Corrosion behaviour of an Mg–Y–RE alloy used in biomedical applications studied by electrochemical techniques

Quach, N. C.; Uggowitzer, Peter J.; Schmutz, Patrik

doi:10.1016/j.crci.2008.06.007

Cited by 70 publications

(35 citation statements)

References 28 publications

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“…the charge transfer reaching a dynamic equilibrium, the corrosion rates and R polar at all the dynamic conditions were approximately similar. An important comment related to data interpretation in the case of uniform and localized corrosion occurring simultaneously and in parallel is that the impedance modulus of the two processes [59]. It is a balanced consequence between the thickening corrosion product layer on the uniform corrosion regions and the removal of corrosion products on the localized corrosion regions, which in turn decelerates and accelerates corrosion, respectively [27].…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2016

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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.

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Section: Resultsmentioning

confidence: 99%

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

et al. 2016

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“…More recently, Witte et al [8][9][10][11] investigated the in vivo degradation and corrosion properties of LAE442 and WE43. The implanted rods completely depredated in 18 weeks and implants were harvested at 6 and 18 weeks.…”

Section: Introductionmentioning

confidence: 98%

Preparation and properties of high purity Mg–Y biomaterials

et al. 2010

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An effective zone solidification method has been found to prepare high purity Mg-Y biomaterials. The corrosion and mechanical properties of the purified middle region are improved remarkably compared with common casting method. The average gain size and secondary dendrite space decrease from the top layer to the bottom layer of the ingot. The oxides, defects and precipitates are mainly enriched in the top layer of the ingot under the impulsion of high thermal gradient. These results are in agreement with that simulated by finite elemental method using FLOW-3D software. It is confirmed that the mode of scallop symmetric solidification attributes to the purifying process. This zone solidification method not only contributes to high purity Mg-based biomaterials, but also provides a new approach to prepare high performance Mg alloys.

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“…However, as biodegradable bone fixation materials, too quick degradation limits their clinical application in the body [1][2][3]. After the implant materials are implanted into the body, their biological properties depend on the interaction of their surface with human tissue and body fluid.…”

Section: Introductionmentioning

confidence: 99%

The enhanced corrosion resistance of UMAO coatings on Mg by silane treatment

Liu

et al. 2014

Progress in Natural Science: Materials International

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The surface silanization was carried out on ultrasonic micro-arc oxidation (UMAO) coatings on pure magnesium using KH550 as silane coupling agent (SCA). The surface morphology, chemical bonds and corrosion resistance of the silane films were investigated by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR) and electrochemical workstation, respectively. The results showed that hybrid coatings were successfully prepared on pure magnesium by UMAO-NaOH (1 mol/L, 2 mol/L, 3 mol/L)-SCA processing. The organic films with Si-O-Mg bonds are helpful for the reduction of the pores in UMAO coatings. The pores decreased with increasing NaOH concentration. Compared with single UMAO treatment, the corrosion potentials (E corr ) of magnesium plates with UMAO-NaOH (1 mol/L, 2 mol/L, 3 mol/L)-SCA treatment increased by 29 mV, 53 mV and 75 mV, respectively, meanwhile the corrosion current density (I corr ) reduced one to two orders of magnitude. It indicated that the corrosion resistance of the coatings was improved by silane treatment.

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Corrosion behaviour of an Mg–Y–RE alloy used in biomedical applications studied by electrochemical techniques

Cited by 70 publications

References 28 publications

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

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

Preparation and properties of high purity Mg–Y biomaterials

The enhanced corrosion resistance of UMAO coatings on Mg by silane treatment

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