Partic. vol. 17 pp. 158-164 (December 2014)
doi: 10.1016/j.partic.2014.01.005

Characterization and modification of waste magnesium chip utilized as an Mg-rich intermetallic composite

Aysel Kantürk Figen , Sabriye Pişkin^*

sabriyepiskin@gmail.com

Abstract

In this study, the characterization and modification of waste magnesium chips (WMCs), which were produced by plastic molding in a gold manufacturing factory and are used as Mg-rich intermetallic composites in storing hydrogen, were discussed in detail. WMCs were analyzed using X-ray diffraction (XRD), X-ray fluorescence (XRF) spectroscopy, differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET) analysis to characterize the materials’ structural properties. Mechanical milling, organic treatment, and inorganic salt addition were carried out to modify the WMCs’ surface to prepare Mg-rich intermetallic composites for storing hydrogen. The modified samples were analyzed using high-pressure volumetric analyses to calculate their hydrogen storage capacity. The authors conclude that modified WMC was promising as an Mg-rich intermetallic composite that was suitable for use in hydrogen storage with a 4.59 wt% capacity at 320 °C under a hydrogen pressure of 60 bar.

Graphical abstract

Keywords

Waste magnesium chip; Characterization; Modification; Hydrogen storage; Intermetallic composite