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| Corrosion Behavior of Typical Grounding Materials in Artificial Alkaline Soil Solution |
GAO Zhiyue( ), JIANG Bo, FAN Zhibin, WANG Xiaoming, LI Xingeng, ZHANG Zhenyue |
| State Grid Shandong Electric Power Research Institute, Ji'nan 250001, China |
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Abstract The corrosion behavior of three metal materials (Q235 steel, galvanized steel and pure copper) in an artificial solution, aiming to simulate the typical alkaline soil solution of Shandong province, was studied by means of electrochemical testing technique, optical metallographic microscope and laser confocal microscope (CLSM). The results show that the corrosion degree of the three metal materials is varied in the simulated alkaline soil solution. The anodic processes of them are all metal dissolution, while the cathodic processes are all oxygen absorption reaction. The corrosion resistance of Q235 steel is the worst. Q235 steel and galvanized steel show the characteristics of uniform corrosion. Pitting occurs on the surface of pure copper. Generally, the corrosion resistance of the three metals may be ranked as follows: pure copper＞galvanized steel＞Q235 steel.
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Received: 07 March 2022
32134.14.1005.4537.2022.061
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| Fund: Science and Technology Project of State Grid Shandong Electric Power Company(52062620004K) |
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