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Dissertations / Theses on the topic 'MAX phase'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 January 2023

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1

Rybka, Marcin. "Optical properties of MAX-phase materials." Thesis, Linköping University, Applied Optics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-60008.

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<p> </p><p><p> </p></p><p><p><p> </p></p></p><p>MAX-phase materials are a new type of material class. These materials are potentiallyt echnologically important as they show unique physical properties due to the combination of metals and ceramics. In this project, spectroscopic ellipsometry in the spectral range of 0.06 eV –6.0 eV was used to probe the linear optical response of MAX-phases in terms of the complexd dielectric function <em>ε(ω) = ε1(ω) + iε2(ω<em>). </em></em>Measured data were fit to theoretical models using the Lorentz and generalized oscillator models. Data from seven differen

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2

Ward, Joseph. "MAX phase ceramics for nuclear applications." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/max-phase-ceramics-for-nuclear-applications(b6b22354-f430-4e78-824e-3e34afd83273).html.

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The PhD research presented here is part of the new nuclear manufacturing (NNUMAN) research group, looking into novel materials and manufacturing processes. NNUMAN is an EPSRC funded (EP/J021172/1) program with direct support from Rolls Royce plc. The fabrication of MAX phase coatings by different means and assessing their tribological properties was the original theme of this thesis. However, due to issues with fabrication processes the overriding direction was moved towards assessing the response of bulk MAX phases to irradiating and corrosive environments. It is believed that this research w

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3

Mockutė, Aurelija. "Synthesis and Characterization of New MAX Phase Alloys." Doctoral thesis, Linköpings universitet, Tunnfilmsfysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-104829.

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This Thesis explores synthesis and characterization of new MAX phase alloys (M = early transition metal, A = A-group element, and X = C or N), based on incorporation of M and X elements previously not considered. My primary focus is on M = Mn for attaining magnetic properties, and on X = O for potential tuning of the transport properties. A recent theoretical study predicted (Cr1-xMnx)2AlC MAX phase to be a stable magnetic nanolaminate. I aimed at realizing this material and through a combinatorial approach based on magnetron sputtering from elemental targets, the first experimental evidence o

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4

Zhang, Shiqi. "Etude de la Réactivité chimique des monocristaux de phase MAX." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAI042/document.

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Les phases MAX forment une famille de carbures et de nitrures nano-lamellaires de formule chimique Mn+1AXn, où M est un métal de transition des premières colonnes, A appartient aux colonnes 13-16 et X est soit C, soit N, ou une combinaison des deux éléments. Ces phases combinent les mérites des céramiques et des métaux, comme une bonne stabilité chimique, l’usinabilité, la résistance aux chocs mécaniques, de bonnes conductivités thermique et électrique, etc. Malgré tout, l’étude de leurs propriétés intrinsèques et de leurs anisotropies a été jusqu’à présent limitée par l’indisponibilité de mon

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5

Liu, Zhongsheng. "Magnetic MAX phases: Itinerant electron magnetism of pure and Mn-doped Cr-based MAX phases." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199312.

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6

Palmquist, Jens-Petter. "Carbide and MAX-Phase Engineering by Thin Film Synthesis." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3972.

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7

Thore, Andreas. "A theoretical investigation of Tin+1AlCn and Mn2GaC MAX phases : phase stability and materials properties." Licentiate thesis, Linköpings universitet, Tunnfilmsfysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111955.

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This thesis presents theoretical research on MAX phases (M=transition metal, A=A-group element, X=carbon and/or nitrogen), with focus on predictions of phase stability as well as of physical properties. The first part is an investigation of the phase stability of the MAX phases Ti2AlC, Ti3AlC2, and Ti4AlC3 at elevated temperatures, where the former two phases have been obtained experimentally. Phase stability calculations of MAX phases usually do not take temperature dependent effects such as electronic excitations and lattice vibrations into consideration due to significantly increased comput

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8

Petruhins, Andrejs. "Synthesis and characterization of Ga-containing MAX phase thin films." Licentiate thesis, Linköpings universitet, Tunnfilmsfysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-110764.

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The study of magnetic Mn+1AXn (MAX) phases (n = 1 − 3, M – a transition metal, A – an A group element, X – C or N) is a recently established research area, fuelled by theoretical predictions and first confirmed experimentally through alloying of Mn into the well-known Cr2AlC and Cr2GeC. Theoretical phase stability investigations suggested a new magnetic MAX phase, Mn2GaC, containing Ga which is liquid close to room temperature. Hence, alternative routes for MAX phase synthesis were needed, motivating a further development of magnetron sputtering from liquid targets. In this thesis, (Cr1-xMnx)2

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9

Mockutė, Aurelija. "Thin Film Synthesis and Characterization of New MAX Phase Alloys." Licentiate thesis, Linköpings universitet, Tunnfilmsfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-77775.

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The objective of this Thesis is synthesis and characterization of new MAX phase alloys (M = early transition metal, A = A-group element, and X = C or N) based on incorporation of M and X elements previously not used in any known MAX phases. This is motivated by a search for optimized and unique materials properties, such as different magnetic states. Two synthesis routes have been used to attain Ti2AlC1-xOx: deposition of Ti2AlCy under high vacuum conditions with residual gas acting as O source, and solid-state reactions following deposition of understoichiometric TiCy on Al2O3. Detailed local

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10

Ougier, Michaël. "Etude de l’élaboration de revêtements autocicatrisants pour le développement de matériaux robustes en condition nucléaire." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLE028/document.

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Dans le cadre des recherches menées sur l'amélioration de la résistance à l'oxydation des gaines de combustible en conditions accidentelles, des revêtements Cr-Al-C et Cr2AlC ont été développés dans ce travail. Dans la première partie, nous avons étudié le procédé HiPIMS afin de comprendre l'effet de différents paramètres de dépôt sur le plasma et les propriétés des films obtenus. Il en ressort que malgré un bombardement ionique plus intense, un apport supplémentaire d'énergie est requis pour obtenir un revêtement cristallin. Des recuits à partir de 500°C sous argon de systèmes Cr-Al-C tels qu

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11

Abdulkadhim, Ahmed Mohammed Hasan [Verfasser]. "On the stability of MAX phase thin films / Ahmed Mohammed Hasan Abdulkadhim." Aachen : Shaker, 2011. http://d-nb.info/1074088581/34.

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12

Thomas, Tony. "Fabrication techniques to produce micro and macro porous MAX-phase Ti2AlC ceramic." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.669028.

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MAX-phase ceramics are a class of ductile ceramic material group with the general molecular formula Mn+1AXn (n = 1, 2, 3….), where M is an early transition element, A is an element from the ‘A’ group of the periodic table and X is either nitride or carbide. One advantage of these materials is that they maintain their strength at high temperatures. In addition these ceramic materials possess the best properties of both ceramics and metals. Some of their important characteristics are low density, high stiffness, machinability, excellent thermal and electrical conductivity and they even exhibit s

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13

刘, 钟升. "磁性MAX相：Cr系MAX相およびそのMn置換系の遍歴電子磁性". Kyoto University, 2015. http://hdl.handle.net/2433/199519.

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14

Pei, Ruizhi. "Self-healing behaviour of MAX phase ceramics studied by computed X-ray tomography." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/selfhealing-behaviour-of-max-phase-ceramics-studied-by-computed-xray-tomography(6950ce07-616b-4c0a-8ded-77d811735791).html.

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MAX phase ceramics are promising candidates as high temperature materials. The self-healing capabilities of these materials may further improve their reliability and reduce maintenance costs during service. However, previous two dimensional research on their healing behaviour is either inadequate or sometimes even biased, because crack healing is essentially a three dimensional process. In this study, the self-healing behaviour of two MAX phase ceramics: Ti2AlC and Cr2AlC were investigated in three dimensions using high resolution synchrotron and laboratory X-ray tomography. The Ti2AlC showed

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15

Kahnt, Max [Verfasser]. "Numerical approximation of non-isothermal multi-component, multi-phase field systems / Max Kahnt." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/1240674694/34.

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16

Drouelle, Elodie. "Relations microstructure, propriétés mécaniques et résistance à l'oxydation de la phase MAX Ti3AlC2." Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT2277/document.

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L'allègement des structures est devenu un enjeu majeur pour les industries du transport. Afin de répondre à cette demande, une stratégie de recherche d'élaboration de nouveaux matériaux, présentant des propriétés spécifiques égalant a minima les propriétés des matériaux en service, a été mise en place. C'est dans ce contexte général que s'inscrivent ces travaux sur la phase MAX Ti3AlC2. La tenue à l'oxydation et les propriétés en traction et en fluage traction à haute température (800-1000°C) ont été évaluées pour des échantillons élaborés au cours de cette étude par métallurgie des poudres (f

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17

Sylvain, Wilgens. "Étude de la plasticité du monocristal de phase MAX par déformation aux petites échelles." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2307/document.

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L'objectif de cette thèse est l'étude de la déformation, à l'échelle microscopique, de la phase MAX Ti2AlN, synthétisée par métallurgie des poudres. Ce travail se divise en trois parties : une première dans laquelle l'accent a été mis sur l'hystérèse mécanique des phases MAX via des essais cyclés, en nanoindentation sphérique et compression ex-situ de micro-piliers, sur des grains d'orientations différentes déterminées par l'EBSD. Dans la deuxième nous nous sommes intéressés à la déformation de micropiliers via des essais de compression cyclés in-situ couplés à la micro-diffraction Laue. L'obj

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Abi, Tannous Tony. "Croissance de la phase MAX sur SiC contact ohmique stable et fiable à haute température." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0141.

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Nous avons pour objectif de jeter les bases d’une technologie en totale rupture avec celles existantes pour la fabrication d’une nouvelle génération de composants électroniques à base du Carbure de Silicium pour les applications à très hautes températures (jusqu’à 600°C). Cette nouvelle technologie est basée sur l'emploi d'une nouvelle génération de matériaux pour les contacts ohmiques haute température. Nous avons ciblé la phase Ti3SiC2, qui est une phase céramique/métallique, pour former un bon contact ohmique stable et fiable à haute et très haute température. A savoir que l’aspect céramiqu

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19

Rech, S., A. Surpi, S. Vezzu, et al. "Cold-spray deposition of Ti2AlC coatings." Linköpings universitet, Tunnfilmsfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-92686.

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Ti2AlC coatings have been fabricated by cold-spray deposition. The microstructure evolution as a function of basic spray parameters temperature and pressure onto AA6060 aluminium alloy and 1.0037 steel substrates has been studied. Adherent and dense 50–80 μm thick Ti2AlC coatings were deposited on soft AA6060 substrates under gas temperature and pressure of 600 °C and 3.4 MPa, respectively, whilst comparable results were obtained on harder 1.0037 steel by using higher temperature (800 °C) and pressure (3.9 MPa).

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Magné, Damien. "Synthèse et structure électronique de phases MAX et MXènes." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2284/document.

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Les objectifs de ce travail sont d'une part d'étudier la structure électronique de carbures de titane bidimensionnels appartenant à la famille des MXènes, et d'autre part de synthétiser des films minces pour caractériser certaines de leurs propriétés. L'étude de la structure électronique a été réalisée sur le système Ti3C2T2 avec une attention particulière portée aux groupements de surface T (T=OH, F ou O) en comparant les résultats obtenus par spectroscopie de perte d'énergie des électrons à ceux des calculs ab initio. Cette étude, portée à la fois sur les excitations du gaz d'électrons de va

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21

Souchet, Alexandra. "Comportement tribologique d'une phase MAXW : transition et effets d'échelle sur différents Ti₃SiC₂." Ecully, Ecole centrale de Lyon, 2004. http://bibli.ec-lyon.fr/exl-doc/asouchet.pdf.

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La présente étude s'intéresse au comportement en frottement sec d'une phase MAX particulière, le Ti₃SiC₂. Il est montré ici, à l'aide d'expériences sur tribomètres pion-plan alternatifs, que le comportement du Ti₃SiC₂ contre différents antagonistes se caractérise par deux régimes de frottement. Un régime de frottement et usure faibles, "de type I", précède un régime de frottement élevé et d'usure importante, "de type II". Les deux régimes sont séparés par une transition dont les conditions d'apparition sont étudiées ici. Lors du régime de type I, un film de transfert adhérent se forme sur l'an

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22

Emmerlich, Jens. "MAX phase thin films : unique multifunctional ceramics with the elements Ti, Si, Ge, Sn, and C /." Linköping : Department of Physics, Chemistry, and Biology, Linköping University, 2006. http://www.bibl.liu.se/liupubl/disp/disp2006/tek1024s.pdf.

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23

Novoselova, Iuliia Pavlovna [Verfasser], and Michael [Akademischer Betreuer] Farle. "Magnetism of atomically laminated MAX phase Mn2GaC and (Cr0.5Mn0.5)2GaC films / Iuliia Novoselova ; Betreuer: Michael Farle." Duisburg, 2020. http://d-nb.info/121503220X/34.

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Pang, Wei Kong. "Thermal and phase stability of nano-layered ceramics – M[subscript]n[subscript]+[subscript]1AX[subscript]n phases." Thesis, Curtin University, 2010. http://hdl.handle.net/20.500.11937/1168.

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M[subscript]n[subscript]+[subscript]1AX[subscript]n (M: early transition metal, A: group-A element, X: carbon or nitrogen, n: an integer between 1-3) phases are a group of newly developed materials with the advantages of both metals and ceramics, resulting in low density, low hardness, good machinability, high strength and high Young’s modulus at high temperature, high chemical resistance, excellent thermal shock resistance, as well as thermal and electrical conductivity. This salient combination of properties makes these materials potential candidates in diverse field of applications, especia

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Frodelius, Jenny. "Characterization of Ti₂AlC coatings deposited with High Velocity Oxy-Fuel and Magnetron Sputtering Techniques." Licentiate thesis, Linköping University, Linköping University, Thin Film Physics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11422.

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<p>This Thesis presents two different deposition techniques for the synthesis of Ti<sub>2</sub>AlC coatings. First, I have fabricated Ti<sub>2</sub>AlC coatings by high velocity oxy-fuel (HVOF) spraying. Analysis with scanning electron microscopy (SEM) show dense coatings with thicknesses of ~150 µm when spraying with a MAXTHAL 211<sup>TM </sup>Ti<sub>2</sub>AlC powder of size ~38 µm in an H<sub>2</sub>/O<sub>2</sub> gas flow. The films showed good adhesion to stainless steel substrates as determined by bending tests and the hardness was 3-5 GPa. X-ray diffraction (XRD) detected minority phase

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Frodelius, Jenny. "Characterization of Ti2AlC coatings deposited with High Velocity Oxy-Fuel and Magnetron Sputtering Techniques." Licentiate thesis, Linköpings universitet, Tunnfilmsfysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11422.

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This Thesis presents two different deposition techniques for the synthesis of Ti2AlC coatings. First, I have fabricated Ti2AlC coatings by high velocity oxy-fuel (HVOF) spraying. Analysis with scanning electron microscopy (SEM) show dense coatings with thicknesses of ~150 µm when spraying with a MAXTHAL 211TM Ti2AlC powder of size ~38 µm in an H2/O2 gas flow. The films showed good adhesion to stainless steel substrates as determined by bending tests and the hardness was 3-5 GPa. X-ray diffraction (XRD) detected minority phases of Ti3AlC2, TiC, and AlxTiy alloys. The use of a larger powder size

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Schroeter, Olaf Verfasser], and Christoph [Akademischer Betreuer] [Leyens. "Herstellung und Charakterisierung von PVD-Schichten auf Basis der Cr2AlC-MAX-Phase / Olaf Schroeter. Betreuer: Christoph Leyens." Cottbus : Universitätsbibliothek der BTU Cottbus, 2011. http://d-nb.info/1015959989/34.

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Wegener, Tobias [Verfasser], Max Ernst [Akademischer Betreuer] Scheulen, and Markus [Akademischer Betreuer] Kaiser. "Untersuchung des Metabolismus und der Pharmakokinetik des neuen Triazens TriN2755 in einer klinischen Phase-I-Studie / Tobias Wegener. Gutachter: Max Ernst Scheulen ; Markus Kaiser. Betreuer: Max Ernst Scheulen." Duisburg, 2015. http://d-nb.info/1070762768/34.

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Guitton, Antoine. "Mécanismes de déformation des phases MAX : une approche expérimentale multi-échelle." Thesis, Poitiers, 2013. http://www.theses.fr/2013POIT2280/document.

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Il est couramment admis que la déformation plastique des phases MAX est dueau glissement de dislocations dans les plans de base s'organisant en empilements et murs. Cesderniers peuvent former des zones de désorientation locale appelées kink bands. Cependant, lesmécanismes élémentaires et le rôle exact des défauts microstructuraux sont encore mal connus. Cemanuscrit présente une étude expérimentale multi-échelle des mécanismes de déformation de laphase MAX Ti2AlN. A l'échelle macroscopique, deux types d'expériences ont été menés. Des essaisde compression in-situ à température et pression ambian

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Schori, Arnold. "Contribution à l'amélioration génétique du soja [Glycine max (L.) Merr.] pour la tolérance au froid en phase reproductive /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10729.

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Walter, Claudia. "Simulation of diffusion processes in turbine blades and large area deposition of MAX phase thin films with PVD /." Aachen : Shaker, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014643782&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Rampai, Tokoloho. "Synthesis of Ti₂AlC, Ti₃AlC₂ and Ti₃SiC₂ MAX phase ceramics; and their composites with c-BN." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/18463.

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MAX phase ceramics are ternary ceramics with both metallic and ceramic properties. The existing backing materials in grinding wheels can be made of ceramics or metals. In these applications, ceramics have the disadvantage of low toughness, and most metals have the disadvantages of relatively high density and intolerance to some very high temperatures. The MAX phases have a combination of the main advantages of both metals and ceramics: they are soft and machinable yet also heat-tolerant, strong and lightweight. Cubic boron nitride (c-BN) is a widely used abrasive in grinding wheels, which is e

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Cha, Limei [Verfasser]. "A metastable HCP intermetallic phase in Cu-Al bilayer films / Max-Planck-Institut für Metallforschung, Stuttgart. Vorgelegt von Limei Cha." Stuttgart : Max-Planck-Inst. für Metallforschung, 2006. http://d-nb.info/981078958/34.

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Walter, Claudia [Verfasser]. "Simulation of Diffusion Processes in Turbine Blades and Large Area Deposition of MAX Phase Thin Films with PVD / Claudia Walter." Aachen : Shaker, 2005. http://d-nb.info/1186578092/34.

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Bugnet, Matthieu. "Synthèse, structure électronique et comportement sous irradiation aux ions de films minces de phases MAX." Poitiers, 2011. http://theses.univ-poitiers.fr/23902/2011-Bugnet-Matthieu-These.pdf.

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L'objectif de ce travail est de réaliser la synthèse de matériaux modèles (films minces épitaxiés) de céramiques ternaires, les phases MAX, afin d'étudier leur comportement sous irradiation aux ions. Les modifications micro-structurales induites par l'irradiation ont été suivies à l'aide des spectroscopies de perte d'énergie des électrons et d'absorption X en complément de la diffraction des rayons X et de la microscopie électronique en transmission. La croissance de films minces épitaxiés de Cr2AlC et de Cr2GeC a été obtenue par pulvérisation magnétron tandis que la synthèse de couches textur

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Rauch, Max Philip [Verfasser], Lutz [Akademischer Betreuer] Feld, and Thomas [Akademischer Betreuer] Hebbeker. "Thermal measurements and characterizations for the CMS phase-1 barrel pixel detector and the CMS phase-2 upgrade tracker 2S module with evaporative CO2 cooling systems / Max Philip Rauch ; Lutz Feld, Thomas Hebbeker." Aachen : Universitätsbibliothek der RWTH Aachen, 2020. http://d-nb.info/1217257063/34.

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Li, Sa. "Materials Design from ab initio Calculations." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4274.

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Guo, Yang [Verfasser], and Max [Akademischer Betreuer] Schnurr. "Overexpression of Heat-Shock Protein 27 (HSP27) increases gemcitabine sensitivity in pancreatic cancer cells through s-phase arrest and apoptosis / Yang Guo. Betreuer: Max Schnurr." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/1062877586/34.

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Wilhelmsson, Ola. "Synthesis and Characterization of Ternary Carbide Thin Films." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8265.

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Pinto, Diego de Oliveira 1987. "Aplicabilidade do método 1623 e do método de filtração em membranas para detecção de cistos de Giardia spp. e oocistos de Cryptosporidium spp. em amostras hídricas considerando diferentes faixas de turbidez, e estudo da etapa de purificação por separação imunomagnética : Applicability of method 1623 and membrane filtration method for detection of Giardia spp. cysts and Cryptosporidium spp. oocysts in water samples considering different levels of turbidity, and study of immunomagnetic separation phase." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315680.

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Orientador: Romeu Cantusio Neto<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-09-28T14:16:54Z (GMT). No. of bitstreams: 1 Pinto_DiegodeOliveira_M.pdf: 2983083 bytes, checksum: 203eb1379711790b56fd1c53f7740c0c (MD5) Previous issue date: 2013<br>Resumo: Os protozoários patogênicos Giardia spp. e Cryptosporidium spp. estão entre os principais contaminantes associados à veiculação hídrica e seu monitoramento em águas de abastecimento público é determinado pela Portaria n. 2.914/2011, do Ministério da Saúde do Brasil. Este

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Henke, Magdalena [Verfasser], and Max Ernst [Akademischer Betreuer] Scheulen. "Klinisch-pharmakologische Untersuchungen im Rahmen einer klinischen Phase I-Studie mit trans-Natrium-tetrachlorobis(indazol)Ruthenat(III)/Indazolhydrochlorid (FFC14A) bei Patienten mit soliden Tumoren / Magdalena Henke. Betreuer: Max Ernst Scheulen." Duisburg, 2016. http://d-nb.info/1104128810/34.

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Humphrey, Caroline. "Deformation in MAX phases." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610553.

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Ramzan, Muhammad. "Structural, Electronic and Mechanical Properties of Advanced Functional Materials." Doctoral thesis, Uppsala universitet, Materialteori, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-205243.

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The search for alternate and renewable energy resources as well as the efficient use of energy and development of such systems that can help to save the energy consumption is needed because of exponential growth in world population, limited conventional fossil fuel resources, and to meet the increasing demand of clean and environment friendly substitutes. Hydrogen being the simplest, most abundant and clean energy carrier has the potential to fulfill some of these requirements provided the development of efficient, safe and durable systems for its production, storage and usage. Chemical hydrid

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Drevin-Bazin, Alexia. "Module de puissance à base SiC fonctionnant à haute température." Thesis, Poitiers, 2013. http://www.theses.fr/2013POIT2251/document.

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Le développement de dispositif de puissance haute température est un véritable challenge pour la recherche fondamentale et industrielle. La chaleur, provenant de l'échauffement des composants ou des conditions environnementales, représente l'une des contraintes majeures auquel est confronté un module de puissance. Le sujet de l’étude menée dans le cadre de cette thèse, financée par la société HCM (Groupe SERMA) vise à élaborer un module de puissance complet et fiable à haute température. La première partie de l’étude concerne la réalisation d’attaches de puces par différentes techniques : bras

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Gupta, Surojit Barsoum M. W. "Tribology of MAX phases and their composites /." Philadelphia, Pa. : Drexel University, 2006. http://dspace.library.drexel.edu/handle/1860%20/875.

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Souchet, Alexandra Loubet Jean-Luc. "Comportement tribologique d'une phase MAXW." Ecully : Ecole centrale de Lyon, 2004. http://bibli.ec-lyon.fr/ext-doc/asouchet.pdf.

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Hoffman, Elizabeth N. Barsoum M. W. "Carbide derived carbon from MAX-phases and their separation applications /." Philadelphia, Pa. : Drexel University, 2006. http://hdl.handle.net/1860/1120.

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Shi, Lu. "Des phases MAX au MXenes : synthèse,caractérisation et propriétés électroniques." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI101/document.

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Les phases MAX sont des carbures ou des nitrures ternaires nano-lamellaires comportant un métal de transition (M), un élément des colonnes 13-16 (A), X=C ou N.Ces phases combinent certaines des meilleures propriétés des céramiques à celles des métaux. Leurs propriétés physiques (rigidité, résistance aux chocs mécaniques et thermiques, bonnes conductivités thermique et électrique), associées à la possibilité d’usinage, les rend très attractives en termes d’applications technologiques potentielles.En 2011, il a été établi qu’un traitement à l’acide fluorhydrique (HF) des phases MAX comprenant de

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Gertzen, Jonathan. "MAX phases as an electrocatalyst support material: a DFT study." Master's thesis, Faculty of Engineering and the Built Environment, 2019. http://hdl.handle.net/11427/31459.

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The insatiable global demand for energy cannot be sustained by fossil fuels without irreparable damage to the environment. Various alternative energy sources are being investigated to provide renewable clean energy. One promising technology is the hydrogen fuel cell, which uses hydrogen and oxygen to produce electricity. However, the currently used catalyst support material, carbon black, corrodes in the low pH and oxidative environment. Therefore, new catalyst support materials are being sought. A new class of material, called MAX phases, shows potential because some possess a combination of

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Lu, Chengjie. "Mécanisme de brasage de la céramique Ti2AIC utilisant un alliage d'apport à base de nickel." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS053/document.

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Dans cette étude la céramique Ti2AlC a pu être brasée avec succès sur un substrat de Ni dans une gamme de température allant de 1000°C à 1100°C et pour des temps de maintien de 10 à 60 mn. Les mécanismes mis en œuvre pendant la brasure ont été mis en lumière en étudiant la microstructure du joint Ti2AlC/Ni. On montre ainsi que le nickel provenant du métal d’apport BNi-2 diffuse dans Ti2AlC, majoritairement le long des joints de grains et parfois aussi dans certains grains d’orientation favorable. Le phénomène d’interaction induit des variations de fluidité du métal d’apport liquide. En conséqu

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