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Founded in 1987， Bimonthly
Supervisor：Jiangxi University Of Science And Technology
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Jiangxi Nonferrous Metals Society
ISSN：1674-9669
CN：36-1311/TF
CODEN YJKYA9
Volume 9 Issue 2
Apr.  2018
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YANG Shaohua, ZHANG Dancheng, TIAN Yabin, YE Changmei, ZHAO Yujuan, LI Linshan. Corrosion of 5083 aluminum magnesium alloy in NaCl solution with different concentrations[J]. Nonferrous Metals Science and Engineering, 2018, 9(2): 1-5. DOI: 10.13264/j.cnki.ysjskx.2018.02.001
Citation: YANG Shaohua, ZHANG Dancheng, TIAN Yabin, YE Changmei, ZHAO Yujuan, LI Linshan. Corrosion of 5083 aluminum magnesium alloy in NaCl solution with different concentrations[J]. Nonferrous Metals Science and Engineering, 2018, 9(2): 1-5. DOI: 10.13264/j.cnki.ysjskx.2018.02.001
shu

Corrosion of 5083 aluminum magnesium alloy in NaCl solution with different concentrations

  • 1.

    School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

  • 2.

    Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100090, China

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  • Received Date: September 19, 2017
  • Published Date: April 29, 2018
    Graphical Abstract
    • Abstract
  • The corrosion behavior of 5083 aluminum magnesium alloy in NaCl solution at different concentrations was studied by polarization curve method and AC impedance spectroscopy in scanning electrochemical microscopy (SECM). The results show that the corrosion of alloy is neutralized in neutral NaCl solution. With the increase of salinity, the damage of Cl- to the alloy matrix is aggravated. The corrosion potential is positive and the pitting potential is decreased. The electrochemical impedance spectroscopy is only 1 capacitive arc, showing a contraction trend. At the same time, the impedance decreases, the phase angle increases, the dispersion index decreases, and the corrosion resistance of the alloy decreases. The strong activation of Cl- in the solution, will damage the alloy surface oxide film, gradually replacing the OH- in corrosion products of Al (OH)3 and formation of new corrosion products of AlCl3.
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    • References (20)
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