The hydrogen absorption–desorption performances of Mg–Co–X ternary alloys with BCC structure

Zhang, Yao; Tsushio, Yoshinori; Enoki, Hirotoshi; Akiba, Etsuo

doi:10.1016/j.jallcom.2004.10.011

Cited by 31 publications

(19 citation statements)

References 15 publications

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“…Mechanical alloying has also been used for the synthesis of Mg-TM-V (TM: transition metals) and Mg-Co alloys with a BCC structure [20][21][22]. Kondo and Sakurai have prepared Mg-Ca-V BCC alloy by mechanical alloying of CaMg 2 and vanadium [23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, phase transformation, and hydrogen storage properties of ball-milled TiV0.9Mn1.1

Huot

Enoki

Akiba

2008

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Synthesis, phase transformation, and hydrogen storage properties of ball-milled TiV0.9Mn1.1

Huot

Enoki

Akiba

2008

Journal of Alloys and Compounds

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“…4) Furthermore, the diffusion of hydrogen in BCC metals is significantly faster than that in FCC and HCP metals. 5) In recent years, many attempts to synthesize Mg-based alloys with a BCC structure have been made and novel MgCo 6,7) and Mg-Tm-V (Tm: transition metals) 8) alloys have been successfully synthesized by means of ball milling. In our previous works, Mg-Ti alloys with a BCC structure have been successfully synthesized by means of ball milling.…”

Section: Introductionmentioning

confidence: 99%

Effect of Li Addition on Synthesis of Mg-Ti BCC Alloys by means of Ball Milling

2007

Self Cite

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The effect of Li addition to Mg on synthesis of Mg-Ti BCC alloys by means of ball milling was studied. Mg-x at%Li (x ¼ 4; 20; 46) alloys prepared by the induction melting method consisted of the HCP phase (Mg-type), the HCP phase + the BCC phase (Li-type) and the BCC phase, respectively. Lattice parameters of the HCP phase decreased with the increase in x, whereas those of the BCC phase at x ¼ 20 and 46 were smaller than that of Li. Mg-x at%Li (x ¼ 4; 20; 46) alloys and Ti were milled for 50-200 h in an argon atmosphere. Formation of Mg 96 Li 4 Ti 100 BCC alloy was confirmed by X-ray diffraction (XRD) measurements after 50 h milling. By Li addition to Mg, the synthesis time of the BCC phase was shortened. Li made Mg deformation facile by the activation of the non-basal slips in Mg, and raw materials were efficiently milled. The crystallite size of Ti was readily reduced and formation of the BCC phase was accelerated. The crystallite size and lattice parameter of Mg 96 Li 4 Ti 100 BCC alloy were similar to those of Mg 100 Ti 100 BCC alloy.

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“…In particular, Akiba's group has made an extensive study of the synthesis of Mg-Ti [48,49], Mg-Co [50][51][52] and Mg-Ni [53,54] BCC alloys by means of ball milling. In this review we will limit our discussion to the Mg-Ti system.…”

Section: Mg-based Bccmentioning

confidence: 99%

Nanocrystalline Metal Hydrides Obtained by Severe Plastic Deformations

Huot

2012

Metals

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It has recently been shown that Severe Plastic Deformation (SPD) techniques could be used to obtain nanostructured metal hydrides with enhanced hydrogen sorption properties. In this paper we review the different SPD techniques used on metal hydrides and present some specific cases of the effect of cold rolling on the hydrogen storage properties and crystal structure of various types of metal hydrides such as magnesium-based alloys and body centered cubic (BCC) alloys. Results show that generally cold rolling is as effective as ball milling to enhance hydrogen sorption kinetics. However, for some alloys such as TiV 0.9 Mn 1.1 alloy ball milling and cold rolling have detrimental effect on hydrogen capacity. The exact mechanism responsible for the change in hydrogenation properties may not be the same for ball milling and cold rolling. Nevertheless, particle size reduction and texture seems to play a leading role in the hydrogen sorption enhancement of cold rolled metal hydrides.

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The hydrogen absorption–desorption performances of Mg–Co–X ternary alloys with BCC structure

Cited by 31 publications

References 15 publications

Synthesis, phase transformation, and hydrogen storage properties of ball-milled TiV0.9Mn1.1

Synthesis, phase transformation, and hydrogen storage properties of ball-milled TiV0.9Mn1.1

Effect of Li Addition on Synthesis of Mg-Ti BCC Alloys by means of Ball Milling

Nanocrystalline Metal Hydrides Obtained by Severe Plastic Deformations

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