VolverExaminar Artículos, Comunicaciones, Libros por departamento (eus.) "Fisika aplikatua II"
Mostrando ítems 21-40 de 47
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Infrared emissivity of copper-alloyed spinel black coatings for concentrated solar power systems
González de Arrieta Martinez, Iñigo
; Echániz Ariceta, Telmo ; ; ; ; Igartua Aldamiz, Josu Mirena ; ; López, Gabriel Alejandro (Elsevier, 2019-05-24)
The directional spectral emissivities of four new copper-alloyed spinel coatings for concentrated solar power applications were measured up to 800 °C and compared Pyromark 2500®, deposited in the same conditions on Inconel ... -
Infrared emissivity of reduced-activation Eurofer 97 for fusion reactor applications
Echániz Ariceta, Telmo; González de Arrieta Martinez, Iñigo ; ; ; ; ; López, Gabriel Alejandro (Elsevier, 2021-02-28)
The spectral directional emissivity of Eurofer 97 is reported between 423 and 873 K for two surface states. Total hemispherical data has been calculated by numerical integration of the measured data and compared to the ... -
Isothermal oxidation kinetics of nitrided Ti-6Al-4V studied by infrared emissivity
González de Arrieta Martinez, Iñigo; ; ; Echániz Ariceta, Telmo ; (Elsevier, 2020-08-15)
The oxidation kinetics of Ti-6Al-4V samples nitrided in forming gas (N2+5%H2) between 520 and 805 °C is investigated using infrared emissivity measurements. Several kinetic exponents have been observed depending on temperature ... -
Low temperature texture development in Nd 2 Fe 14 B/ α -Fe nanocomposite magnets via equal channel angular pressing
(American Institute of Physiscs, 2018-05)While suitable texture has been developed in Nd2Fe14B/alpha-Fe nanocomposites via thermomechanical processing methods such as die upsetting by incorporating low melting point eutectic Nd-Cu additives, significant grain ... -
Magnetic and Photoluminescent Sensors Based on Metal-Organic Frameworks Built up from 2-aminoisonicotinate
García Valdivia, Antonio A.; Pérez Yáñez, Sonia; García Fernández, José Antonio ; Fernández, Belén; ; Rodríguez Diéguez, Antonio (2020-06-01)
In this work, three isostructural metal-organic frameworks based on first row transition metal ions and 2-aminoisonicotinate (2ain) ligands, namely, {[M(mu-2ain)2]·DMF}n [MII=Co (1), Ni (2), Zn (3)], are evaluated for their ... -
Mesophase structure and behaviour in bulk and restricted geometry of a dimeric compound exhibiting a nematic–nematic transition
(Royal Society of Chemistry, 2016-07-28)We present structural studies of a dimeric compound composed of a central heptyl spacer linking two mesogens consisting of terphenyl units at which two adjacent fluoro groups are attached to each central ring. The terminal ... -
MIDAS: A Benchmarking Multi-Criteria Method for the Identification of Defective Anemometers in Wind Farms
Rabanal, Arkaitz; Ulacia Manterola, Alain; ; Sáenz Aguirre, Jon; Elosegui, Unai (MDPI, 2018-12-22)
A novel multi-criteria methodology for the identification of defective anemometers is shown in this paper with a benchmarking approach: it is called MIDAS: multi-technique identification of defective anemometers. The ... -
Ni–Ti-Hf High-Temperature Shape Memory Alloy: Measure of the Clausius-Clapeyron Coefficient Through Mechanical Spectroscopy
Pérez Cerrato, Mikel; Maass, B.; Nó Sánchez, María Luisa; San Juan Núñez, José María (Elsevier, 2021-03-05)
The martensitic transformation of Ni49.5Ti35.5Hf15 high temperature shape memory alloy is characterized by internal friction measurements. The temperatures for the reversible B2 <-> B19' transformation appear in the range ... -
Sensing Capacity in Dysprosium Metal & Organic Frameworks Based on 5-Aminoisophthalic Acid Ligand
(MDPI, 2022-04-28)Two novel metal-organic frameworks (MOFs), based on dysprosium as the metal and the 5-aminoisophthalic acid (5aip) ligand, have been solvothermally synthesized, with the aim of studying and modulating their luminescence ... -
Sensor Applications of Soft Magnetic Materials Based on Magneto-Impedance, Magneto-Elastic Resonance and Magneto-Electricity
; ; Kurlyandskaya, Galina V.; ; ; ; Lasheras Aransay, Andoni ; De Cos Elices, David ; (MDPI, 2014-04-25)
The outstanding properties of selected soft magnetic materials make them successful candidates for building high performance sensors. In this paper we present our recent work regarding different sensing technologies based ... -
Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate
; ; Castillo García, Oscar; Luque Arrebola, Antonio ; Rodríguez Diéguez, Antonio; (MDPI, 2021-01-04)
Herein, we report the magnetic and photoluminescence characterization of coordination polymers (CP) built from the combination of lanthanide(III) ions, pyrimidine-4,6-dicarboxylate (pmdc) ligand and a co-ligand with formula ... -
Strain Relaxation in Cu-Al-Ni Shape Memory Alloys Studied by in Situ Neutron Diffraction Experiments
; López Echarri, Ángel María; ; Nó Sánchez, María Luisa; Brown, Donald W.; Balogh, Levente; Breczewski Filberek, Tomasz; San Juan Núñez, José María (American Institute of Physics, 2019-02-28)
In situ neutron diffraction is used to study the strain relaxation on a single crystal and other powdered Cu-Al-Ni shape memory alloys (SMAs) around martensitic transformation temperatures. This work is focused on the ... -
Stress-assisted atomic diffusion in metastable austenite D03 phase of Cu-Al-Be shape memory alloys
López Ferreño, Iñaki; Breczewski Filberek, Tomasz; López, Gabriel Alejandro; Nó Sánchez, María Luisa; San Juan Núñez, José María (Pergamon-Elsevier, 2016-11)
Cu-Al-based shape memory alloys are firm candidates to be used up to 473 K. The main limiting aspect is the activation of diffusion processes in the metastable austenite phase, which drive the alloy decomposition. In the ... -
Study of the Phase Transitions in the Binary System NPG-TRIS for Thermal Energy Storage Applications
Santos-Moreno, Sergio; Doppiu, Stefania; López, Gabriel Alejandro; Marinova, Nevena; Serrano, Ángel; Silveira, Elena; Palomo del Barrio, Elena (MDPI, 2020-03-05)
Neopentylglycol (NPG) and tris(hydroxymethyl)aminomethane (TRIS) are promising phase change materials (PCMs) for thermal energy storage (TES) applications. These molecules undergo reversible solid-solid phase transitions ... -
Testing the Applicability of 119Sn Mössbauer Spectroscopy for the Internal Stress Study in Ternary and Co-Doped Ni-Mn-Sn Metamagnetic Alloys
Unzueta Solozabal, Iraultza; López-García, J.; Sánchez-Alarcos, V.; Recarte, V.; Pérez-Landazábal, J. I.; Rodríguez-Velamazán, J. A.; ; ; Plazaola Muguruza, Fernando (MDPI, 2021-03-09)
The influence of both the Co addition and the internal stress on the atomic level magnetism is comparatively studied in Ni50Mn37Sn13 and Ni45Mn38Sn13Co4 alloys by magnetic measurements and 119Sn Mössbauer spectroscopy. The ... -
The Dynamics of Digits: Calculating Pi with Galperin’s Billiards
(MDPI, 2020-04-02)In Galperin billiards, two balls colliding with a hard wall form an analog calculator for the digits of the number π . This classical, one-dimensional three-body system (counting the hard wall) calculates the digits of π ... -
The Influence of Thermal History on the Multistage Transformation of NiTi Shape-Memory Alloys
; López Echarri, Ángel María; Breczewski Filberek, Tomasz; López, Gabriel Alejandro; López Ferreño, Iñaki; Nó Sánchez, María Luisa; San Juan Núñez, José María (MDPI, 2018-04)
The multistage martensitic phase transformation of a polycrystalline NiTi shape-memory alloy (50.3 at. %Ni-49.7 at. % Ti) has been studied by means of calorimetric measurements. After a conventional thermal treatment ... -
The Sailor diagram – A new diagram for the verification of two-dimensional vector data from multiple models
Sáenz Aguirre, Jon; ; ; ; ; Ulazia Manterola, Alain (Copernicus Gesellschaft, 2020-07-15)
A new diagram is proposed for the verification of vector quantities generated by multiple models against a set of observations. It has been designed with the objective, as in the Taylor diagram, of providing a visual ... -
Thermal radiative properties of electron-beam-melted and mechanically alloyed V-4Cr-4Ti based alloys between 200 and 750 ºC
Echániz Ariceta, Telmo; González de Arrieta Martinez, Iñigo ; ; Urcelay Olabarria, Irene ; Igartua Aldamiz, Josu Mirena ; ; ; ; ; ; ; López, Gabriel Alejandro (Elsevier, 2018-11-02)
The directional spectral emissivities of two V-4Cr-4Ti family alloys, candidate structural materials for fusion first wall/blanket applications, were measured between 200 °C and their working temperatures (700–750 °C), ... -
Thermal treatments and transformation behavior of Cu–Al–Be shape memory alloys
; ; ; ; ; San Juan Núñez, José María (Elsevier, 2013-11-15)
Among the different Cu-based shape memory alloys, the Cu–Al–Be family exhibits a particular technological interest for intermediate and low temperature applications. In this work we studied the martensitic transformation ...