Abstract
Fe-based bulk amorphous alloys were prepared by spark plasma sintering (SPS) with different parameters. The thermal stability of Fe-based bulk amorphous alloys was characterized by differential scanning calorimetry (DSC) to determine the thermodynamic characteristic temperature, such as glass transition temperature (Tg) and crystallization temperature (Tx). X-ray diffraction (XRD), Archimedes drainage method, universal material testing machine, Electrochemical workstation and scanning electron microscope (SEM) were utilized to analyze the phase composition, relative density, compressive strength, corrosion performance, and fracture morphology and corrosion morphology of Fe based bulk amorphous alloys. This experiment show that Fe-based amorphous powder can be made into Fe-based bulk amorphous alloy with the size of φ12 × 9 mm by SPS technology. Meanwhile, the sample prepared with the parameters of sintering temperature of 560 ℃, sintering pressure of 550 MPa and the holding time of 1 min basically maintains the amorphous structure, and it has good compressive strength of 678 MPa, Microhardness of 1351.2 HV, density of 94.4 %, and perfect corrosion resistance.
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