Letteratura scientifica selezionata sul tema "Nitruration de surface"
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Articoli di riviste sul tema "Nitruration de surface"
Capan, Levon, Omer Cimen, Hasan Cep e Zerrin Oktem. "Nitruration par échange d'ions de l'acier rapide pour outils AISI M2". Matériaux & Techniques 84 (1996): 13–16. http://dx.doi.org/10.1051/mattech/199684060013s.
Testo completoNouicer, El Amine, Hacene Chadli, Mohammed-Hachemi Khireddine, Djamila Khireddine e Lazhar Yahia. "Caractérisation des alliages à base de titane : influence d'un traitement de surface par nitruration". Annales de chimie Science des Matériaux 32, n. 6 (1 novembre 2007): 665–72. http://dx.doi.org/10.3166/acsm.32.675-672.
Testo completoDelogu, P., T. Dikonimos-Makris, R. Giorgi, J. Lascovich, L. Caneve e S. Scaglione. "XPS and AES study of Al2O3/Ti6Al4V interface: Influence of oxidation and nitruration of the metal surface". Surface and Interface Analysis 22, n. 1-12 (luglio 1994): 236–41. http://dx.doi.org/10.1002/sia.740220152.
Testo completoRabbe, L. M., J. Rieu e P. Combrade. "Comportement en frottement-corrosion sous petits débattements de couples de biomatériaux TA6V/PMMA et 316L/PMMA. Influence des traitements de surface par implantation et nitruration ioniques." Revue de Métallurgie 91, n. 9 (settembre 1994): 1212. http://dx.doi.org/10.1051/metal/199491091212.
Testo completoGonzalez-Valenzuela, C., L. Cota, R. Gonzalez-Valenzuela, W. de la Cruz e A. Duarte-Möller. "Study by AES of the titanium nitruration in the growing of TiN thin films by PLD technique". Applied Surface Science 252, n. 10 (marzo 2006): 3401–5. http://dx.doi.org/10.1016/j.apsusc.2005.05.058.
Testo completo"Low pressure plasma nitriding of austenitic stainless steels (Nitruration en plasma basse pression d'aciers inoxydables austenitiques) Hertz, D. and Lebrun, J.P. Proc. 9th International Congress on Heat Treatment and Surface Engineering and 5th French Open International Conference on Heat Treatment, Nice-Acropolis, France (26–28 Sept. 1994) 301–310 (in French)". International Journal of Fatigue 18, n. 1 (gennaio 1996): 60. http://dx.doi.org/10.1016/0142-1123(96)82771-x.
Testo completoTesi sul tema "Nitruration de surface"
Leblond, Edith. "Nitruration de l'aluminium par voies ioniques". Ecully, Ecole centrale de Lyon, 1998. http://www.theses.fr/1998ECDL0005.
Testo completoMarchand, Jean-Luc. "Contribution à la modélisation du procédé de nitruration ionique". Vandoeuvre-les-Nancy, INPL, 1988. http://www.theses.fr/1988NAN10180.
Testo completoGuillot, Benjamin. "Etude de procédés de préparation de surface avant nitruration - fiabilité du procédé". Thesis, Paris, ENSAM, 2016. http://www.theses.fr/2016ENAM0068/document.
Testo completoThe gaseous nitriding of steel parts is a thermochemical process that generates a mechanical properties gradient at the surface by nitrogen diffusion. The treated parts indicate an important residual stress and hardness gradient, optimized for power transmission applications used in aeronautics and motor sports. The increase of nitrogen concentration is due to the catalytic decomposition of ammonia at the iron-based surface of parts. However, the process is extremely sensitive to the surface state of parts that includes geometrical, mechanical but also chemical properties. This state can inhibit the catalytic decomposition properties and the nitrogen diffusion. This deactivation can have different origins, such as the adsorption of a poisoning element or the fouling of the surface of the parts. The catalytic deactivation phenomenon is studied since decades. However, few publications are available in the case of its application in the specific case of the gaseous nitriding of steel. A better understanding of the nitriding inhibition would improve the reliability of this industrial process. In order to answer this demand, an experimental approach, based on industrial case and bibliographical study, is proposed. A pollution study obtained from machining oil residues, carbon deposit, or sulfur poisoning is proposed. Moreover, an experimental approach, aiming to determine the impact of initial mechanical properties on the nitriding process is proposed. Thermogravimetric analyses coupled to observations and mechanical properties analyses enable to develop the knowledge of the nitrided surfaces deactivation processes. After this study, the surface activation capacity of three in-situ processes, namely oxidation, urea and ammonium chloride, over the previously studied contaminations is determined
Petat, Bertrand. "Contribution à l'étude de la nitruration du fer par un plasma continu-pulsé". Nancy 1, 1990. http://www.theses.fr/1990NAN10541.
Testo completoPerito, Cardoso Rodrigo Belmonte Thierry Henrion Gérard. "Plasmas micro-ondes en cavité résonnante à la pression atmosphérique étude des plasmas d'hélium et applications au traitement des matériaux /". S. l. : INPL, 2007. http://www.scd.inpl-nancy.fr/theses/2007_PERITO_CARDOSO_R.pdf.
Testo completoMalvos, Hugues. "Diagnostic de décharges et post-décharges établies a diverses fréquences (de 13,56 mhz a 2450 mhz) dans des mélanges ar-n#2-h#2-ch#4 en écoulement : contribution à la réalisation et à la modélisation d'un réacteur de nitruration fonctionnant en post-décharge micro-onde". Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL041N.
Testo completoSamih, Youssef. "Thermomechanical surface treatments of austenitic stainless steels and their effects on subsequent nitriding during “Duplex” treatments". Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0100/document.
Testo completoOptimizing the surface microstructure and properties is very important to obtain high performance behaviour. Applying appropriate mechanical and thermochemical treatments has been the prime objective of metallurgists. More recently, and particularly for the stainless steels, the Plasma Nitriding was found to be an efficient technique for enhancing the hardness and wear resistance. However, as the nitriding temperature is about 500 °C, the formation of nitrides on the surface leads to a decrease of the corrosion resistance of these alloys. Recent works have shown that using a mechanical pre-treatment allows to decrease the treatment temperature and duration, and also to enhance the nitrogen diffusion within the stainless steels surfaces. In the present work, performances of different Duplex treatments (mechanical + thermochemical) are studied. The Surface Mechanical Attrition Treatment (SMAT), cold rolling and the High Current Pulsed Electron Beam (HCPEB) are used as surface activators prior to plasma nitriding of stainless steels. Before studying the effect of surface activation on the nitrogen diffusion, the effect of the different SMAT parameters (balls size, balls nature, treatment duration … etc.) on the microstructure is analysed. A new technique based on the notion of Geometrically Necessary Dislocations (GND) is used to depict the thickness of the different SMAT-induced layers and compare the effect of the processing parameters. Then, comparative analysis of the results obtained after nitriding of mechanically deformed samples leads to quantify the effect of the different Duplex treatments. X-Ray Diffraction, Secondary Electron Microscopy associated with Electron BackScattered Diffraction (EBSD), hardness measurement and chemical composition analysis by Glow Discharge Optical Emission Spectroscopy (GD-OES) showed the importance of the surface microstructure and deformation state on the nitrogen diffusion
Bockel-Macal, Savine. "Étude d'un procède de nitruration assistée par une post-décharge micro-ondes Ar-N₂-H₂ en écoulement : diagnostics de la phase gazeuse et modélisation du réacteur". Vandoeuvre-les-Nancy, INPL, 1997. http://www.theses.fr/1997INPL018N.
Testo completoIacob, Constantin. "Transfert thermique et transfert de masse en lit fluidise. Application à la nitruration d'aciers". Rouen, 1996. http://www.theses.fr/1996ROUES020.
Testo completoOseguera-Peña, Joaquin Esteban. "Contribution à l'étude de la nitruration des aciers entre 3 et 500 hPa dans l'azote et différents mélanges gazeux N2-H2 ou Ar-N2 en conditions de post-décharge micro-onde en écoulement". Vandoeuvre-les-Nancy, INPL, 1990. http://www.theses.fr/1990INPL018N.
Testo completoAtti di convegni sul tema "Nitruration de surface"
Kaczorowski, Damien. "Durcissement des surfaces par nitruration". In Etats de surface dans les réacteurs nucléaires : enjeux, avancées et perspectives. Les Ulis, France: EDP Sciences, 2017. http://dx.doi.org/10.1051/jtsfen/2017eta08.
Testo completo