2018
DOI: 10.1149/2.0291811jes
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Multi-Scale Monitoring the First Stages of Electrochemical Behavior of AZ31B Magnesium Alloy in Simulated Body Fluid

Abstract: This work applies electrochemical noise technique (EN) and scanning electrochemical microscopy (SECM) to investigate the initial stages of degradation of AZ31B magnesium alloy in simulated body fluid (SBF). The fluctuations in potential and current, caused by the alloy's spontaneous degradation, were analyzed in both time and frequency domains to determine the type of attack and the fractal nature of the degradation. Substrate-generation/tip-collection mode SECM mapped the hydrogen evolution activity at the Mg… Show more

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Cited by 24 publications
(20 citation statements)
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“…Cathodically active intermetallic Al-Mn particles located within the grains of α-Mg matrix are the main second phase constituents of AZ31B microstructure, such as Al 8 Mn 5 , ε-AlMn, Al 11 Mn 4 and β-Mn(Al) [21][22][23][24][25]. The corrosion mechanism directly depends on their distribution and the solution composition [26][27][28][29][30][31][32]. As test media in this work was selected Ringer's solution, which is an isotonic (physiological) aqueous solution of NaCl with additional compounds, as found in human body fluids (blood serum).…”
Section: Introductionmentioning
confidence: 99%
“…Cathodically active intermetallic Al-Mn particles located within the grains of α-Mg matrix are the main second phase constituents of AZ31B microstructure, such as Al 8 Mn 5 , ε-AlMn, Al 11 Mn 4 and β-Mn(Al) [21][22][23][24][25]. The corrosion mechanism directly depends on their distribution and the solution composition [26][27][28][29][30][31][32]. As test media in this work was selected Ringer's solution, which is an isotonic (physiological) aqueous solution of NaCl with additional compounds, as found in human body fluids (blood serum).…”
Section: Introductionmentioning
confidence: 99%
“…The values of β exponent in PSD graphs suggest that corrosion process of AA2219‐T42 alloy occurs as a persistent non‐stationary process, the dynamics of which is controlled by fractional Brownian motion (fBm), while on AA6061‐T6 alloy the corrosion process was dominated by stationary and weakly persistent features, with the contribution of fractional Gaussian noise (fGn). In terms of magnesium alloys, E. Mena‐Morcillo applied electrochemical noise technique to investigate the initial stages of degradation of AZ31B magnesium alloy in simulated body fluid [46] . The fluctuations in potential and current, caused by the alloy‘s spontaneous degradation, were analyzed in both time and frequency domains to determine the type of attack and the fractal nature of the degradation.…”
Section: Application Of Electrochemical Noise In Corrosion Researchmentioning
confidence: 99%
“…In terms of magnesium alloys, E. Mena-Morcillo applied electrochemical noise technique to investigate the initial stages of degradation of AZ31B magnesium alloy in simulated body fluid. [46] The fluctuations in potential and current, caused by the alloy's spontaneous degradation, were analyzed in both time and frequency domains to determine the type of attack and the fractal nature of the degradation. The studies allowed the description of the early degradation processes of AZ31B in simulated body fluid as a persistent stationary process, related to fractional Gaussian noise, which was characterized by the quasi-uniform corrosion of the alloy.…”
Section: Determine the Type Of Corrosionmentioning
confidence: 99%
“…The β exponent is a parameter correlated with the strength of persistence in a process [26]. In our previous studies, EN technique was carried out to characterise the first stages of corrosion in stationary seawater of copper [27], aluminium [28] and aluminium alloys [29], as well as the initial stages of AZ31B Mg alloy in simulated body fluid [30].…”
Section: Introductionmentioning
confidence: 99%