Microstructure, Shape Memory Effect, Chemical Composition and Corrosion Resistance Performance of Biodegradable FeMnSi-Al Alloy

• DOI: 10.3390/cryst13010109
• Publication Date: 2023-01-09T06:36:17Z
• Authors: Ana-Maria Roman; Ionelia Voiculescu; Ramona Cimpoeșu; Bogdan Istrate; Romeu Chelariu; Nicanor Cimpoeșu; Georgeta Zegan; Cătălin Panaghie; Nicoleta Monica L...; Mihai Axinte; Alice Mirela Murariu
• Keywords: Energy-dispersive X-ray spectroscopy

The medical applications of degradable iron-based biomaterials have been targeted by re-searchers due to their special properties that they present after alloying with various elements and different technological methods obtaining. Compared other biodegradable materials, alloys are designed especially for the low production costs, non-magnetism obtained Mn, shape memory effect (SME) following Si, which is necessary in it could replace nitinol successfully. Alloying new improve mechanical properties, degradation rate, transformation temperatures corresponding SME. This paper presents results from study FeMnSi-Al alloy as a material. X-ray diffraction (XRD) method was used identify phases formed experimental Fe-Mn-Si-Al alloy, SME studied differential scanning calorimetry (DSC). In vitro tests were performed immersing samples Ringer’s biological solution time intervals (1, 3, 7 days). chemical composition samples, well compounds resulting immersion tests, evaluated energy dispersive (EDS). Scanning electron microscopy (SEM) microstructural analysis highlighting surfaces subjected contact electrolyte solution. corrosion rate (CR, mm/yr.) calculated mass loss, sample surface area, (h) (at 37 °C). Samples electro-corrosion using electrochemical impedance spectroscopy (EIS) Tafel linear cyclic potentiometry.