Influence of pH and chloride ion concentration on the corrosion of Mg alloy ZE41

Zhao, Ming-Chun; Liu, Ming; Song, Guang‐Ling; Atrens, Andrej

doi:10.1016/j.corsci.2008.08.023

Cited by 395 publications

(154 citation statements)

References 64 publications

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“…Hence, the corrosion rate was increased. This corrosion behavior is consistent with the current understanding that the corrosion behavior of magnesium alloys is governed by a partially protective surface film with the corrosion reaction occurring predominantly at the breaks or imperfections of the partially protective film [21]. Fig.…”

Section: Resultssupporting

confidence: 78%

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Effect of chloride ion concentration, spraying time and pH values on corrosion behavior of friction stir welded AZ61A magnesium alloy welds in salt fog environments

Dhanapal¹,

Boopathy²,

Balasubramanian³

2013

uujms

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The present research devoted to the investigation of the corrosion behavior of AZ61A FSW welds in accelerated conditions, including the influence of salt fog environmental parameters such as chloride ion concentration, pH, and duration of exposure. Significant numbers of tests were carried out that make possible to create the regression model (empirical equation) of influence of selected environmental parameters on corrosion rate. The corrosion products were analyzed by SEM and XRD analysis. This research demonstrates the effect of chloride ion concentrations, spraying time and pH values on corrosion rate, and it show the corrosion activity decelerates with the increasing pH value and spraying time respectively. It was found that the increase in chloride ion concentration accelerates the corrosion of AZ61A weldments. The corrosion morphology was predominantly influenced by the distribution of β-phase (e.g. Mg17Al12 intermetallic).

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Section: Resultssupporting

confidence: 78%

“…The influence of pH and/or chloride ion concentration on the corrosion of pure magnesium and magnesium alloys has been studied extensively for understanding of environmental factors controlling corrosion [5]. The pH of tests solution has a considerable effect on the corrosion rate of Mg.…”

Section: Introductionmentioning

confidence: 99%

Effect of chloride ion concentration, spraying time and pH values on corrosion behavior of friction stir welded AZ61A magnesium alloy welds in salt fog environments

Dhanapal¹,

Boopathy²,

Balasubramanian³

2013

uujms

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“…Chloride ions are known to increase corrosion rates of Mg alloys by destabilising partly-protective films in simpler solutions such as 3.5% NaCl [54,65], and this is commonly expected to be the case in more complex solution such as SBFs. The presence of Cl − destabilises the partially protective Mg(OH) 2 corrosion layer to form MgCl 2 , which is water soluble and therefore does not protect the underlying Mg [66].…”

Section: Chloride Ions (Cl − )mentioning

confidence: 99%

Building towards a standardised approach to biocorrosion studies: a review of factors influencing Mg corrosion in vitro pertinent to in vivo corrosion

2017

Self Cite

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The factors that influence magnesium (Mg) corrosion in vitro are systematically evaluated from a review of the relevant literature. We analysed the influence of the following factors on Mg biocorrosion in vitro: (i) inorganic ions, including both anions and cations, (ii) organic components such as proteins, amino acids and vitamins, and (iii) experimental parameters such as temperature, pH, buffer system and flow rate. Considerations and recommendations towards a standardised approach to in vitro biocorrosion testing are given. Several potential simulated body fluids are recommended. Implementing a standardised approach to experimental parameters has the potential to significantly reduce variability between in vitro biocorrosion tests, and to help build towards a methodology that accurately and consistently mimics in vivo corrosion. However, there are also knowledge gaps with regard to how best to characterise the in vivo environment and corrosion mechanism. The assumption that blood plasma is the correct bodily fluid upon which to base in vitro methodologies is examined, and factors that influence the corrosion mechanism in vivo, such as specimen encapsulation, bear consideration for further studies.

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“…Open circuit potential (OCP) variation can provide some information about the initiation and propogation of corrosion [40]. Relatively stable OCP values imply an electrochemical steady state on the electrode surface.…”

Section: Open Circuit Potentialmentioning

confidence: 99%

Corrosion and Discharge Behaviors of Mg-Al-Zn and Mg-Al-Zn-In Alloys as Anode Materials

Wan

Sun

et al. 2016

Metals

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Abstract:The Mg-6%Al-3%Zn and Mg-6%Al-3%Zn-(1%, 1.5%, 2%)In alloys were prepared by melting and casting. Their microstructures were investigated via metallographic and energy-dispersive X-ray spectroscopy (EDS) analysis. Moreover, hydrogen evolution and electrochemical tests were carried out in 3.5 wt% NaCl solution aiming at identifying their corrosion mechanisms and discharge behaviors. The results suggested that indium exerts an improvement on both the corrosion rate and the discharge activity of Mg-Al-Zn alloy via the effects of grain refining, β-Mg 17 Al 12 precipitation, dissolving-reprecipitation, and self-peeling. The Mg-6%Al-3%Zn-1.5%In alloy with the highest corrosion rate at free corrosion potential did not perform desirable discharge activity indicating that the barrier effect caused by the β-Mg 17 Al 12 phase would have been enhanced under the conditions of anodic polarization. The Mg-6%Al-3%Zn-1.0%In alloy with a relative low corrosion rate and a high discharge activity is a promising anode material for both cathodic protection and chemical power source applications.

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Influence of pH and chloride ion concentration on the corrosion of Mg alloy ZE41

Cited by 395 publications

References 64 publications

Effect of chloride ion concentration, spraying time and pH values on corrosion behavior of friction stir welded AZ61A magnesium alloy welds in salt fog environments

Effect of chloride ion concentration, spraying time and pH values on corrosion behavior of friction stir welded AZ61A magnesium alloy welds in salt fog environments

Building towards a standardised approach to biocorrosion studies: a review of factors influencing Mg corrosion in vitro pertinent to in vivo corrosion

Corrosion and Discharge Behaviors of Mg-Al-Zn and Mg-Al-Zn-In Alloys as Anode Materials

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