Mehdi Afshari Abolkarlou
TiMn2 type alloys are considered as promising candidates for hydrogen storage materials. In this paper structural, morphological and magnetic properties of TiMn2 type alloy, before and after hydrogenation, were experimentally studied. The TiMn2 type alloy was hydrogenated under 50 bar hydrogen gas pressure. Structural and morphological properties of samples were investigated using X-Ray Diffraction (XRD) analysis and Field Emission Scanning Electron Microscope (FESEM) images. X-ray diffraction spectra showed the as-prepared and hydrogenated samples were both characterized as laves phases C14 with a hexagonal crystal structure (space group P63/mmc). The FESEM images illustrated the average grain size decreased, and sample surface was rather uniform after hydrogenation. Magnetic behavior of samples was checked using a Vibrating Sample Magnetometer (VSM) and depicted the samples are paramagnetism. The results obtained from Honda-Arrott plots indicated the magnetic susceptibility increases from 4.70*10-6 emu/g.Oe for as-prepared to 6.84*10-6 emu/g.Oe for hydrogenated sample.
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