Surface chemistry of bulk nanocrystalline pure iron and electrochemistry study in gas-flow physiological saline

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
F L Nie, Y F Zheng

Abstract

Conventional microcrystalline pure iron (MC-Fe) becomes a new candidate as biodegradable metals, which has the insufficient physical feature and inferior biodegradation behavior. Novel bulk nanocrystalline pure iron (NC-Fe) was fabricated via equal channel angular pressing technique in the present work to overcome these problems. The contact angle test with water and glycerol droplets shows a smaller angle (though >90°) of NC-Fe than that of MC-Fe, which implies a lower surface energy of NC-Fe. The surface roughness of NC-Fe increased greatly than that of MC-Fe. A further comparative study of corrosion and electrochemistry performance between NC-Fe and its original MC-Fe was investigated in physiological saline with different dissolved oxygen concentration, aiming to in vitro simulate the corrosion process of coronary stent occurred in physiological environment. The electrochemical impedance spectra analysis and anodic polarization measurements indicated that the NC-Fe exhibited higher corrosion resistance than that of the MC-Fe; meanwhile obvious enhanced corrosion resistance with the decrement of dissolved oxygen concentration was observed. Related equivalent circuit model and surface reconstruction process were further discu...Continue Reading

References

Jul 25, 2000·Circulation·A Colombo, E Karvouni
Jun 13, 2006·Biomaterials·Matthias PeusterChristian von Schnakenburg
Dec 26, 2006·Biomaterials·Gopinath ManiC Mauli Agrawal
Jul 13, 2007·Biomaterials·Laura SaldañaNuria Vilaboa
Dec 19, 2007·Journal of Interventional Cardiology·Ron WaksmanFermin O Tio
May 7, 2008·Biomedical Materials·Taik Nam KimB B Panigrahi
Oct 10, 2009·Acta Biomaterialia·H HermawanD Mantovani

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Citations

Jul 31, 2013·Journal of Biomedical Materials Research. Part a·J ChengY F Zheng
Aug 3, 2013·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·F L NieJ T Wang
Jan 14, 2017·Scientific Reports·W T HuoY S Zhang
Oct 24, 2017·Materials·Till JurgeleitChristiane Zamponi
Nov 20, 2021·ACS Biomaterials Science & Engineering·Marjan BahraminasabMohammad Sadegh Nourbakhsh

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