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Localized corrosion of binary Mg-Ca alloy in 0.9 wt% sodium chloride solution
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2016 (English)In: Acta Metallurgica Sinica (English Letters), ISSN 1006-7191, E-ISSN 2194-1289, Vol. 29, no 1, 46-57 p.Article in journal (Refereed) PublishedText
Abstract [en]

To further understand the localized corrosion of magnesium alloy, various in situ electrochemical techniques and ex situ electron microprobe analysis and SEM were used to monitor the corrosion process of Mg-1.0Ca alloy in 0.9 wt% sodium chloride solution. The results indicated that the localized corrosion was accompanied by the formation and thickening of a corrosion product film on the Mg-1.0Ca alloy. A localized corrosion of the alloy initiated selectively on the eutectic micro-constituent zones, then enhanced with the exposure, developed in depth with ring-shaped corrosion products accumulated around and finally formed a volcanic-like pitting. Based on the measurements, an electrochemical corrosion model was proposed accordingly to describe the formation mechanism of the volcanic-like pitting on the alloy in 0.9 wt% sodium chloride solution.

Place, publisher, year, edition, pages
Chinese Society for Metals , 2016. Vol. 29, no 1, 46-57 p.
Keyword [en]
Corrosion behavior, EIS, Magnesium alloy, Scanning reference electrode technique, Aluminum corrosion, Calcium, Calcium alloys, Corrosion, Corrosive effects, Electron probe microanalysis, Magnesium, Magnesium alloys, Microanalysis, Pitting, Sodium, Sodium chloride, Volcanoes, Corrosion product film, Corrosion products, Electrochemical techniques, Formation mechanism, Localized corrosion, Sodium chloride solution, Electrochemical corrosion
National Category
Corrosion Engineering
URN: urn:nbn:se:kth:diva-188245DOI: 10.1007/s40195-015-0361-2ISI: 000374615600007ScopusID: 2-s2.0-84959864410OAI: diva2:935877

QC 20160613

Available from: 2016-06-13 Created: 2016-06-09 Last updated: 2016-06-15Bibliographically approved

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Pan, Jinshan
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Surface and Corrosion Science
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