The Effect of the Third Element on Corrosion Behavior and Phase Structure of Fe35Mn Alloy Fabricated by Spark Plasma Sintering (SPS)
Subject Areas :Nahid Hasanzadeh Nemati 1 , Mahdis Parsafar 2
1 - Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 - Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Keywords: Microstructure, Spark Plasma Sintering, Degradable Alloy, Electrochemical Measurements,
Abstract :
In recent years, investigations on accelerating of corrosion of Fe-Mn based alloys as biodegradableones in orthopedic applications are aggrandized. Alloy composition is one of the effective factors inthis case. This study is focused on the effect of the third element on the corrosion behavior ofFe35Mn alloy. For this purpose, four alloys including Fe35Mn, Fe35Mn2Ti, Fe35Mn2Ta, andFe35Mn2Zr were produced by mechanical alloying. Then cylindrical samples of each alloy werefabricated by spark plasma sintering method (SPS) with pressing in 50MPa and sintering at 1000°Cfor 20 minutes simultaneously. All the specimens were evaluated by x-ray diffraction (XRD), lightmicroscope, and potentiodynamic polarization test to compare the effect of the third element as Ta,Ti, and Zr. Results revealed that adding the third element increases the corrosion rate. It is foundthat the most effective element was Ta. Also, the weight changes of specimens after immersion inSBF at different times for predicting their probable behavior in the human body were measured.The foundlings could be utilized in medical applications.