Synthesis and Characterization of Mg-In alloys (17.47% at. and 38.84% at.) Prepared by mechanical alloying (original) (raw)

We synthesized two Mg-In alloys, namely, Mg 50% In (17.47% at. In) and Mg 75% In (38.84% at. In) by subjecting high purity Mg and In powders to mechanical alloying. The synthesis was followed in each case by X-ray diffraction (XRD), which allowed for a series of Mg-In metastable phases occurring during alloying to be identified. The invariability of the diffraction patterns made it possible for the grinding time to be set at 10 hours, phases In 0.144 Mg 1.856 and In 0.212 Mg 1.788 and InMg and InMg 3 having the greater presence in both the Mg 17.47% at. In and Mg 38.84% at. In alloys, respectively. Samples thermally annealed at 300 and 400oC were studied by differential scanning calorimetry (DSC) and electrical resistivity (Dr), the DSC measurements showing a series of phases according to what is established in the phase diagram of the Mg-In system. A kinetic analysis of the first reactions generated in both alloys after annealing at 300oC evinces that they occur by indium diffusion...

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