| Texto completo | |
| Autor(es): |
Jorge, Jr., Alberto Moreira
[1, 2, 3]
;
de Lima, Gisele Ferreira
[4]
;
Martins Triques, Maria Regina
[1]
;
Botta, Walter Jose
[1]
;
Kiminami, Claudio Shyinti
[1]
;
Nogueira, Ricardo Pereira
[3]
;
Yavari, Alain Reza
[2]
;
Langdon, Terence G.
[5, 6, 7]
Número total de Autores: 8
|
| Afiliação do(s) autor(es): | [1] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil
[2] UJF, INPG, CNRS, SiMap Lab, UMR 5266, F-38402 St Martin Dheres - France
[3] UJF, INPG, CNRS, LEPMI, UMR 5279, F-38402 St Martin Dheres - France
[4] Univ Fed Sao Paulo, BR-12231280 Sao Jose Dos Campos, SP - Brazil
[5] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 - USA
[6] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 - USA
[7] Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants - England
Número total de Afiliações: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 39, n. 8, p. 3810-3821, MAR 6 2014. |
| Citações Web of Science: | 28 |
| Resumo | |
It is feasible to obtain a significant enhancement of the hydrogen storage capability in magnesium by selecting an appropriate sequence of mechanical processing. The Mg metal may be produced with different textures which will then give significant differences in the absorption/desorption kinetics and in the incubation times for hydrogenation. Using processing by equal-channel angular pressing (ECAP), different textures may be produced by changing both the numbers of passes through the ECAP die and the ram speed. Significant grain refinement is easily avoided by using commercial coarse-grained magnesium as the starting material. The use of cold rolling after ECAP further increases the preferential texture for hydrogenation. The results show that the hydriding properties are enhanced with a (002) texture where the improved kinetics lie mainly in the initial stages of hydrogenation. An incubation time is associated with the presence of a (101) texture and this is probably due to the magnesium oxide stability in this direction. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. (AU) | |
| Processo FAPESP: | 11/51245-8 - Grain refinement and properties of ultrafine-grained AI, Mg and Ti alloys produced by equal-channel angular pressing with back-pressure |
| Beneficiário: | Alberto Moreira Jorge Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |