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Shen, Q. (author), Batashev, I. (author), Zhang, F. (author), Ojiyed, Hamutu (author), Dugulan, A.I. (author), van Dijk, N.H. (author), Brück, E.H. (author)The transition-metal based Laves phase materials represent an extended family of alloys with rich and fascinating physical properties. In this work, we have investigated the negative thermal expansion and magnetocaloric effect in arc-melted and melt-spun Fe<sub>2</sub>Hf<sub>1-</sub><sub>x</sub>Ti<sub>x</sub> (x = 0.15, 0.27, 0.30, 0.33, 0.36...journal article 2023
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Ioannidou, C. (author)The focus of the present work is on the micro-alloying element vanadium, which is well known for providing precipitation strengthening to steels and which has, therefore, attracted a lot of interest the last decades. Vanadium carbide precipitation can take place in the migrating austenite/ferrite interface during the austenite-to-ferrite phase...doctoral thesis 2022
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Miao, Xuefei (author), Gong, Yong (author), Zhang, F. (author), You, Yurong (author), Caron, Luana (author), Qian, Fengjiao (author), Xu, Feng (author), van Dijk, N.H. (author), Brück, E.H. (author)Magnetocaloric materials undergoing reversible phase transitions are highly desirable for magnetic refrigeration applications. (Mn,Fe)<sub>2</sub>(P,Si) alloys exhibit a giant magnetocaloric effect accompanied by a magnetoelastic transition, while the noticeable irreversibility causes drastic degradation of the magnetocaloric properties...journal article 2022
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Rangel Cardenas, A.L. (author)In this thesis several aspects of PEM fuel cells are discussed. From an atomic scale, e.g. crystal and electronic structure of a non-noble metal material, e.g. (H)zLiMn2O4 (protonated spinel lithium manganese oxide) for electrocatalysis and its dynamics, to meso-macro scale effects such as those concerning transport resistances at the membrane...doctoral thesis 2021
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Ioannidou, C. (author), Navarro Lopez, A. (author), Dalgliesh, Robert M. (author), Rijkenberg, Arjan (author), Geerlofs, N. (author), Pappas, C. (author), Sietsma, J. (author), van Well, A.A. (author), Offerman, S.E. (author)In-situ Neutron Diffraction and Small-Angle Neutron Scattering (SANS) are employed for the first time simultaneously in order to reveal the interaction between the austenite to ferrite phase transformation and the precipitation kinetics during isothermal annealing at 650 and at 700 °C in three steels with different vanadium (V) and carbon (C)...journal article 2021
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Lai, J. (author), You, X. (author), Dugulan, A.I. (author), Huang, B. (author), Liu, J. (author), Maschek, M. (author), van Eijck, L. (author), van Dijk, N.H. (author), Brück, E.H. (author)The first-order magneto-elastic transition in the Mn–Fe–P–Si alloys can be tailored by vanadium substitution. Alloys with a suitable V substitution provide an excellent magnetocaloric effect with minor hysteresis in low magnetic fields up to 1.2 T. Mössbauer measurements show that the hyperfine field is reduced by V substitution. Neutron...journal article 2020
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Smith, A.L. (author), Kauric, G.P.T.F. (author), van Eijck, L. (author), Goubitz, K. (author), Clavier, N. (author), Wallez, G. (author), Konings, R. (author)Neutron diffraction measurements of the double molybdate Cs<sub>3</sub>Na(MoO<sub>4</sub>)<sub>2</sub> have been performed for the first time in this work and the crystal structure refined using the Rietveld method. The thermal expansion of this trigonal phase, in space group P3¯m1, measured using high temperature X-ray diffraction (XRD),...journal article 2019
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Lai, J. (author), Huang, B. (author), Miao, X.F. (author), Nguyên, V.T. (author), You, X. (author), Maschek, M. (author), van Eijck, L. (author), Zeng, D. (author), van Dijk, N.H. (author), Brück, E.H. (author)Approaching the border of the first order transition and second order transition is significant to optimize the giant magnetocaloric materials performance. The influence of vanadium substitution in the Mn<sub>1.2-x</sub>V<sub>x</sub>Fe<sub>0.75</sub>P<sub>0.5</sub>Si<sub>0.5</sub> alloys is investigated for annealing temperatures of 1323,...journal article 2019
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Bruinen, Paul (author)The battolyser concept is based on an old fashioned nickel iron battery, consisting of a positive nickel(oxy) hydroxide electrode and negative iron (hydroxide) electrode. Research has been performed on the structural changes of the nickel and iron electrode upon charge and discharge. A lot of research can be found for the nickel electrode, but...master thesis 2018
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- Juhas, Pavol (author), Louwen, Jaap N. (author), van Eijck, L. (author), Vogt, Eelco T.C. (author), Billinge, Simon J.L. (author) journal article 2018
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Smith, A.L. (author), Verleg, M.N. (author), Vlieland, J. (author), de Haas, D.W. (author), Ocadiz flores, J.A. (author), Martin, Philippe (author), Rothe, Jörg (author), Capelli, E. (author), van Eijck, L. (author)The development at the Delft University of Technology (TU Delft, The Netherlands) of an experimental set-up dedicated to high-temperature in situ EXAFS measurements of radioactive, air-sensitive and corrosive fluoride salts is reported. A detailed description of the sample containment cell, of the furnace design, and of the measurement...journal article 2018
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Miao, X.F. (author)Mn-Fe-P-Si compounds are, to date, the most promising materials for refrigeration and energy conversion applications due to the combination of giant magnetocaloric effect (GMCE) and low material cost. The nature of magneto-elastic transition was studied on both length- and time-scales using neutron diffraction, muSR and Mӧssbauer spectroscopy...doctoral thesis 2016
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- Zhou, Z. (author) doctoral thesis 2016
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Miao, X.F. (author), Caron, L. (author), Gercsi, Z. (author), Daoud-Aladine, A. (author), Van Dijk, N.H. (author), Brück, E. (author)The thermal-history dependence of the magnetoelastic transition in (Mn,Fe)2(P,Si) compounds has been investigated using high-resolution neutron diffraction. As-prepared samples display a large difference in paramagnetic-ferromagnetic (PM-FM) transition temperature compared to cycled samples. The initial metastable state transforms into a lower...journal article 2015
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Ohms, C. (author)Welding is applied in many industrial sectors to join components, and has become an important manufacturing process because it enables the fabrication of structures that could not otherwise be constructed. Weld regions have inhomogeneous microstructures and are more susceptible to crack initiation and crack propagation than the surrounding base...doctoral thesis 2013
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Strobl, M. (author), Tremsin, A.S. (author), Hilger, A. (author), Wieder, F. (author), Kardjilov, N. (author), Manke, I. (author), Bouwman, W.G. (author), Plomp, J. (author)We report on measurements of spatial beam modulation of a polarized neutron beam induced by triangular precession regions in time-of-flight mode and the application of this novel technique spin-echo modulated small-angle neutron scattering (SEMSANS) to small-angle neutron scattering in the very small angle range. It is shown that this method can...journal article 2012
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Ashkar, R. (author), Schaich, W.L. (author), De Haan, V.O. (author), Van Well, A.A. (author), Dalgliesh, R. (author), Plomp, J. (author), Pynn, R. (author)Neutron spin-echo resolved grazing incidence scattering (SERGIS) measurements performed on a silicon diffraction grating with a rectangular profile were shown in our previous publications to be well explained by dynamical theory calculations. The theory is based on a Bloch wave expansion of the neutron wavefunction in the periodic layer of the...journal article 2011
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Postma, H. (author), Amkreutz, L. (author), Borella, A. (author), Clarijs, M. (author), Kamermans, H. (author), Kockelmann, W. (author), Paradowska, A. (author), Schillebeeckx, P. (author), Visser, D. (author)Two neutron based techniques, neutron resonance capture analysis (NRCA) and time-of-flight neutron-diffraction (TOF-ND) have been used to determine the elemental composition and structure of a precious and very well preserved all-metal sword from the Bronze Age. This Buggenum sword was on loan from the National Museum of Antiquities (NMA) in...journal article 2009
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- Borghols, W.J.H. (author), Wagemaker, M. (author), Lafont, U. (author), Kelder, E.M. (author), Mulder, F.M. (author) journal article 2009
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Singh, S. (author)The global energy issues can be solved by the abundantly available hydrogen on earth. Light metals are a compact and safe medium for storing hydrogen. This makes them attractive for vehicular use. Unfortunately, hydrogen uptake and release is slow in light metals at practical temperature and pressure conditions. Catalysts are known to accelerate...doctoral thesis 2009
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