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Publications: Articles

Toutes :: 2003, ... , 2011, 2012, 2013, 2014
Tous :: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z 
Tous :: J. Martin, ... , Jelen, Jenko, Jenks, ... , Jurewicz 
References par page: Mots clefs Voir les resumes


Jana, A., Briquet, L., WIRTZ, T., Philipp, P. and Henrion, G.
Nuclear Instruments and Methods in Physics Research B: Beam Interactions with Materials and Atoms, 326:341-344

Resume: The deposition of multiple carbon atoms on a crystalline silicon (Si) surface is modelled at 5 eV energy by using molecular dynamics simulations combined with a third generation force field that includes bond breaking and formation. Force field parameters are taken from a previous work. These simulations allow for atomic scale insights into the deposition mechanisms and an easier comparison with experimental observations. The results, including distributions of implantation depth, carbon concentrations, sticking coefficients, radial distribution function, and angular distributions are compared for different incidence angles. Due to the deposition of carbon atoms inside the silicon structure, silicon carbide starts to form. The crystalline structure has been investigated for different conditions to get a better understanding of the damaging and growth mechanisms. It is found that a lot of deformation is accumulated in the area of deposition near to the surface but underneath the surface the silicon has still a more crystalline structure. The variation of the silicon (carbide) structu re slightly depends on the angle of incidence. For the conditions used for these simulations, the sticking probability is always high and varies between 95% and 100%, which can be attributed to the high affinity of carbon for silicon.

Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS

Bellot, Jean-Pierre, De Felice, Valerio, Dussoubs, Bernard, Jardy, Alain and Hans, Stephane
ISSN: 1073-5615

Resume: Gas-stirring ladle treatment of liquid metal has been pointed out for a long time as the processing stage is mainly responsible for the inclusion population of specialty steels. A steel ladle is a complex three-phase reactor, where strongly dispersed inclusions are transported by the turbulent liquid metal/bubbles flow. We have coupled a population balance model with CFD in order to simulate the mechanisms of transport, aggregation, flotation, and surface entrapment of inclusions. The simulation results, when applied to an industrial gas-stirring ladle operation, show the efficiency of this modeling approach and allow us to compare the respective roles of these mechanisms on the inclusion removal rate. The comparison with literature reporting data emphasizes the good prediction of deoxidating rate of the ladle. On parallel, a simplified zero-dimensional model has been set-up incorporating the same kinetics law for the aggregation rate and all the removal mechanisms. A particular attention has been paid on the averaging method of the hydrodynamics parameters introduced in the flotation and kinetics kernels.

Equipe: Centre de Compétences : ERMIONE informatique et calcul

Baringhaus, Jens, Ruan, Ming, Edler, Frederik, Tejeda, Antonio, Sicot, Muriel, Taleb-Ibrahimi, Amina, Li, An-Ping, Jiang, Zhigang, Conrad, Edward H., Berger, Claire, Tegenkamp, Christoph and de Heer, Walt A.
NATURE, 506(7488):349-354
ISSN: 0028-0836

Equipe: Département P2M : Surfaces et Spectroscopies

Jeanmaire, G., Dehmas, M., Redjaïmia, A., PUECH, S. and Fribourg, G.
Materials Characterization, 98:193-201
ISSN: 1044-5803

Equipe: Département SI2M : Microstructures et Contraintes

DIEHL, R. D., Li, H. I., Su, S. Y., Mayer, A., Stanisha, N. A., Ledieu, J., Lovelock, K. R. J., Jones, Robert G., Deyko, A., Wearing, L. H., McGrath, R., Chaudhuri, A. and Woodruff, D. P.
ISSN: 0031-9007

Equipe: Département CP2S : Métallurgie et Surfaces

Leroy, M.-A., Bataille, A.M., Dkhil, B., Porcher, F., Barbier, A., Jacques, V.L.R., Lu, Y., Bellouard, C., Hauet, T., Ravy, S., Herrero-Martin, J., Gatel, C., Bouzehouane, K., Gukasov, A., Andrieu, S. and Tiusan, C.
Physical Review B - Condensed Matter and Materials Physics, 90(3)

Equipe: Département P2M : Nanomagnétisme et Electronique de Spin

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