Tailoring nanocrystalline materials towards potential applications

Klassen, Thomas; Bohn, Rainer; Fanta, G.; Oelerich, W.; Eigen, N.; Gärtner, F.; Aust, E.; Bormann, R.; Kreye, H.

doi:10.3139/146.030610

Cited by 13 publications

(7 citation statements)

References 21 publications

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“…The smaller grain size raises the volume fraction of grain boundaries and is associated with an increase of intrinsic surface entailing accelerated grain boundary diffusion [9]. This fact, together with reduced dissociation energies of both H 2 and MgH 2 near to surfaces [10e12], leads to faster kinetics in nanocrystalline materials compared to their coarse-grained counterparts [13,14]. The influence of surfaces is also borne out by the fact that samples which are not in powdery or filed condition are usually not capable of absorbing hydrogen within reasonable time [15].…”

Section: Introductionmentioning

confidence: 99%

Long-term hydrogen storage in Mg and ZK60 after Severe Plastic Deformation

Grill

Horky

Panigrahi

et al. 2015

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Long-term hydrogen storage in Mg and ZK60 after Severe Plastic Deformation

Grill

Horky

Panigrahi

et al. 2015

International Journal of Hydrogen Energy

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“…[32] REVIEWS (microcrystalline) and milled (nanocrystalline) structures and with an oxide catalyst in the NS powder. [51] It may be noted that the hydride formation reaction in the microcrystalline material is slow. Less than half of the full hydrogen storage capacity was realized in less than 30 min.…”

Section: Hydrogen Storage Materialsmentioning

confidence: 99%

“…Thus, the fast kinetics, in combination with one of the highest reversible storage capacities, qualifies these Mg-based materials for application in zero-emission vehicles. [51] …”

Section: Hydrogen Storage Materialsmentioning

confidence: 99%

Recent Developments in Nanostructured Materials

Suryanarayana

2005

Adv Eng Mater

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Nanostructured materials with extremely fine grain sizes, typically less than 100 nm, have been shown to exhibit extremely high strength and hardness, increased diffusivity, useful sintering characteristics, and other unusual properties. Significant developments have taken place in recent years in trying to achieve high strength and ductility at the same time. New and potential applications are also being sought after. Several commercial ventures have also started (estimated to be around 1000 in different parts of the world). This overview will present the recent developments in our understanding of the mechanical behavior and molecular dynamics simulation studies, highlight the present unresolved issues, and discuss some of the promising applications for these novel and exciting materials.

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“…Nanocrystalline materials usually exhibit different physical properties in comparison with coarse polycrystals. The formation of metastable phases and pronounced hydrogen absorption can be expected [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%