Experimental investigation of sinterability of PVA-coated Magnesium powders via mechanical milling using Electric Field-Assisted Sintering Technique

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Yahşi Y., Yusan S., Akgol S., Ipek R.

KOVOVE MATERIALY, cilt.62, sa.4, ss.211-222, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 62 Sayı: 4
  • Basım Tarihi: 2024
  • Doi Numarası: 10.31577/km.2024.4.211
  • Dergi Adı: KOVOVE MATERIALY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Central & Eastern European Academic Source (CEEAS), Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.211-222
  • Anahtar Kelimeler: mechanical milling (MM), PVA (Polyvinyl alcohol) coating, magnesium, Elec- tric Field-Assisted Sintering Technique (FAST)
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

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.