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1- Uniforme corrosion |
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Uniform or general corrosion is the most
classical form of corrosion, but is not always the most important
in terms of cost or safety.
It is characterized by the existence
of several individual electrochemical processes that occur uniformly
over the whole of the surface considered.
The consequences of uniform corrosion are a decrease in metal thickness
per unit time (or a weight loss per unit area per unit time) if
the corrosion products are soluble, or a more or less uniform deposit
of these products if they are insoluble.
Uniform corrosion can be limited or prevented by an appropriate
choice of material, including the use of metallic or organic coatings,
modification of the medium (pH, temperature, concentrations of dissolved
oxygen and electroactive impurities, addition of inhibitors, etc.),
cathodic protection.
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