Gotowa bibliografia na temat „Yttrium – Alliages”
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Rozprawy doktorskie na temat "Yttrium – Alliages"
Nguyen, Cong Tung. "Etude des mécanismes d'oxydation des alliages FeCrAl à haute température (1100°C)". Clermont-Ferrand 2, 2009. http://www.theses.fr/2009CLF21941.
Pełny tekst źródłaMartin, Michel. "Etude par spectroscopie de photoélectrons et par photoémission inverse d'alliages métalliques binaires amorphes". Lyon 1, 1986. http://www.theses.fr/1986LYO10085.
Pełny tekst źródłaVilasi, Michel. "Étude de l'oxydation et de la corrosion à haute température des phases constitutives d'un alliage NiCoCrAIYTa". Nancy 1, 1989. http://www.theses.fr/1989NAN10034.
Pełny tekst źródłaMichel, Grégory. "Recherche de nouveaux superalliages de fonderie pour fibrage à très haute température". Thesis, Nancy 1, 2011. http://www.theses.fr/2011NAN10131.
Pełny tekst źródłaThe spinner used to product glass wool for thermal building insulation undergoes several stresses (chemical, mechanical and thermal) at high temperature. The lifetime of the spinner is limited by oxidation by hot gases, corrosion by molten glass or creep deformation. The first part of this thesis has concerned the improvement of the mechanical properties of the alloys for the fiberizing at 1200°C. First, the bulk chromium content of the usual cobalt-base alloys has been decreased to increase their refractoriness at constant microstructure. However, this reduction has degraded the oxidation behavior of these alloys. To keep a good oxidation behavior, a surface chromium enrichment of the Cr-impoverished alloys is achieved by pack-cementation technique. The creep behavior of these alloys is kept at a good level. Secondly, several new metallurgical systems were explored: alloys based on nickel and iron and reinforced by heavy elements in solid solution or by precipitates inter metallic particles. The refractoriness and the oxidation behavior appeared to be interesting but the creep deformation was disappointing. The second part of this work has concerned the improvement of the oxidation and corrosion properties of the alloys for the process at 1000-1050°C. Two ways have been explored: a chromium enrichment on the sub-surface or an addition of a reactive element, as yttrium. The second solution has given interesting results with a significant improvement of the oxidation behavior, and particularly in cyclic oxidation
Maret, Mireille. "Étude de la structure et des propriétés thermodynamiques des alliages amorphes Ni33 Y67 et Cu33 Y67". Grenoble INPG, 1986. http://www.theses.fr/1986INPG0004.
Pełny tekst źródłaFrancès, Maurice. "Oxydation et corrosion à chaud par NA:(2)SO::(4) de l'alliage nicocral(Y)+Ta coulé et projeté". Nancy 1, 1986. http://www.theses.fr/1986NAN10054.
Pełny tekst źródłaBonnet, Loïck. "Elaboration par frittage réactif de céramiques monolithiques et composites à base de grenat d'yttrium et d'aluminium : Etude des relations entre microstructures et propriétés optiques". Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0096/document.
Pełny tekst źródłaThis work is devoted to the elaboration of yttrium and aluminum garnets-based transparent composite ceramics with different (Nd+Y)/Al stoichiometric ratios ranged from 0.40 to 0.70, around the ratio corresponding to the Nd:YAG stoichiometric composition ((Nd+Y)/Al = 0.6000) by under-vacuum reactive-sintering. Pressure-casting of stable and homogeneous suspensions of mixing Al2O3-Y2O3-Nd2O3 was achieved. Study of microstructural, thermal and optical properties of these ceramics has made it possible to highlight the influence of (Nd+Y)/Al ratio on garnet phase formation and densification kinetics, and on optical properties. Thus, it appears that for ceramic with a ratio higher than 0.6000, corresponding to an yttrium-rich sample, the previously mentioned kinetics are decreased but transparence and lasers properties are less degraded, contrary to aluminum-rich ceramics ((Nd+Y)/Al < 0.6000). Moreover, study of Nd:YAP-Al2O3 powders mixing brings out Nd:YAG phase formation mechanism, suggesting the existence of solid-gas reaction with evaporation-condensation of aluminum-rich reactive phase. Finally, feasibility of Nd:YAG ceramics with high dopant content (4 at. %) has shown the interest of these materials in order to generate third-order nonlinear optical properties, especially self-focusing phenomenon of light beams by Kerr effect
Lelièvre-Berna, Eddy. "Frustration et instabilité de l'antiferromagnétisme itinérant (composés TMn₂)". Grenoble 1, 1994. http://www.theses.fr/1994GRE10026.
Pełny tekst źródłaGhidini, Massimo. "Étude de systèmes magnétiques nanostructurés préparés par irradiation d'ions lourds de haute énergie". Université Joseph Fourier (Grenoble ; 1971-2015), 1995. http://www.theses.fr/1995GRE10198.
Pełny tekst źródłaWuchner, Sip Sibylle. "Etude des processus d'aimantation de tri-couches magnétiques à base d'alliages amorphes de terres rares et de cobalt". Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10070.
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