A Comparative Study on Corrosion Behavior of Mg-Zn-Gd Alloys by Varying the Gd Content

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Abstract:

In this study, two Mg-Zn-Gd alloys (Mg-5Zn-5Gd and Mg-5Zn-3Gd) are fabricated using high purity raw materials and by a clean melting process and subjected to immersion testing. The results indicate an increase in corrosion rate for increase in Gd content and the results are correlated using SEM, XRD and EDS analyses. It is seen that RE addition provides a protective oxide coating over the sample surface thereby assisting the corrosion resistance.

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Materials Science Forum (Volumes 830-831)

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631-634

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September 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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[1] M.P. Staiger, A.M. Pietak , J. Huadmai, G. Dias, Magnesium and its alloys as orthopedic biomaterials: A review, Biomaterials 27 (9) (2006) 1728–1734.

DOI: 10.1016/j.biomaterials.2005.10.003

Google Scholar

[2] A. Srinivasan, C. Blawert, Y. Huang, C.L. Mendis, K.U. Kainer, N. Hort, Corrosion behavior of Mg-Gd-Zn based alloys in aqueous NaCl solution, Journal of Magnesium and Alloys 2 (2014) 245-256.

DOI: 10.1016/j.jma.2014.08.002

Google Scholar

[3] S. Cai, T. Lei, N. Li, F. Feng, Effects of Zn on microstructure, mechanical properties and corrosion behavior of Mg–Zn alloys, Materials Science and Engineering C 32 (2012) 2570–2577.

DOI: 10.1016/j.msec.2012.07.042

Google Scholar

[4] W. Ping, L. Dao-xin, L. Jian-ping, G. Yong-chun, Y. Zhong, Growth process and corrosion resistance of micro-arc oxidation coating on Mg-Zn-Gd magnesium alloys, Journal of Rare Earths 28 (5) (2010) 798-802.

DOI: 10.1016/s1002-0721(09)60204-0

Google Scholar

[5] B.L. Mordike, T. Ebert, Magnesium: Properties-application-potential, Materials Science and Engineering 30 (2) (2001) 37−45.

Google Scholar

[6] N. Birbilis, M.A. Easton, A.D. Sudholz, S.M. Zhu, M.A. Gibson, On the corrosion of binary magnesium-rare earth alloys, Corrosion Science 51 (2009) 683−689.

DOI: 10.1016/j.corsci.2008.12.012

Google Scholar

[7] J. Kubasek, D. Vojtech, Structural characteristics and corrosion behavior of biodegradable Mg-Zn, Mg-Zn-Gd alloys, Journal of Materials Science: Materials in Medicine 24 (2013) 1615-1626.

DOI: 10.1007/s10856-013-4916-3

Google Scholar