| Authors: | Wang, J.; Jang, Y.; Wan, G. J.; Giridharan, V.; Song, G. L.; Xu, Z. G.; Koo, Y.; Qi, P. K.; Sankar, J.; Huang, N.; Yun, Y. H. |
| Title: | Flow-induced corrosion of absorbable magnesium alloy: In-situ and real-time electrochemical study |
| Type: | Journal Article |
| Publisher: | Corrosion Science |
| Year: | 2016 |
| Volume: | 104 |
| Issue: | |
| Start Page: | 277 |
| End Page: | 289 |
| DOI: | 10.1016/j.corsci.2015.12.020 |
| WEB-link: | http://ac.els-cdn.com/S0010938X15301980/1-s2.0-S0010938X15301980-main.pdf?_tid=7c116896-0db5-11e6-9c74-00000aab0f02&acdnat=1461898560_5782cb8aae569feb801f94f4aedb8fa2 |
| Abstract: | An in-situ and real-time electrochemical study in a vascular bioreactor was designed to analyze corrosion mechanism of magnesium alloy (MgZnCa) under mimetic hydrodynamic conditions. Effect of hydrodynamics on corrosion kinetics, types, rates and products was analyzed. Flow-induced shear stress (FISS) accelerated mass and electron transfer, leading to an increase in uniform and localized corrosions. FISS increased the thickness of uniform corrosion layer, but filiform corrosion decreased this layer resistance at high FISS conditions. FISS also increased the removal rate of localized corrosion products. Impedance estimated and linear polarization-measured polarization resistances provided a consistent correlation to corrosion rate calculated by computed tomography. (C) 2015 Elsevier Ltd. All rights reserved. |
| Keywords: | magnesium, flow induced corrosion, monitoring, vascular bioreactor, eis, simulated body-fluid, we43 mg alloy, impedance spectroscopy, localized corrosion, anodic-dissolution, pure magnesium, nacl solution, behavior, chloride, stents |
