Leiva, Daniel RodrigoDe Souza Villela, André CastroDe Oliveira Paiva-Santos, Carlos [UNESP]Fruchart, DanielMiraglia, SalvatoreIshikawa, Tomaz ToshimiBotta, Walter José2014-05-272014-05-272011-05-25Diffusion and Defect Data Pt.B: Solid State Phenomena, v. 170, p. 259-262.1012-0394http://hdl.handle.net/11449/72439Magnesium complex hydrides as Mg 2FeH 6 are interesting phases for hydrogen storage in the solid state, mainly due to its high gravimetric and volumetric densities of H2. However, the synthesis of this hydride is not trivial because the intermetallic phase Mg2Fe does not exist and Mg and Fe are virtually immiscible under equilibrium conditions. In this study, we have systematically studied the influence of the most important processing parameters in reactive milling under hydrogen (RM) for Mg 2FeH 6 synthesis: milling time, ball-to-powder weight ratio (BPR), hydrogen pressure and type of mill. Low cost 2Mg-Fe mixtures were used as raw materials. An important control of the Mg 2FeH 6 direct synthesis by RM was attained. In optimized combinations of the processing parameters, very high proportions of the complex hydride could be obtained. © (2011) Trans Tech Publications.259-262engHydrogen storageMg 2FeH 6 synthesisNanocompositesReactive millingBall-to-powder weight ratioComplex hydridesDirect synthesisEquilibrium conditionsHydrogen pressuresIntermetallic phaseLow costsMagnesium complexesMilling timeProcessing parametersVolumetric densityHydrogenMagnesiumMilling (machining)Transition metalsBall millingTrabalho apresentado em evento10.4028/www.scientific.net/SSP.170.259Acesso aberto2-s2.0-79956285745