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Liu, Y. (author), Mol, J.M.C. (author), Janssen, G.C.A.M. (author)The aluminium alloy 7075-T6 is widely used in engineering. In some applications, like slurry transport, corrosion and abrasion occur simultaneously, resulting in early material failure. In the present work, we investigated the combined effect of corrosion and wear on the aluminium alloy 7075-T6. We performed two series of wear experiments to...journal article 2016
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Denies, L. (author), Zandbergen, B.T.C. (author), Natale, P. (author), Ricci, D. (author), Invigorito, M. (author)Methane is a promising propellant for liquid rocket engines. As a regenerative coolant, it would be close to its critical point, complicating cooling analysis. This study encompasses the development and validation of a new, open-source computational fluid dynamics (CFD) method for analysis of methane cooling channels. Validation with...conference paper 2016
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Ogundiran, MB (author), Nugteren, H.W. (author), Witkamp, G.J. (author)Combined management of coal combustion fly ash and waste aluminium anodising etching solutions using geopolymerisation presents economic and environmental benefits. The possibility of using waste aluminium anodising etching solution (AES) as activator to produce fly ash geopolymers in place of the commonly used silicate solutions was explored...journal article 2016
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Liu, Y. (author), Visser, P. (author), Zhou, X. (author), Lyon, S.B. (author), Hashimoto, T. (author), Curioni, M. (author), Gholinia, A. (author), Thompson, G.E. (author), Smyth, G. (author), Gibbon, S.R. (author), Graham, D. (author), Mol, J.M.C. (author), Terryn, H.A. (author)An investigation into corrosion inhibition properties of a primer coating containing lithium carbonate as corrosion inhibitive pigment for AA2024 aluminum alloy was conducted. It was found that, during neutral salt spray exposure, a protective film of about 0.2 to 1.5 ?m thickness formed within the area where an artificial defect was introduced...journal article 2015
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Valdesueiro, D. (author)Particles are widely used in the chemical industry as raw material and end product. In many applications of particles, it is advantageous to give them a coating that can either protect the particle from outside influences or give it an additional function. Technologies to provide micron-sized particles with relatively thick coatings (in the...doctoral thesis 2015
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Den Besten, J.H. (author)Crew transfers, surveillance duties and {security, rescue, interception} operations at sea typically require high-speed craft. Aluminium is quite often selected as hull structure material because of its weight save potential in comparison to steel. The fatigue strength, however, may become a point of concern because of the decreased Young’s...doctoral thesis 2015
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Valdesueiro Gonzalez, D. (author), Meesters, G.M.H. (author), Kreutzer, M.T. (author), Van Ommen, J.R. (author)We have deposited aluminium oxide films by atomic layer deposition on titanium oxide nanoparticles in a fluidized bed reactor at 27 ± 3 °C and atmospheric pressure. Working at room temperature allows coating heat-sensitive materials, while working at atmospheric pressure would simplify the scale-up of this process. We performed 4, 7 and 15...journal article 2015
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Herfst, R. (author), Dekker, B. (author), Witvoet, G. (author), Crowcombe, W.E. (author), de Lange, D. (author), Sadeghian Marnani, H. (author)One of the major limitations in the speed of the atomic force microscope (AFM) is the bandwidth of the mechanical scanning stage, especially in the vertical (z) direction. According to the design principles of “light and stiff” and “static determinacy,” the bandwidth of the mechanical scanner is limited by the first eigenfrequency of the AFM...journal article 2015
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Malladi, S.R.K. (author)Transmission electron microscopy (TEM) has been well known as a powerful characterisation tool to understand the structure and composition of various materials down to the atomic level. Over the years, several TEM studies have been carried out to understand the compositional, structural and morphological changes a material undergoes as a...doctoral thesis 2014
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Norouzi Afshar, F. (author)Aluminium brazing sheet is a sandwich material made out of two aluminium alloys (AA4xxx/AA3xxx) and is widely used in automotive heat exchangers. One of the main performance criteria for heat exchanger units is the lifetime of the product. The lifetime of the heat exchanger units is determined by their corrosion resistance. The most common way...doctoral thesis 2013
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Hayton, D.J. (author), Khudchenko, A. (author), Pavelyev, D.G. (author), Hovenier, J.N. (author), Baryshev, A. (author), Gao, J.R. (author), Kao, T.Y. (author), Hu, Q. (author), Reno, J.L. (author), Vaks, V. (author)We report on the phase locking of a 3.4 THz third-order distributed feedback quantum cascade laser (QCL) using a room temperature GaAs/AlAs superlattice diode as both a frequency multiplier and an internal harmonic mixer. A signal-to-noise level of 60?dB is observed in the intermediate frequency signal between the 18th harmonic of a 190.7?GHz...journal article 2013
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Mahdavi Shahri, M. (author), Schut, H. (author), Van der Zwaag, S. (author), Alderliesten, R. (author)Abstract only.conference paper 2013
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Braakman, F.R. (author), Barthelemy, P. (author), Reichl, C. (author), Wegscheider, W. (author), Vandersypen, L.M.K. (author)We report both photon- and phonon-assisted tunneling transitions in a linear array of three quantum dots, which can only be understood by considering the full three-dimensionality of the charge stability diagram. Such tunneling transitions potentially contribute to leakage of qubits defined in this system. A detailed understanding of these...journal article 2013
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Cui, M. (author), Hovenier, J.N. (author), Ren, Y. (author), Vercruyssen, N. (author), Gao, J.R. (author), Kao, T.Y. (author), Hu, Q. (author), Reno, J.L. (author)We report on both measurements and simulations of the beam profile and wavefront of a single-mode, 3.5?THz quantum cascade wire laser, incorporating a lateral corrugated metal-metal waveguide, 3rd-order distributed feedback grating. The intrinsic wavefront was measured by using a Hartmann wavefront sensor (HWS) without any optical components...journal article 2013
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Demontis, V. (author), Sanna, C. (author), Melskens, J. (author), Santbergen, R. (author), Smets, A.H.M. (author), Damiano, A. (author), Zeman, M. (author)Thin oxide interlayers are commonly added to the back reflector of thin-film silicon solar cells to increase their current. To gain more insight in the enhancement mechanism, we tested different back reflector designs consisting of aluminium-doped zinc oxide (ZnO:Al) and/or hydrogenated silicon oxide (SiOx:H) interlayers with different metals ...journal article 2013
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- De Wit, F.M. (author) doctoral thesis 2012
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De Visser, P.J. (author), Baselmans, J.J.A. (author), Yates, S.J.C. (author), Diener, P. (author), Endo, A. (author), Klapwijk, T.M. (author)We have measured the number of quasiparticles and their lifetime in aluminium superconducting microwave resonators. The number of excess quasiparticles below 160?mK decreases from 72 to 17??m?3 with a 6?dB decrease of the microwave power. The quasiparticle lifetime increases accordingly from 1.4 to 3.5?ms. These properties of the superconductor...journal article 2012
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Wang, L. (author)In recent years, finite-element (FE) simulations have been extensively used in scientific research and industrial practice to analyse the extrusion process. A basic issue of FE simulations is the accuracy of the results, which is mainly determined by the viscoplastic material behaviour of aluminium alloys at elevated temperatures and the...doctoral thesis 2012
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Vercruyssen, N. (author), Barends, R. (author), Klapwijk, T.M. (author), Muhonen, J.T. (author), Meschke, M. (author), Pekola, J.P. (author)We demonstrate an increased quasiparticle recombination time in superconducting resonators on a SiNx membrane, compared to identical resonators on a SiNx/Si wafer. An interpretation is given using a thermal model of the membrane. Using an array of tunnel junctions to cool or heat the membrane, we show that the resonators on the membranes are...journal article 2011
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Westerwaal, R.J. (author), Nyqvist, R.G. (author), Haije, W.G. (author)For the daily use of hydrogen storage materials, not only their intrinsic storage properties are important, but also equally important is the performance under practical conditions. Besides the techniques already available for the fundamental characterization of storage materials, there is a growing need to test storage materials under...journal article 2011