Journal ArticleDOI
Evolution of hydrogen at dissolving magnesium surfaces
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TLDR
In this paper, a combined experimental and thermodynamic analysis suggests that the ability of magnesium to support the cathodic reaction is enhanced during dissolution as the result of an increase in the exchange current density for the hydrogen evolution reaction, which can also explain high rates of hydrogen evolution in aluminium pits.About:
This article is published in Corrosion Science.The article was published on 2013-05-01. It has received 331 citations till now. The article focuses on the topics: Hydrogen & Magnesium.read more
Citations
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Physical Characterization of Cathodically-Activated Corrosion Filaments on Magnesium Alloy AZ31B
Zachary P. Cano,Mohsen Danaie,Joseph R. Kish,Joseph R. McDermid,Gianluigi A. Botton,Geraint Williams +5 more
TL;DR: In this paper, the filiform-like corrosion behavior of Mg alloy AZ31B was characterized using analytical microanalysis, which indicated the presence of through-thickness cracks within the corrosion filaments, Al-Mn particles (identified as Al11Mn4 with energy-dispersive x-ray spectroscopy (EDS) quantification) in the preexisting films and filament corrosion products, and a significant enrichment of Zn at the corrosion filament/metal interface after aging of the filament.
Journal ArticleDOI
Corrosion behavior of AZ31 magnesium alloy in the chloride solution containing ammonium nitrate
TL;DR: In this paper, the authors investigated the corrosion behavior of AZ31 magnesium alloy in NH4NO3-containing chloride solution by immersion tests, hydrogen evolution collection, electrochemical measurements, and microscopic observation.
Journal ArticleDOI
Unexpected cathodic role of Mg41Sm5 phase in mitigating localized corrosion of extruded Mg-Sm-Zn-Zr alloy in NaCl solution
TL;DR: In this paper, the effect of Mg41Sm5 second-phase on corrosion of as-cast and extruded Mg-Sm-Zn-Zr alloys in NaCl solution was investigated.
Journal ArticleDOI
Revisiting the Electrochemical Impedance Spectroscopy of Magnesium with Online Inductively Coupled Plasma Atomic Emission Spectroscopy
Viacheslav Shkirskiy,A.D. King,Oumaïma Gharbi,Polina Volovitch,John R. Scully,Kevin Ogle,Nick Birbilis +6 more
TL;DR: This work couple electrochemical impedance spectroscopy (EIS) with online atomic emission spectroelectrochemistry (AESEC) to simultaneously measure Mg-ion concentration and electro chemical impedance spectra during Mg corrosion, in real time, and reveals that Mg dissolution occurs via Mg(2+) , and that corrosion is activated, as measured by AC frequencies less than approximately 1 Hz approaching DC conditions.
Journal ArticleDOI
Applications of scanning electrochemical microscopy (SECM) for local characterization of AZ31 surface during corrosion in a buffered media
TL;DR: Different modes of scanning electrochemical mapping (SECM) such as surface generation/tip collection (SG/TC), amperometry, AC-SECM and potentiometry were employed to characterize the active/passive domains, hydrogen gas (H2) evolution and local pH on a corroding surface of AZ31 in simulated biological fluid (SBF) as discussed by the authors.
References
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Book
Electrochemical Methods: Fundamentals and Applications
Allen J. Bard,Larry R. Faulkner +1 more
TL;DR: In this paper, the authors present a comprehensive overview of electrode processes and their application in the field of chemical simulation, including potential sweep and potential sweep methods, coupled homogeneous chemical reactions, double-layer structure and adsorption.
Journal ArticleDOI
The anodic dissolution of magnesium in chloride and sulphate solutions
TL;DR: In this article, the electrochemical behavior of magnesium was studied in representative chloride and sulphate solutions including NaCl, Na2SO4, NaOH and their mixed solutions, HCl, and H2SO 4: (1) by measuring electrochemical polarisation curves, (2) by using electrochemical impedance spectroscopy (EIS), and (3) by simultaneous measurement of hydrogen gas evolution and measurement of magnesium dissolution rates using ICPEAS.
Journal ArticleDOI
Assessing the corrosion of biodegradable magnesium implants: a critical review of current methodologies and their limitations.
TL;DR: This paper aims to elucidate the main benefits and limitations for each of the major in vitro methodologies used in examining the biodegradation behaviour of Mg and its alloys.
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