Zobrazeno 1 - 10
of 134
pro vyhledávání: '"Giorgio Cocco"'
Publikováno v:
Journal of Alloys and Compounds. 473:180-184
This work is aimed at quantifying mechanochemical effects in reactive solid–gas systems. It deals in particular with the kinetics of H 2 absorption processes on a Mg 2 Ni/Ni composite under thermal and mechanical activation. In a first series of ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::367eddd68b4ae2e76aa609c0da18546f
https://doi.org/10.1016/j.jallcom.2008.06.026
https://doi.org/10.1016/j.jallcom.2008.06.026
Autor:
Francesco Delogu, Giorgio Cocco
Publikováno v:
Journal of Alloys and Compounds. 465:540-546
A systematic investigation on different systems has been performed in order to ascertain the possible role of local temperature rise at impacts in the mechanism of mechanically induced phase transformation processes. High-purity commercial powders ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbf35ae668fc73dbb1f8778af4da1a71
https://doi.org/10.1016/j.jallcom.2007.11.024
https://doi.org/10.1016/j.jallcom.2007.11.024
Publikováno v:
Journal of Materials Science. 43:5193-5198
The present investigation focuses on the kinetics of hydrogen absorption in Mg2Ni powders subjected to thermal or mechanochemical activation. The process was initially carried out under isobaric-isothermal conditions in a mechanochemical reactor at r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b465f8b87b49a1fc6ffd8bf7de49799
https://doi.org/10.1007/s10853-008-2719-6
https://doi.org/10.1007/s10853-008-2719-6
Publikováno v:
Journal of Alloys and Compounds. 454:83-88
We report on the structural evolution and thermodynamic features of Zr-based amorphous and nanostructured powders subjected to mechanically induced hydrogen absorption. Zr 55 Cu 30 Al 10 Ni 5 and Zr 69.5 Cu 12 Al 7.5 Ni 11 compositions were studied.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95c5c9dae3bf63ca0da377faff9a15dd
https://doi.org/10.1016/j.jallcom.2006.12.109
https://doi.org/10.1016/j.jallcom.2006.12.109
Publikováno v:
Renewable Energy. 33:237-240
Hydrogen absorption and desorption properties in nanocrystalline LaMg 2 Ni are presented. Nanostructured phases have been obtained by milling grain coarse ingot and by mechanically alloying the parent elements. The structural and hydriding properties
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da8b332559c18f1beb0bc308533500ee
https://doi.org/10.1016/j.renene.2007.05.011
https://doi.org/10.1016/j.renene.2007.05.011
Publikováno v:
Scripta Materialia. 57:964-967
An equiatomic Co–Fe solid solution was synthesized by mechanical processing. A dissolution process of Co in Fe was observed. Its kinetic characterization permitted a reliable estimate of the number of Co atoms dissolved in collision events. This nu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1487e1c584b948cfeff62926d4b91a08
https://doi.org/10.1016/j.scriptamat.2007.07.010
https://doi.org/10.1016/j.scriptamat.2007.07.010
Autor:
Francesco Delogu, Giorgio Cocco
Publikováno v:
Journal of Alloys and Compounds. 436:233-240
In mechanical treatments by ball milling, the mechanical energy is transferred to powders when these are trapped between colliding milling tools. Under such processing conditions, the number of collisions is therefore the natural quantity to which re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d94604f6b746b130cda4ef62a848240e
https://doi.org/10.1016/j.jallcom.2006.07.029
https://doi.org/10.1016/j.jallcom.2006.07.029
Autor:
Francesco Delogu, Giorgio Cocco
Publikováno v:
Journal of Materials Science. 42:4356-4363
A phenomenological model is developed for describing the kinetics of the crystallite size refinement process of Cu powder under mechanical treatment conditions. Based on the evidence that collisions represent the elementary events of energy transfer,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cd89eb6563441bc87adb2284d116487
https://doi.org/10.1007/s10853-006-0681-8
https://doi.org/10.1007/s10853-006-0681-8
Autor:
Francesco Delogu, Giorgio Cocco
Publikováno v:
Journal of Alloys and Compounds. 420:246-250
The present work discusses the preparation of nanostructured ceramics by mechanical processing. Coarse-grained powders of different oxides, carbides, borides and silicides have been subjected to mechanical treatment inside a commercial ball mill unde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fa5b31f55320c87b8aa0e01346ba0c7
https://doi.org/10.1016/j.jallcom.2005.10.037
https://doi.org/10.1016/j.jallcom.2005.10.037
Autor:
Francesco Delogu, Giorgio Cocco
Publikováno v:
Materials Science and Engineering: A. 422:198-204
A systematic study of the crystallite size refinement process of elemental species under mechanical processing conditions has been carried out. Elemental powders were treated in a milling device at different intensities. The dependence of the rate of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::befdf4ae1ad4d1d0dc0a14bb2a0c65d6
https://doi.org/10.1016/j.msea.2006.02.032
https://doi.org/10.1016/j.msea.2006.02.032