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Flow-induced corrosion of absorbable magnesium alloy: In-situ and real-time electrochemical study.

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.

SUBMITTER: Wang J

PROVIDER: S-EPMC5473620 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Flow-induced corrosion of absorbable magnesium alloy: In-situ and real-time electrochemical study.

Wang Juan J Jang Yongseok Y Wan Guojiang G Giridharan Venkataraman V Song Guang-Ling GL Xu Zhigang Z Koo Youngmi Y Qi Pengkai P Sankar Jagannathan J Huang Nan N Yun Yeoheung Y

Corrosion science 20151224

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 la ...[more]

PMID: 28626241

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