Absorption and desorption properties of the Mg + X wt.%TiFe composite, X = 2.5 and 40, manufactured by high-energy ball milling
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2017
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LATIN AMERICAN CONFERENCE ON METASTABLE AND NANOSTRUCTURED MATERIALS, 7th
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This work compares the absorption and desorption properties of the Mg + TiFe
composite with additions of 2.5 and 40 wt. % TiFe. The composite was produced by
high-energy ball milling during 36 h at 600 rpm under purified argon atmosphere. The
TiFe was previously milled in ethanol absolute to refine the particle size. The
composites materials were characterized by X-ray diffraction (XRD), and scanning
electron microscopy (SEM). The kinetics of hydrogen absorption and desorption were
evaluated by differential scanning calorimetry (DSC) and by a Sievert´s type apparatus.
For both evaluated compositions, the main results revealed that it was possible absorb
H2 at room temperature. Even a few TiFe content (2.5 wt. %) was enough to obtain
kinetic improvements. The TiFe had an important role in the kinects of H2 absorption of Mg in
a broad range of temperatures, including room temperature.
Como referenciar
SILVA, R.A.; LEAL NETO, R.M.; COUTINHO, G.C.S.; LEIVA, D.R.; ISHIKAWA, T.T.; KIMINAMI, C.S.; BOTTA, W.J. Absorption and desorption properties of the Mg + X wt.%TiFe composite, X = 2.5 and 40, manufactured by high-energy ball milling. In: LATIN AMERICAN CONFERENCE ON METASTABLE AND NANOSTRUCTURED MATERIALS, 7th, March 19-22, 2017, Brotas, SP. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/29160. Acesso em: 30 Dec 2025.
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