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This is an interesting question. From my point of view, natural corrosion in ambient environment and polarization corrosion have their own benefits. The materials characterized with good corrosion performance would prefer to be tested by polarization, since its natural corrosion process takes a relatively longer time. Another point is, you can choose and control anodic or cathodic branch of corrosion by polarization corrosion. Anodic polarization accelerate the anodic process of corrosion and vise versa. So, you should decide what kind of results you expect, and then choose the corrosion characterization methods. Good luck. |
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