Enhancing Mechanical and Biocorrosion Response of a MgZnCa Bulk Metallic Glass through Variation in Spark Plasma Sintering Time

Development of metallic glasses is hindered by the difficulties in manufacturing bulk parts large enough for practical applications. Spark plasma sintering (SPS) has emerged as an effective consolidation technique formation (BMGs) from melt-spun ribbons. In this study, Mg65Zn30Ca5 ribbons were sintered at prolonged times (15 min to 180 min) via SPS under a pressure 90 MPa and temperature 150 °C (which below crystallization temperature), provide insight into influence time on consolidation, structural, biodegradation behavior Mg-BMGs. Scanning Electron Microscopy was used characterize microstructure surface, while presence amorphous phase characterized using X-ray diffraction Backscatter Diffraction. Pellets 10 mm diameter height with near-net structure synthesized min, resulting densification high 98.2% minimal crystallization. Sintering extended durations above achieved higher resulted significant amount local partial devitrification. Mechanical properties compression microhardness testing. Compression results show that increased led better structural integrity mechanical properties. Notably, SPS150_90 displayed ultimate compressive strength (220 MPa) matches cortical bone (205 MPa). Corrosion potentiodynamic polarization Phosphate Buffered Solution (PBS). The suggest samples have significantly corrosion resistance compared crystalline form. Overall, observed good balance between (10× as-cast alloy)