Investigations on the Degradation Behavior of Processed FeMnSi-xCu Shape Memory Alloys

• DOI: 10.3390/nano14040330
• Publication Date: 2024-02-08T08:36:17Z
• Authors: Ana-Maria Roman; Ramona Cimpoeșu; Bogdan Pricop; Marius Mihai Cazacu; Georgeta Zegan; Bogdan Istrate; Alexandru Cocean; Romeu Chelariu; Mihaela Moscu; Gheorghe Bădărău; Nicanor Cimpoeșu; Mircea Cătălin Iv...
• Keywords: Simulated body fluid; Immersion; Energy-dispersive X-ray spectroscopy; Biomaterial

A new functional Fe-30Mn-5Si-xCu (x = 1.5 and 2 wt%) biomaterial was obtained from the levitation induction melting process evaluated as a biodegradable material. The degradation characteristics were assessed in vitro using immersion tests simulated body fluid (SBF) at 37 ± 1 °C, evaluating mass loss, pH variation that occurred solution, open circuit potential (OCP), linear cyclic potentiometry (LP CP), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) nano-FTIR. To obtain plates samples, cast materials thermo-mechanically processed by hot rolling. Dynamic mechanical analysis (DMA) employed to evaluate thermal properties of smart Atomic force (AFM) used show nanometric microstructural changes during rolling DMA solicitations. type corrosion identified generalized corrosion, over first 3–5 days, an increase observed, caused compounds formed metal–solution interface. mainly oxides passed into liquid. rate (DR) function sample surface area duration. dynamic behavior dimensions after 14 days immersion. nanocompounds found on atmospheric SBF investigated with Neaspec system nano-FTIR technique.