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Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
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  • Soft material characterization such as graphene using a low kV Cs-corrected TEM

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Influence of alloyed Al on the microstructure and corrosion properties of extruded Mg-8Sn-1Zn alloys

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Title
Influence of alloyed Al on the microstructure and corrosion properties of extruded Mg-8Sn-1Zn alloys
Author
Kim, Hyeon JuKim, BeomcheolBaek, Soo-MinSohn, So-DamShin, Hyung-JoonJeong, Hu YoungYim, Chang DongYou, Bong SunHa, Heon-YoungPark, Sung Soo
Keywords
A. Alloy; A. Magnesium; C. Pitting corrosion
Issue Date
201506
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CORROSION SCIENCE, v.95, no., pp.133 - 142
Abstract
Microstructure and corrosion properties of extruded Mg-8Sn-1Zn alloys with varying Al contents were investigated. Microstructures of the extruded alloys mainly consisted of α-Mg grains and Mg2Sn particles in common. Addition of Al to the ternary alloy resulted in the formation of different types of Al-Fe-based intermetallic particles depending on Al contents. In 0.6M NaCl solution, the extruded alloys with 1-3wt% Al showed over 30 times higher corrosion rates than those containing less than 0.3wt% Al; this discrepancy was attributed to the presence of Al5Fe2 particles acting as strong cathodic sites for H2 evolution during corrosion. ⓒ 2015 Elsevier Ltd
URI
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DOI
http://dx.doi.org/10.1016/j.corsci.2015.03.007
ISSN
0010-938X
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MSE_Journal Papers
UCRF_Journal Papers

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