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CAI Jianbin, CAI Zhencai, ZHUANG Jianhuang, LIN Deyuan, CHEN Yunxiang, SHAO Yanqun, ZHENG Yuesheng. Effect of High Voltage Direct Current Electric Field on Corrosion Behavior of 5052 Aluminum Alloy Under Simulated Seawater Cyclic Wet-Dry Condition[J]. Materials and Mechanical Engineering, 2020, 44(3): 18-24,31. DOI: 10.11973/jxgccl202003004
Citation: CAI Jianbin, CAI Zhencai, ZHUANG Jianhuang, LIN Deyuan, CHEN Yunxiang, SHAO Yanqun, ZHENG Yuesheng. Effect of High Voltage Direct Current Electric Field on Corrosion Behavior of 5052 Aluminum Alloy Under Simulated Seawater Cyclic Wet-Dry Condition[J]. Materials and Mechanical Engineering, 2020, 44(3): 18-24,31. DOI: 10.11973/jxgccl202003004
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Effect of High Voltage Direct Current Electric Field on Corrosion Behavior of 5052 Aluminum Alloy Under Simulated Seawater Cyclic Wet-Dry Condition

  • 1. Electric Power Research Institute of State Grid Fujian Electric Power Co., Ltd., Fuzhou 350007, China;

  • 2. Sanming Power Supply Company of State Grid Fujian Electric Power Co., Ltd., Sanming 365000, China;

  • 3. Putian Power Supply Company of State Grid Fujian Electric Power Co., Ltd., Putian 351100, China;

  • 4. College of Materials Science&Engineering, Fuzhou University, Fuzhou 350116, China;

  • 5. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350116, China

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  • Received Date: September 08, 2019
  • Revised Date: February 18, 2020
    Graphical Abstract
    • Abstract
  • The corrosion behavior of 5052 aluminum alloy under simulated seawater (3.5wt% NaCl solution) cyclic wet-dry condition at direct current electric field intensity of 0-400 kV·m-1 was studied. The results show that with the increase of electric field intensity, the mass loss per unit area and corrosion rate of aluminum alloy increased. With the increase of corrosion time, the mass loss per unit area increased, but the corrosion rate decreased. In the early corrosion (0-7 d), the pitting occurred on the surface of aluminum alloy; with the increase of electric field intensity, the pitting was intensified. In the middle stage of corrosion (7-15 d), the exfoliation corrosion occurred; the larger the electric field intensity, the more serious the peeling. In the late stage of corrosion (15-30 d), the passivation, passive film cracking, micro-couple corrosion, exfoliation corrosion alternately occurred.
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    • References (15)
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