Examinar por departamento (cas.) "Física de la materia condensada"
Now showing items 41-56 of 56
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Stress-assisted atomic diffusion in metastable austenite D03 phase of Cu-Al-Be shape memory alloys
(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 Li metal anode surface. interaction with atmospheric gases and impact of impurities in electrochemistry
(2020-05-19)La ganancia de cuota del mercado de vehículos eléctricos es esencial si se pretenden mitigar las consecuencias del efecto invernadero causadas, entre otros factores, por las emisiones de gases de vehículos de motor térmico. ... -
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Studying the influence of substitutional elements on mechanical behavior of Alloy 718
(EDP Sciences, 2014)In nickel-based superalloys, substitutional solute species have a strong impact on in service mechanical properties as well as on oxidation and corrosion resistances. In alloy 718, recent studies carried out by tensile ... -
Surfaces and interfaces in thin-film and conventional li-ion batteries
(2019-10-22)En esta tesis doctoral titulada "Surfaces and Interfaces in Thin-Film and Conventional Li-ion Batteries" se presentan los resultados del trabajo experimental realizado en relación a materiales del estado del arte en baterías ... -
The aperiodic nature of mullite
(2018-11-30)Different methods were applied to investigate the vacancy and Al/Si order in mullite. At first the symmetry was analysed thoroughly to derive constraints on the vacancy distribution based on crystal chemical premises. On ... -
The Influence of Thermal History on the Multistage Transformation of NiTi Shape-Memory Alloys
(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 ... -
Thermal emissivity spectra and structural phase transitions of the eutectic Mg-51%Zn alloy: A candidate for thermal energy storage
(Elsevier, 2016-11-05)The thermal emissivity spectrum in the mid infrared range (3–21 μm) as well as its dependence on temperature between 225 and 320 °C has been obtained for the Mg-51%Zn (weight %) eutectic alloy, a candidate for thermal ... -
Thermal treatments and transformation behavior of Cu–Al–Be shape memory alloys
(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 ... -
Thermo-radiative and optical properties of a cutting tool based on polycrystalline cubic boron nitride (PCBN)
(IOP Publishing, 2016-04-27)The normal spectral emissivity of a cutting tool based on polycrystalline cubic boron nitride (PCBN) between 400 °C and 1000 °C has been measured. Its shape shows significant differences with respect to that of pure cubic ... -
Ti-Al intermetallics for aerospace applications: atomic relaxation processes,microstructure and mechanical properties at high temperature.
(2018-05-04)El presente trabajo de investigación se encuadra en la línea de "Materiales Intermetálicos para Altas Temperaturas" que se desarrolla en el Grupo de investigación en MetalurgiaFísica (GIMF) de los Dptos de Física de la ... -
Ultrahigh Superelastic Damping at the Nano-Scale: a Robust Phenomenon to Improve Smart MEMS Devices
(Elsevier, 2019-03)Micro and nano pillars of Copper-based shape memory alloys (SMAs) with feature sizes between about 2 mu m and 250 nm are known to exhibit ultra-high mechanical damping due to the nucleation and motion of stress-induced ... -
Unconventional spin texture of a topologically nontrivial semimetal Sb(110)
(IOP Publishing LTD, 2012-10-17)The surfaces of antimony are characterized by the presence of spin-split states within the projected bulk band gap and the Fermi contour is thus expected to exhibit a spin texture. Using spin-resolved density functional ... -
Universal Scaling Law for the Size Effect on Superelasticity at the Nanoscale Promotes the Use of Shape‐Memory Alloys in Stretchable Devices
(Wiley, 2020-02)Shape-memory alloys (SMAs) are the most stretchable metallic materials thanks to their superelastic behavior associated with the stress-induced martensitic transformation. This property makes SMAs of potential interest for ... -
Upgrading the Performance of Cholesteric Liquid Crystal Lasers: Improvement Margins and Limitations
(MDPI, 2017)The topic of cholesteric-liquid-crystal lasers is a rapidly expanding research area in the field of soft-matter photonics. The increasing interest in this field is due to the high versatility that these lasers may possibly ... -
Water Adsorption on the β-Dicalcium Silicate Surface from DFT Simulations
(MDPI, 2018-09-04)beta-dicalcium silicate (beta-Ca2SiO4 or beta-C2S in cement chemistry notation) is one of the most important minerals in cement. An improvement of its hydration rate would be the key point for developing environmentally-friendly ...