Galvanic Corrosion Behavior of Copper–Drawn Steel for Grounding Grids in the Acidic Red Soil Simulated Solution
| Autor: | De-Yuan Lin, Junxi Zhang, Yun-Xiang Chen, Xuan-Xuan Liu, Xia Xiaojian, Xiao-Lei Fan |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Scanning electron microscope Metallurgy Metals and Alloys chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Copper Industrial and Manufacturing Engineering Cathode Corrosion Anode law.invention Galvanic corrosion chemistry law 0103 physical sciences Galvanic cell 0210 nano-technology |
| Zdroj: | Acta Metallurgica Sinica (English Letters). 33:1571-1582 |
| ISSN: | 2194-1289 1006-7191 |
| DOI: | 10.1007/s40195-020-01071-7 |
| Popis: | The influence of pH and metallographic structure on the corrosion behavior of copper–drawn steel is studied with the simulated system. The effect of pH on the corrosion behavior of copper–drawn steel has been investigated using open-circuit potential, potentiodynamic polarization, galvanic current measurement, scanning electron microscopy and scanning vibrating electrode technique techniques. The steel is corroded as anode, while the corrosion of copper plate is protected as cathode. All the results revealed that pH and metallographic structure had a significant influence on the corrosion behavior of copper–drawn steel. With the decrease in pH value from 6 to 2.4, the corrosion rate of copper–drawn steel galvanic couple (Cu–Fe GC) obviously increased in the simulated solution of acidic red soil. The electric field formed by the Cu–Fe GC changes the direction of ion migration between the copper and drawn steel electrodes, which impacts the composition and microstructure of corrosion products formed on the electrode surface. |
| Databáze: | OpenAIRE |
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