Abstract
In this study, the sinterability of mechanically milled (MM) and Polyvinyl Alcohol (PVA) coated magnesium (Mg) powders is experimentally investigated using the Electric Field-Assisted Sintering Technique (FAST).
Active metals' surfaces are prone to atmospheric contamination, making preserving Mg powder surfaces critical for sintering processes. This study experimentally investigates the protective effectiveness of PVA coating on the surfaces of Mg powder. Particles derived from the addition of PVA to Mg powders during the MM process undergo scrutiny through Fourier-Transform-Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Energy Dispersive X-ray Spectroscopy (EDS) analysis, Scanning Electron Microscopy (SEM) imaging methods.
It has been observed that sintered samples of PVA-coated particles exhibit higher density and compression strength compared to non-coated samples. A sample milled for 30 min with 10 % PVA content achieves 99 % density and 195 MPa compression strength. This finding indicates that PVA coating enhances mechanical properties during sintering by promoting metal-metal contact.

Key words
mechanical milling (MM), PVA (Polyvinyl alcohol) coating, magnesium, Electric Field-Assisted Sintering Technique (FAST)

Full text (1205 KB)