Exploració per tema "Synchrotron radiation"
Ara es mostren els items 1-18 de 18
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Austenite carbon enrichment and decomposition during quenching and tempering of high silicon high carbon bearing steel
(2023-02)
Article
Accés restringit per política de l'editorialThe addition of Si to steels is a well stablished method to delay cementite precipitation, allowing for carbon partitioning from martensite to retained austenite during tempering. It has been argued that carbon enrichment ... -
Commissioning of a beam screen test bench experiment with a future circular hadron collider type synchrotron radiation beam
(American Physical Society (APS), 2019-08-23)
Article
Accés obertCoping with synchrotron radiation (SR) that originated at superconducting bending magnets is one of the major challenges in the design of the vacuum beam pipes of hadron colliders. In the case of the Future Circular hadron ... -
Denser glasses relax faster: enhanced atomic mobility and anomalous particle displacement under in-situ high pressure compression of metallic glasses
(Elsevier, 2023-08-15)
Article
Accés obertDespite that metallic glasses are among the most studied metallic materials, still very little is known on the evolution of their unique structural, dynamical and elastic properties under compression, owing to the difficulty ... -
Effect of heat treatments on Inconel 625 fabricated by wire and arc additive manufacturing: an in situ synchrotron X-ray diffraction analysis
(2023-03-13)
Article
Accés obertThe effect of heat treatments on wire and arc additively manufactured Inconel 625 parts was investigated using in situ synchrotron X-ray diffraction and hardness testing. As-built samples revealed the presence of a γ-matrix ... -
Identification of reaction compounds in micrometric layers from gothic paintings using combined SR-XRD and SR-FTIR
(2009-07)
Article
Accés restringit per política de l'editorialSynchrotron radiation X-ray diffraction ( -SR-XRD) and Fourier transform infrared spectroscopy ( -SRFTIR) are used in the non-destructive identification of reaction and aging compounds from micrometric ancient painting ... -
Isothermal crystallization kinetics of poly(4-hydroxybutyrate) biopolymer
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-08-01)
Article
Accés obertThermal properties and crystallization kinetics of poly(4-hydroxybutyrate) (P4HB) have been studied. The polymer shows the typical complex melting behavior associated to different lamellar populations. Annealing processes ... -
Kinetics and crystallization path of a Fe-based metallic glass alloy
(2017-04-01)
Article
Accés obertThe thermal stability and the quantification of the different transformation processes involved in the overall crystallization of the Fe50Cr15Mo14C15B6 amorphous alloy were investigated by several characterization techniques. ... -
Micro infrared spectroscopy discrimination capability of compounds in complex matrices of thin layers in real sample coatings from artworks
(2015-01)
Article
Accés obertThe presence of coating on manufactures either to protect them from the environment, or to give them specific properties—as well as simply to change their aspect—has been shown to be a constant practise throughout history. ... -
New insights on blue pigments used in 15th century paintings by synchrotron radiation-based micro-FTIR and XRD
(2014-05-06)
Article
Accés obertThe blue pigments used on altarpieces in 15th Century in Catalonia and Crown of Aragon are principally the azurite mineral. To a lesser extent lapis lazuli, also of mineral origin and occasionally, in the background areas, ... -
Non-isothermal crystallization kinetics of poly(4-hydroxybutyrate) biopolymer
(2019-08-05)
Article
Accés obertThe non-isothermal crystallization of the biodegradable poly(4-hydroxybutyrate) (P4HB) has been studied by means of differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). In the first case, Avrami, ... -
Numerical modelling of the cooling system at alba synchrotron radiation facility to understand its performance
(American Society of Mechanical Engineers (ASME), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialThe ALBA Synchrotron Light Source in Barcelona (Spain) requires a reliable, stable and adequate cooling system for its optimal operation. The current design with four long and intricate consumption lines with a ring type ... -
Optimal Sample Preparation for the Analysis of Micrometric Heterogeneous Samples
(2015-05-29)
Article
Accés obertPrecise microanalytical techniques are essential in many fields such as cultural heritage materials, showing complex layered microstructures containing a wide range of materials of diverse nature and hardness. Noninvasive ... -
Performance of high-temperature superconducting REBCO coated conductors under synchrotron irradiation for future circular colliders
(Institute of Physics (IOP), 2023-10-01)
Article
Accés obertThe influence of medium-to-high energy synchrotron radiation (SR) (˜10–100 keV) produced by the ALBA Synchrotron Light Source on state-of-the-art REBCO coated conductors (CCs) has been studied to assess the feasibility of ... -
Polyamorphic transitions in Ce-based metallic glasses by synchrotron radiation
(2011-12-01)
Article
Accés obertWe report here on a polyamorphic-phase transition upon application of pressure on a Ce-based metallic glass, Ce70Al10Ni10Cu10, investigated by x-ray diffraction and inelastic x-ray scattering. This alloy is found to display ... -
Preparation of nanocomposites of poly(epsilon-caprolactone) and multi-walled carbon nanotubes by ultrasound micro-molding. Influence of nanotubes on melting and crystallization
(2017-08-01)
Article
Accés obertUltrasound micro-molding technology was successfully applied to prepare nanocomposites based on a poly(e-caprolactone) (PCL) matrix and multi-walled carbon nanotubes (MWCNTs). Optimization of processing parameters (i.e. ... -
Structure, mechanical properties and nanocrystallization of (FeCoCrNi)-(B,Si) high-entropy metallic glasses
(2022-02)
Article
Accés obertNew high-entropy metallic glasses were produced by adding B and Si to the Fe25Co25Cr25Ni25 high entropy alloy. Extremely hard materials were obtained by inducing structural relaxation and nanocrystallization in the ... -
Synchrotron radiation studies on even-odd and odd-even nylons
(IOP PUBLISHING LTD., 2009-09-08)
Article
Accés obertAliphatic polyamides derived from odd diamine or odd dicarboxylic acid units cannot adopt a conventional sheet structure when molecular chains have an all trans conformation. However, typical fiber diffraction patterns of ... -
Thermally induced structural transitions of nylon 4 9 as a new example of even-odd polyamides
(2018-02-16)
Article
Accés obertCrystalline morphology and structure of nylon 4 9 have been studied by means of optical and transmission electron microscopies, and X-ray diffraction. Rhombic crystals were characteristic of crystallization from glycerin ...