Synthesis of TiFe Compound from Ball Milled TiH2 and Fe Powders Mixtures

Railson Bolsoni Falcão; Edgar Djalma Campos Carneiro Dammann; Cláudio José da Rocha; Rodrigo Uchida Ichikawa; Michelangelo Durazzo; Luís Gallego Martinez; Ricardo Mendes Leal Neto

doi:10.4028/www.scientific.net/MSF.802.61

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HomeMaterials Science ForumMaterials Science Forum Vol. 802Synthesis of TiFe Compound from Ball Milled TiH2...

Synthesis of TiFe Compound from Ball Milled TiH₂ and Fe Powders Mixtures

Abstract:

TiFe compound was produced by high-energy ball milling of TiH₂ and Fe powders, followed by heating under vacuum. TiH₂ was used instead of Ti in order to avoid the strong particles adhesion to grinding balls and vial walls. Mixtures of TiH₂ and Fe powders were dry-milled in a planetary mill for times ranging from 5 to 40 hours. The amount of sample, number and diameter of the balls were kept constant in all experiments. After milling, samples were heated under dynamic high-vacuum for the synthesis reaction. As-milled and heat-treated materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential thermal analysis (DTA). The mean crystallite sizes and microstrains were determined by XRD line profile analysis using the Warren-Averbach method. As-milled materials presented only Fe and TiH₂ phases. Nanostructured TiFe compound was formed after heat treatment. TiH₂ was effective for providing low adherence of the powders during milling.

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Periodical:

Materials Science Forum (Volume 802)

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61-65

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.802.61

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Online since:

December 2014

Authors:

Railson Bolsoni Falcão*, Edgar Djalma Campos Carneiro Dammann, Cláudio José da Rocha, Rodrigo Uchida Ichikawa, Michelangelo Durazzo, Luís Gallego Martinez, Ricardo Mendes Leal Neto

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Ball Milling, Hydrogen Storage Materials, Intermetallic

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