Microstructure and corrosion behavior of die-cast AM60B magnesium alloys in a complex salt solution. A slow positron beam study

Journal Article · Sun Dec 15 00:00:00 EST 2013 · Corrosion Science

DOI:https://doi.org/10.1016/j.corsci.2013.12.007· OSTI ID:1121816

Liu, Y. F. ^[1]; Yang, W. ^[1]; Qin, Q. L. ^[1]; Wen, W. ^[2]; Zhai, T. ^[2]; Yu, B. ^[3]; Liu, D. Y. ^[3]; Luo, A. ^[4]; Song, GuangLing ^[5]

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1. Wuhan Univ. (China)
2. Univ. of Kentucky, Lexington, KY (United States)
3. Univ. of Alberta, Edmonton, AB (Canada)
4. General Motors Research and Development Center, Warren, MI (United States)
5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The microstructure and corrosion behavior of high pressure die-cast (HPDC) and super vacuum die-cast (SVDC) AM60B magnesium alloys were investigated in a complex salt solution using slow positron beam technique and potentiodynamic polarization tests. The experiments revealed that a CaCO₃ film was formed on the surface of the alloys and that the rate of CaCO₃ formation for the SVDC alloy with immersion time was slower than that of the HPDC alloy. The larger volume fraction of b-phase in the skin layer of the SVDC alloy than that of the HPDC alloy was responsible for the better corrosion resistance.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1121816
• Journal Information: Corrosion Science, Vol. 81; ISSN 0010-938X
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE