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Academic literature on the topic 'Cathodes – Matériaux – Propriétés thermomécaniques'
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Dissertations / Theses on the topic "Cathodes – Matériaux – Propriétés thermomécaniques"
Bouzemmi, Wadii. "Caractérisation des matériaux carbonés des blocs cathodiques utilisés dans la cuve d'électrolyse Hall-Héroult." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/26933/26933.pdf.
Full textFaraoun, Houda Imane. "Modélisation des propriétés thermomécaniques des matériaux abradables." Besançon, 2005. http://www.theses.fr/2005BESA2008.
Full textAbradable seals are made for gas flux control in turbines and compressors. Good abradability implies reasonably low rigidity and sufficient hardness to resist to erosion, corrosion, oxidation, thermal choc and spontaneous combustion. Abradable materials consistent of a mixture of several structural elements: metallic matrix, solid lubricant phase and controlled amount of porosity. The development of composition and structure of abradables was until now mostly empirical using wear-maps, when theoretical studies resume to few schematic models established on experimental observations. In this thesis, we initiate a model that serves to structure improvement of abradables. It's a part of larger research activity within a European project aiming at developing enhanced abradables coatings by controlling the microstructure and its impact on mechanical properties. The first activity was to acquire more understanding on the relation between abradability and structure using morphological description of coatings. An image analysis approach was developed to quantify the geometrical parameters of structural elements. It is then used to get quantitative thermomechanical properties of some reference coatings by means of finite element analysis. A procedure for properties prediction for coatings before their spraying is proposed and the simulation tools necessary to its application created
Carbonneau, Xavier. "Etude des propriétés thermomécaniques de mullite zircone et de zircon." Lyon, INSA, 1997. http://theses.insa-lyon.fr/publication/1997ISAL0105/these.pdf.
Full textThe high temperature mechanical properties of mullite zirconia obtained by reaction sintering, and zircon have been studied. Numerous transmission electron microscopy observations have been conducted to obtain an accurate microstructural characterization, and a better knowledge of the glassy phase composition and localization. Crack propagation is then measured at high temperature using the double torsion technique. Crack healing observed during these tests is especially studied in the case of zircon. Internal friction measurements have also been conducted to try to characterize the glassy phase. In addition, the creep behavior has been studied using bending tests. These results are completed with others obtained on previously indented specimens to better understand the fracture behavior. A threshold has been observed in the crack propagation in zircon. These results are close to those obtained with the double torsion technique
Pedraza, Alvaro. "Propriétés thermomécaniques d’enrobés multi-recyclés." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSET001/document.
Full textReuse of Reclaimed Asphalt Pavement (RAP) is considered as one of the main solutions to cope with the objectives of worldwide sustainable development. In this way, the reuse of RAP in bituminous mixtures has been matter of study in previous papers (Chen et al., 2009; Kaur et al., 2013; Mogawer et al., 2012; Ru-bio et al., 2012; Sias Daniel et al., 2013; Valdés et al., 2011) and had concluded be economically profitable as well as had demonstrated the durability of the tested materials. Nowadays, new topics overcome dealing with how increase the RAP content and how many times RAP could be recycled. In France, a collaborative research and development project called “Multi-recycling of warm foam bitu-minous mixtures” (MURE) have brought together all the stakeholders involved in road construction. The pro-gram has run since March 2014. The scientific part of MURE project is IMPROVMURE project (Innovation for Materials and Processes for Improving the Multi-Recycling of Mixes). The overall budget of the project were €4.7M, €2.3M of which been provided by the ANR (National Re-search Agency) in the framework of the IMPROVMURE project, which has gotten under way in March 2014 and its main goal of characterizing the remobilization of the binder from recycled materials was the evalua-tion of the durability of mixes with the addition of binder. Thus, one objective of this project is to determine the thermomechanical properties of multi-recycled bi-tuminous mixtures, so in the context of this goal the current study was made. Likewise this investigation was a collaboration between the Tribology and System Dynamics Laboratory (LTDS) of the University of Lyon/ENTPE (“Ecole Nationale des Travaux Publics de l’Etat” ) and the French company EIFFAGE Infra-structures. For this study 15 types of bituminous mixtures were tested, the bituminous mixtures were produced in the laboratory and construction site, also two different techniques were studied for mixtures elaboration: hot and warm using foamed bitumen in both cases, the RAP content on these were 0%, 40%, 70% and even close to 100% produced after several recycling operations (up to 3 cycles). All bituminous mixtures have 3 invariants: the first is the same aggregate grading curves (except the bituminous mixture with 100% of RAP). The second one is the total binder content (5.4% in total weight). The last is classified as BBSG-03 0/10 bitu- 15 minous mixture, as is specified in the European standards for classification of bituminous mixtures (NF EN 13108-1 - 2007). Three domains of behaviour were studied: Linear Viscoelastic behaviour (LVE), cracking behaviour at low temperature and the fracture behaviour at low temperature. The LVE was studied considering complex modulus tests on bituminous mixtures and were performed in tension/compression on cylindrical samples, thus LVE behaviour was then modelled with 2S2P1D rheological model, developed at Uni. of Lyon / ENTPE, for the other hand cracking behaviour at low temperature was studied considering Thermal Stress Restrained Specimen Tests (TSRST), and finally fracture behaviour at low temperature was studied with the crack propagation tests as a monotonic loading
Hebert, Jean-Pierre. "Contribution à l'étude du comportement thermomécanique de matériaux composites pour applications aérospatiales." Lyon 1, 1992. http://www.theses.fr/1992LYO10069.
Full textHernandez, Jean-François. "Comportement thermomécanique des bétons réfractaires et des revêtements monolithiques des poches a acier : influence de la déshydratation." Paris 6, 2000. http://www.theses.fr/2000PA066519.
Full textLallam, Abdelaziz. "Corrélations entre les propriétés thermomécaniques de films diélectriques plastiques et les caractéristiques de composants passifs." Lyon 1, 1985. http://www.theses.fr/1985LYO19054.
Full textLeroy, Lise. "Structure et comportements thermomécaniques de matériaux à base d’amidon." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10199/document.
Full textThe present work, carried out in the frame of the WIBIO project which deals with the development of partly bio-based food packaging, is aimed at understanding relationships between structure and thermo-mechanical properties of starch based films.The study of native starches underlines the influence of water on the thermal properties and the difficulty to achieve destructuration without promoting recrystallization. Mechanical characterization of water plasticized thermoplastic starch does not enable to conclude on the respective influences of molar mass and composition. Also, in spite of achieving a fairly large draw ration, no significant orientation phenomenon is revealed from X-ray analysis. Structural investigations of starch triesters, obtained by full substitution of starch OH groups by alkyl chains, show that these hydrophobic materials display a sheet-like structure in which the amylaceous chains are confined in planar zones separated by extended alkyl chains. Starch composition has no influence on the thermal properties of these materials. On the contrary, alkyl chain length induces a drastic reduction in drawability, as soon as the chains are long enough to interpenetrate and crystallize. In-situ X-ray diffraction experiments reveal the gradual orientation of amylaceous chains towards the draw axis during the stretching of fully amorphous compositions
Homerin, Pierre. "Préparation et caractérisation de matériaux céramique à base d'alumine renforces par une dispersion de zircone." Lyon, INSA, 1987. http://www.theses.fr/1987ISAL0041.
Full textNavarri, Philippe. "Etude du séchage par rayonnement infrarouge : application à un produit capillaro-poreux et à une enduction." Lyon 1, 1992. http://www.theses.fr/1992LYO10265.
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