimental ... -
Modeling of Drying Curves of Silica Nanofluid Droplets Dried in an Acoustic Levitator Using the Reaction Engineering Approach (REA) Model
Mondragon, Rosa; Juliá Bolívar, José Enrique; Hernandez, Leonor; Jarque Fonfría, Juan Carlos Taylor & Francis (2013)The use of nanoparticles has become of great interest in different industrial applications. The spray drying of nanofluids forms nanostructured grains, preserving the nanoparticle properties. In this work, individual ... -
Non-isothermal modeling of drying kinetics of ceramic tiles
Jarque Fonfría, Juan Carlos; Segarra Ferrando, Carmen; Cantavella Soler, Vicente; Mondragon, Rosa Taylor & Francis (2016)The present study has been undertaken to optimize the drying stage in ceramic tile manufacture. Tests were conducted to determine drying kinetics, establishing how air temperature and relative humidity influenced this ... -
Obtainment of nanoparticulate CuNiZn ferrite powder by high-energy milling
Barba-Juan, Antonio; Clausell-Terol, Carolina; Jarque Fonfría, Juan Carlos; Monzó Fuster, María The Ceramic Society of Japan (2012-08)This study was undertaken to obtain nanoparticulate CuNiZn ferrite powder by high-energy milling, as this is an approach that could potentially be scaled up for industrial use. Such nanometric particles may be expected to ... -
El proceso de secado por atomización: formación de gránulos y cinética de secado de gotas
Mondragon, Rosa; Juliá Bolívar, José Enrique; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos Sociedad Española de Cerámica y Vídrio (2013-07)Spray drying is a unit operation very common in many industrial processes. For each particular application, the resulting granulated material must possess determined properties that depend on the conditions in which the ... -
Single droplet drying of detergents: Experimentation and modelling
Hernández, Borja; Mondragon, Rosa; Pinto, Mark A.; Hernandez, Leonor; Juliá Bolívar, José Enrique; Jarque Fonfría, Juan Carlos; chiva, sergio; Martin, Mariano Elsevier (2021-03-03)This study evaluates the single droplet drying (SDD) of detergents. Experimental data are used to validate a theoretical multistage model. The experiments are carried out in an acoustic levitator analysing six different ...