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Electrochemical Corrosion Behavior of Extruded Dilute Mg-2Sn-1Al-1Zn Alloy in Simulated Body Fluid |
ZHANG Yao1, GUO Chen1, LIU Yanhui1, HAO Meijuan1, CHENG Shiming1, CHENG Weili1,2() |
1 School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China 2 Shanxi Key Laboratory of Advanced Magnesium-Based Materials, Taiyuan University of Technology, Taiyuan 030024, China |
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Abstract The electrochemical behavior of the extruded dilute Mg-2Sn-1Al-1Zn alloy was examined in simulated body fluid (SBF) by means of electrochemical workstation CS350. While stable open circuit potential, polarization curve and the impedance data after immersion for different time were measured. Results indicate that the stable open circuit potential value was -1.57 VSCE, the polarization corrosion rate was 8.98 mm/a and the corrosion resistance was 1011.21 Ω·cm2. Impedance tests at different time of immersion in simulated body fluids showed that the corrosion resistance first increased and then decreased. Due to the corrosion product layer on the surface of the soaked alloy is the densest after 2 h of immersion, the value of corrosion resistance reached a maximum of 2151.62 Ω·cm2.
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Received: 28 April 2019
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Fund: Shanxi Scholarship Council of China(2014-023);Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(2014017);Natural Science Foundation of Shanxi(201801D121088) |
Corresponding Authors:
CHENG Weili
E-mail: chengweili7@126.com
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