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http://dx.doi.org/10.7777/jkfs.2014.34.6.187

The Effect of Ce Addition on Corrosion Behavior of Permanent Mold Casting Mg-4Al-2Sn-1Ca alloy  

Park, Kyung Chul (Defence Agency for Technology and Quality)
Kim, Byeong Ho (Defence Agency for Technology and Quality)
Jung, Jae Woong (Defence Agency for Technology and Quality)
Cho, Dae Hyun (Department of Material Science and Engineering, Pusan National University)
Park, Ik Min (Department of Material Science and Engineering, Pusan National University)
Publication Information
Journal of Korea Foundry Society / v.34, no.6, 2014 , pp. 187-193 More about this Journal
Abstract
In the present work, the effect of adding Ce on the corrosion behavior of Mg-4Al-2Sn-1Ca alloy was investigated. The studied alloys were fabricated by gravity casting method and a potentiodynamic polarization, A.C. impedance and hydrogen evolution tests were carried out in a 3.5% NaCl solution with pH 7.2 at room temperature to measure the corrosion properties of Mg-4Al-2Sn-1Ca-xCe alloys. The microstructure of the Mg-4Al-2Sn-1Ca alloy was composed of ${\alpha}$-Mg, Mg17Al12, Mg2Sn and CaMgSn phase. Also, a $Al_{11}Ce_3$ phase was newly formed by the addition of Ce. With an increase of the Ce contents, the microstructure became refined and the corrosion resistance improved.
Keywords
Permanent mold casting; Mg-4Al-2Sn-1Ca-xCe alloy; Corrosion properties;
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Times Cited By KSCI : 2  (Citation Analysis)
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