Development of biocompatible Mg-based functional materials from polymer precoated Mg powders by electric field assisted sintering technique (FAST)

Tez Türü: Doktora

Tezin Yürütüldüğü Kurum: Ege Üniversitesi, Türkiye

Tez Danışmanı: Prof. Dr. Rasim İpek

Tezin Onay Tarihi: 2024

Tezin Dili: İngilizce

Desteklendiği Program: Diğer

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 (FAST) Technique. Active metals' surfaces are prone to atmospheric contamination, making the preservation of Mg powder surfaces critical for sintering processes. This study investigates the protective efficacy of PVA coating on Mg powder surfaces through experimentally. 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 30minutes with 10% PVA content achieves 99% density and 195 MPa compression strength. This finding indicates that PVA coating enhances mechanical properties during the sintering process by promoting metal-metal contact. Two-layer (functional) material was produced, and microstructural examination, SEM and EDS analyzes were carried out. In vitro corrosion tests were performed on the samples.